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The Fall of FOAM

Fork in Road Disappearance of FOAM blog podcast

The landscape of emergency medicine and critical care (EM/CC) blogs and podcasts has changed dramatically over the past 20 years. The number of free, open-access EM/CC blogs and podcasts has plummeted. As reported by Lin and colleagues in JMIR Education (2022), these sites decreased in number from 183 in 2014 to just 109 this year– a drop of 40.1% [1].

via GIPHY

This comes after a period of rapid growth of these educational resources in the late 2000’s [2], with expectations that new sites would continue to come online. It is unclear when the combined number of EM/CC blogs and podcasts peaked, or how recently it declined.

Why do we care in these declining numbers?

The FOAM (free open-access medical education) movement has become an important component of EM curricula at many training programs. Online learning resources such as medical blogs and podcasts have all but replaced traditional textbooks, and research suggests that some trainees use these products as their primary study materials [3]. Therefore, the observed decrease in FOAM sites is alarming, as training programs and trainees have come to rely on their availability.

Featured paper

In our JMIR Medical Education paper, Lin et al. sought to identify active EM/CC blogs and podcasts during a 2-week period in May 2022. The authors found a total of 50 blogs, 25 podcasts, and 34 blogs + podcasts (n=109). The age of these FOAM sites ranged from 1-18 years and most were physician-led. Just over half had leadership teams of 5 or more individuals. Support was identified for approximately 75% of the sites and included advertisements, institutional sponsorship, or the sale of goods and services (though site access remained free).

The Christensen Theory of Disruptive Innovation may explain the recent decline in EM/CC blogs and podcasts. Using this lens, FOAM sites are considered ‘disruptors’ in medical education that quickly gained market share previously dominated by ‘incumbents’ such as medical textbooks, journals, and in-person conferences. Rather than cede their influence, incumbent organizations co-opted the disruptive innovation itself, in this case leveraging their assets to create their own online learning resources, blogs, and podcasts. As these incumbent offerings grew, there was less need for new, independent FOAM sites. Concurrently, FOAM sites continue to generate little-to-no revenue and academic value for the creators, making it difficult for the disruptors to challenge the market dominance of incumbents or to create its own unique, sustainable market space. We theorize that older sites likely succumbed to these financial and academic opportunity costs as well as high user expectations for design and functionality.

What is the future of FOAM?

Though EM/CC blogs and podcasts changed the landscape of medical education in fundamental ways, they will likely not endure as independent entities without new business models for sustainability. A recent study suggests that the costs of FOAM might be offset by advertising or other revenues [4]. Based on our observations of current practices on existing FOAM sites, this might include at least incorporating any/all of the following:

  1. Inserting advertisements
  2. Creating products for sale such as books, courses, swag, or consulting services
  3. Developing partnerships
  4. Soliciting for donations

In the meantime, we posit one of 3 potential futures of new and existing blogs and podcasts: hybridization, disappearance, and new-market independence.

future of foam christensen

  1. Hybridization strategy: Incumbents partner with or create their own blogs/podcasts. This loss of independence, which was part of the initial appeal of FOAM grassroots efforts, is traded for more stability and infrastructure. Already 44% of EM blogs are officially affiliated with a sponsoring institution.
  2. Continued disappearance of sites: Progressively fewer independent, free blogs/podcasts because of site demise, merging of sites, or conversion to paid subscription model
  3. Independent sustainability: Growth of independent, free blogs/podcasts as its own new-market endeavor, separate from the incumbent market space, only achievable with better return on investments (academically and financially) for bloggers/podcasters. Once FOAM efforts are no longer a major opportunity cost, educators may even be able to pivot their careers towards this primarily, rather than as a side project.

It remains to be seen whether FOAM can withstand market and academic pressures or whether it is destined to be assimilated by better-resourced incumbent organizations.

What is the future of ALiEM?

We hope to stick around and hope the rest of the FOAM community will evolve with us.

Comments?

Join the interesting discussion on Twitter. We are thrilled to bring this conversation to the forefront.

https://twitter.com/M_Lin/status/1582021848958500864?s=20&t=nBcJtrRvgML2QMRNnZkwwA

References

  1. Lin M, Phipps M, Yilmaz Y, Nash CJ, Gisondi MA, Chan TM. A Fork in the Road: Mapping the Paths of Emergency Medicine and Critical Care Blogs and Podcasts. JMIR Medical Education. 2022 (preprint available: https://doi.org/10.2196/39946)
  2. Cadogan M, Thoma B, Chan TM, Lin M. Free Open Access Meducation (FOAM): The rise of emergency medicine and critical care blogs and podcasts (2002-2013). Emerg Med J. 2014;31(e1):e76-e77. doi:10.1136/emermed-2013-203502
  3. Branzetti J, Commissaris C, Croteau C, et al. The Best Laid Plans? A Qualitative Investigation of How Resident Physicians Plan Their Learning [published online ahead of print, 2022 May 24]. Acad Med. 2022; doi:10.1097/ACM.0000000000004751
  4. Lee M, Hamilton D, Chan TM. Cost of free open-access medical education (FOAM): An economic analysis of the top 20 FOAM sites. AEM Educ Train. 2022;6(5):e10795. Published 2022 Sep 9. doi:10.1002/aet2.10795
By |2022-10-18T22:59:19-07:00Oct 19, 2022|Academic, Emergency Medicine, Medical Education, Social Media & Tech|
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PEM POCUS Series: Pediatric Focused Assessment with Sonography for Trauma (FAST)

PEM POCUS fascia iliaca block

Read this tutorial on the use of point of care ultrasonography (POCUS) for Pediatric Focused Assessment with Sonography for Trauma. Then test your skills on the ALiEMU course page to receive your PEM POCUS badge worth 2 hours of ALiEMU course credit.

Module Goals

  1. Summarize the indications and role of the FAST in the evaluation of injured children
  2. Describe the technique for performing the pediatric FAST
  3. Identify anatomical views and landmarks necessary for a complete pediatric FAST
  4. Accurately interpret each pediatric FAST anatomic view and corresponding landmarks
  5. Describe the literature on the pediatric FAST

Case Introduction

You receive an emergency medical services (EMS) notification that they are 2 minutes out from your ED with a 3-year-old boy who fell down a flight of 10 concrete stairs. He is awake and breathing spontaneously but irritable and crying with an obvious deformity to his right arm. EMS placed him in a cervical-collar and are bringing him to your ED.

Vital SignFinding
Temperature37.5oC
Heart Rate158 bpm
Blood Pressure86/48
Respiratory Rate32
Oxygen Saturation98% room air

You conduct your primary assessment:

Trauma AlgorithmAssessment
AirwayPatent: Audibly crying; cervical collar in place
BreathingBilateral breath sounds heard
CirculationSymmetric radial pulses palpable bilaterally; capillary refill 2-3 seconds
DisabilityHis eyes are open, but he is irritable and withdraws to touch (GCS= 13)
ExposureDiffuse superficial abrasions to face and extremities; tenderness and swelling to right forearm; abdomen soft without distension although difficult to appreciate tenderness as patient is crying

You call a trauma consult, connect the patient to the monitor, establish IV access, and reach for your ultrasound probe to perform a FAST.

Trauma remains the leading cause of childhood death and disability in children >1 year of age [1]. While head and thoracic trauma account for most death and disability in children, missed abdominal injuries are a common cause of mortality [2]. Particularly in polytrauma scenarios, it can be difficult for children to locate the exact area of pain and assessing for abdominal injury can be difficult.

FAST is a rapid ultrasound examination of 4 locations (Figure 1) with the primary objective of detecting free fluid within the abdomen, pleural space, and pericardial sac. In injured adults, FAST is useful in rapidly triaging hemodynamically unstable patients to expedite operative management [3]. Free fluid in any one view deems the FAST positive. However, for a FAST to be determined as negative, each of the landmarks in each individual view must be interrogated and evaluated for the presence of free fluid. The role of FAST in the hemodynamically stable child after blunt abdominal trauma is nuanced.

FAST ultrasound probe locations surface anatomy

Figure 1. Location of the 4 FAST views: Right upper quadrant (A), left upper quadrant (B), pelvic (C), subxiphoid (D). Illustration by Dr. Maytal Firnberg.

FAST Technique

The FAST can be performed in parallel with the rest of the trauma evaluation. Serial FAST exams can be repeated as needed throughout the child’s ED stay, particularly if the child has an unexplained change in clinical status. For a complete FAST, each of the views needs to be assessed and every landmark in each view must be visualized. In addition to intra-abdominal hemorrhage and pericardial effusion, point-of-care ultrasound can be used to evaluate the thorax for hemothorax and pneumothorax. When included together, this exam is referred to as the extended FAST (E-FAST).

In general, the child should be positioned supine as free fluid will pool in dependent areas (Figure 2). In children, the recto-vesicular or recto-uterine pouch is the most common place for fluid to collect depending on the patient’s sex [4]. Fluid in the abdomen can move freely up the right pericolic gutter into the right upper quadrant. The left pericolic gutter is higher and the phrenicocolic ligament blocks the flow; consequently, fluid tends to flow to the right pericolic area over the left, regardless of injury type.

Some controversy exists about how much free fluid can be detected by the FAST, and most studies focused on adults. For pediatric patients, we are using 100 mL as it was the median quantity of fluid needed for ultrasound detection of the pelvic view [5].

Free fluid collection areas FAST

Figure 2. Free fluid accumulates in dependent areas. In a supine patient, this is the hepato-renal pouch (right upper quadrant view), the spleno-renal pouch (left upper quadrant view), and recto-vesicular or recto-uterine pouch (pelvic view). Illustration by Dr. Maytal Firnberg.

Use a low frequency ultrasound probe: phased array probe (Figure 3) or curvilinear probe (Figure 4).

    • Phased array probes can generally achieve adequate penetration particularly for smaller pediatric patients and have a smaller footprint allowing for easier intercostal views.
    • Curvilinear probes allow for further penetration and greater depth of abdominal views and may be useful in larger children.

In order to obtain each landmark in the views discussed below, the ultrasound probe will often need to be manipulated in a number of orientations.

probe types

Figure 3 (left): Phased array ultrasound probe; Figure 4 (right): Curvilinear ultrasound probe

For the 4 scanning areas, each view must be interrogated completely, and the clinician should identify all key landmarks. The red dot on the probe correlates with the probe marker.

Right ​​Upper Quadrant (RUQ) View
Probe Placement
RUQ probe placement

Figure 5. Place the probe in the right mid axillary line (around ribs 8-10) with the probe marker towards the head. Fan anterior and posterior and slide up or down a rib space to view the key landmarks.

Normal View and Landmarks
RUQ normal ultrasound view

Figure 6. Normal RUQ ultrasound view with labeled landmarks

  • Diaphragm (including the subdiaphragmatic intraperitoneal space and supradiaphragmatic intrathoracic space)
  • Liver (including the caudal tip of the liver)
  • Kidney (including superior and inferior poles)
  • Hepatorenal Recess (Morison’s Pouch) – A potential space between the liver and kidney where free fluid can collect
Normal Ultrasound Video

Video 1. Normal RUQ ultrasound view
Left ​​Upper Quadrant (LUQ) View
Probe Placement
LUQ probe placement

Figure 7. Place the probe in the left mid or posterior axillary line (around ribs 7-9) with the probe maker towards the head. Fan anterior and posterior and slide up or down a rib space to view the landmarks. In infants and smaller children, the midaxillary line generally provides the best view.

Normal View and Landmarks
Normal LUQ ultrasound view

Figure 8. Normal LUQ ultrasound view with labeled landmarks

  • Diaphragm (including the sub- and supradiaphragmatic areas)
  • Spleen (including splenic tip)
  • Kidney (including superior and inferior poles)
  • Splenorenal Recess – a potential space between the spleen and kidney where free fluid can collect
Normal Ultrasound Video

Video 2. Normal LUQ ultrasound view
Pelvic View
Probe Placement
pelvic probe placement

Figure 9. Place the probe in the midline below the umbilicus and fan or rock the probe down towards the feet until the bladder comes into view. Fan through the entire bladder in both transverse and sagittal orientations. For the transverse and sagittal views, the probe marker should be towards the patient’s right and head, respectively.

Normal View and Landmarks
Normal pelvic ultrasound views

Figure 10. Normal sagittal (left) and transverse (right) views of the pelvic ultrasound with labeled bladder

  • Bladder (including anterior and posterior walls)
    • In patients with uteruses, make sure to visualize the uterus and the recto-uterine space as fluid can collect between the bladder and uterus and also behind the uterus.
Normal Ultrasound Video

Video 3. Normal pelvic ultrasound view (sagittal)

Video 4. Normal pelvic ultrasound view (transverse)
Pericardial View
Probe Placement
pericardial ultrasound probe

Figure 11. Place the probe under the sternum for a subxiphoid view. Point the probe towards the left shoulder and the probe marker towards the right shoulder. This view requires gentle downward pressure as you drop the angle of the probe down towards the patient. If unable to obtain this subxiphoid view, look parasternally.

Normal View and Landmarks
Normal pericardial ultrasound view

Figure 12. Normal pericardial subxiphoid ultrasound view with labeled landmarks

  • Hepatic-pericardial interface
  • Left and right ventricles (atria may also be visible)
  • Pericardial space
Normal Ultrasound Video

Video 5. Normal pericardial ultrasound view (no pericardial effusion and normal contractility)

Overarching Goal

The aim of the FAST is to identify free fluid in the abdomen, pelvis, pleural, and pericardial spaces.

Free fluid will appear anechoic (black) and will pool in dependent, unobstructed areas. On the right side, fluid in the abdomen can move freely up the pericolic gutter into the right upper quadrant. On the left, the pericolic gutter is higher and the phrenicocolic ligament may impede its flow. The RUQ view is the most sensitive view in adults while the pelvic view is the most sensitive view in children [4]. The following are examples of free fluid identified within the various views of the FAST scan.

free fluid ultrasound labelled

Figure 13. RUQ ultrasound view demonstrating free fluid in Morrison’s pouch in an unlabelled (A) and labelled (B) image

Abnormal RUQ Views

RUQ Free Fluid ultrasound

Figures 14 (left) and 15 (right). Abnormal RUQ ultrasound views with free fluid. Note that the right image demonstrates free fluid both above and below the diaphragm, meaning fluid that is in the peritoneal and pleural cavities, respectively.

Video 6. Abnormal RUQ ultrasound view with free fluid in the pleural space and Morison’s pouch

Abnormal LUQ Views

Tip: In the LUQ view, the free fluid tends to collect just under the diaphragm. Be sure to look at the diaphragm-spleen interface.

LUQ free fluid ultrasound

Figure 16. Abnormal LUQ view with free fluid below the diaphragm and above the spleen

Video 7. Abnormal LUQ ultrasound view with free fluid under the diaphragm

Abnormal Pelvic Views

Tip: Free fluid can collect between the bladder and colon in male patients. In female patients, fluid can collect between the bladder and uterus or between the uterus and colon.

pelvic free fluid ultrasound

Figure 17. Abnormal pelvic view showing free fluid between the bladder and colon

Video 8. Abnormal pelvic ultrasound on sagittal view showing free fluid

Abnormal Pericardial Views

abnormal pericardial FF ultrasound

Figure 18. Abnormal pericardial view showing pericardial free fluid

Video 9. Abnormal pericardial ultrasound view showing free fluid

ArtifactUltrasound Image
Mirror Artifact

These artifacts are cast above the diaphragm in the RUQ and LUQ views.

ultrasound spine sign artifact

Figure 19. The RUQ view shows liver parenchyma architecture cephalad of the diaphragm as a mirror artifact.

Spine Sign

The spine is not typically seen cephalad to the diaphragm by ultrasound due to air artifact. If the spine is visualized above the diaphragm, this indicates the lungs are no longer filled with air, which normally causes the refraction/reflection of ultrasound waves. This occurs in instances where air is replaced by fluid, such as a pleural effusion or hemothorax, or by a dense consolidation or contusion.

Figure 20. A – The spine is not visualized cephalad to the diaphragm in a normal RUQ ultrasound view. B – A pleural effusion results in a “spine sign” where the spine can be seen extended beyond the diaphragm.

Posterior Acoustic Enhancement

Since the bladder is a fluid filled structure which transmits ultrasound waves well, the waves illuminate the posterior wall of the bladder in a phenomenon called posterior acoustic enhancement. This brightness can hide free fluid settled in the pelvis. Thus, decrease the far field gain (brightness) behind the bladder to avoid missing obscured free fluid.

posterior acoustic enhancement

Figure 21. Bladder view with posterior acoustic enhancement artifact

Old Blood

As blood pools, the ultrasound appearance of clotted blood may have similar echotexture to surrounding soft tissue or organs rather than appear anechoic (black) as typical free fluid.

clotted blood artifact

Figure 22. Bladder view showing hypoechoic clotted blood that may be confused as soft tissue

Edge Artifact

Due to ultrasound physics and sound wave transmission between structures of different densities, edge artifacts are seen as a dark thin line tracing off the edge of this interface extending to the bottom of the screen. It can be misinterpreted as free fluid.

edge artifact ultrasound

Figure 23. RUQ view with an edge artifact

Stomach Sabotage

A full stomach will appear as a rounded collection of fluid and air anterior to the spleen. It may mimic a free fluid collection. Fan posterior of the stomach to visualize the spleen and perisplenic spaces.

Stomach sabotage artifact

Figure 24. The stomach obscures the LUQ view. Note the mix of bright (air) and dark (other gastric contents) inside the stomach.

Seminal Vesicles

Seminal vesicles can appear as hypoechoic, contained, symmetric structures posterior to the bladder in the transverse view and can be mistaken for free fluid.

Seminal vesicle artifact

Figure 25. Bladder view showing hypoechoic seminal vesicles  posterior to the bladder

  • The FAST evaluates for the presence free fluid only [6].
    • In trauma, the assumption is that free fluid is due to hemorrhage; however, the FAST cannot adequately distinguish between blood and other types of free fluid, such as ascites or physiologic free fluid.
    • It does not directly evaluate for injury to solid organs, bowel, diaphragm, or retroperitoneum​.
  • In isolation, the FAST cannot rule out intra-abdominal injury [7].
  • The FAST can not detect tiny amounts of hemorrhage.
    • The scan may appear initially negative with a free fluid volume under a threshold of about 100 mL [5].
    • Repeat FAST scans may help detect an accumulation of fluid over time throughout a child’s evaluation.
  • Trace pelvic free fluid may be physiologic in children, thus limiting specificity [8].

For adults, the FAST is integral in the diagnostic evaluation after blunt and penetrating trauma [9]. It improves outcomesby decreasing the time to surgical intervention, patient length of stay, surgical complications, CT scan, and diagnostic peritoneal lavage rates [3].

For children, however, the literature is less clear cut. Pediatric injury patterns commonly result in solid organ lacerations without hemoperitoneum, making the FAST a less sensitive means for detecting important intra-abdominal injury [7]. Further, the test characteristics of the FAST have variable reliability and accuracy in children [7,10,11]. This variation contributes to uncertainty of how to use results of the FAST and decreases its impact on potentially important clinical outcomes such as rates of CT scans and ED length of stay [12]. However…

  • The FAST is able to identify injuries that the physical exam can miss. When combined with the physical exam, the FAST scan has been found to have better test characteristics than the physical exam alone [13].
  • The improvement in POCUS technology, widespread pediatric-specific POCUS expertise, and a focus on clinically relevant outcomes have allowed clinicians to integrate the FAST into novel diagnostic strategies for children after blunt torso trauma [14].
  • The pediatric FAST may be used in combination with signs, symptoms, and other diagnostic testing as a screening algorithm to decrease unnecessary CTs. Investigators will need to conduct larger validation trials to confirm and clarify the algorithm.

Studies that have shaped the pediatric FAST literature landscape:

StudyStudy Type, Location (Time Frame)N, AgesNotes
Menaker et al., J Trauma Acute Care Surg 2014 [7]

Secondary Analysis of a Prospective Observational Study

Multicenter (May 2007 to January 2010)

6,468

Median age, 11.8 yrs; interquartile range (IQR) 6.3-15.5 yrs

  • Evaluated the variability of clinician-performed FAST examinations and the use of abdominal CT following FAST examination in children with blunt trauma
  • 373 (5.8%) were diagnosed with intra-abdominal injury
  • 3,015 (46.6%) underwent abdominal CT scanning. Only 887 (13.7%) underwent FAST examination before CT scan.
  • Use of the FAST increased as clinician suspicion for intra-abdominal injury increased. When clinicians had a lower suspicion, they were significantly less likely to order a CT scan, if a FAST examination was performed.
Holmes et al., JAMA 2017 [12]

Randomized Clinical Trial

University of California, Davis Medical Center (April 2012-May 2015)

925

Mean 9.7 yrs; SD 5.3 yrs

  • Studied the impact of the FAST scan on on multiple patient centered outcomes
  • Hemodynamically stable patients with blunt torso trauma were randomized a FAST or no FAST scan.
  • 50 had intra-abdominal injury, including 40 patients (80%) with intraperitoneal fluid and 9 patients underwent laparotomy.
  • No difference in the proportion obtaining CT, missed intra-abdominal injuries, length of stay, or cost.
Kornblith et al., Acad Emerg Med 2020 [13]

Retrospective Review

University of California, Benioff Children’s Hospital Oakland (November 2013 to July 2015)

354

Median age 8 yr; IQR 4-12 yr

  • Query of trauma database for children who met institutional trauma activation criteria and who also had a FAST performed.
  • 50 (14%) patients were found to have an intra-abdominal injury with 13 (4%) requiring intervention.
  • Positive FAST and positive physical exam were found to be independent predictors of intra-abdominal injury, both with a 74% sensitivity.
  • When combined, FAST and physical exam (FAST-enhanced physical exam) improved sensitivity to 88% (NPV 97.3%).
Liang et al., Pediatr. Emerg Care 2021 [11]

Systematic Review and Meta-Analysis

Multicenter (January 1966- March 2018)

2,135

Study dependent

  • Based on 8 studies, the FAST had a pooled sensitivity of 35% and specificity 96% for intra-abdomianal injury.
  • All 8 studies were prospective; 1 of the 8 was the 2017 Holmes paper mentioned above [12].
  • Conclusion: For a positive FAST, the post-test probability of an intra-abdominal injury was 63% meaning that those patients should get a CT to characterize injury. If the FAST is negative, you may still need a CT, because the post-test probability of intra-abdominal injury was still relatively high at 9%.
  • None of the studies had low enough negative likelihood ratios to obviate the need for CT.
  • Although a negative FAST alone does not exclude an intra-abdominal injury, it can identify low-risk patients with a reassuring physical exam and GCS 14-15.
Kornblith et al., JAMA 2022 [15]

Expert, consensus–based Modified Delphi

International multicenter (May 2021 to June 2021)

n/a
  • Generated definitions for complete pediatric FAST and E-FAST studies in the context of blunt trauma

Future Directions

The use of FAST in pediatric trauma is an evolving area of active research. A clear consensus on the way the FAST fits into pediatric trauma protocols is yet to be determined. Studies will need to be performed to examine the benefits of serial FAST, patient factors that may influence its test characteristics, and effect on patient centered outcomes.

There are a number of strategies to incorporate the above studies into clinical care, and one example is illustrated in the algorithm below. Keep in mind that FAST should be used in conjunction with other signs and symptoms of intra-abdominal injury (vomiting, decrease breath sounds, abdominal pain, thoracic wall trauma). Also consider laboratory testing such as liver function tests and urinalysis, depending on the clinical context and consulting your surgical colleagues.

Sample Algorithm for Pediatric Blunt Torso Trauma

Zuckerberg San Francisco General Pediatric Blunt Torso Trauma Algorithm (shared with permission)

Case Resolution

The primary survey is completed with airway, breathing, and circulation noted to be intact. As someone starts the secondary survey, you grab a phased array probe and perform a FAST . You observe the following:

RUQ View

LUQ View

Pelvis View, Sagittal

Pelvis View, Transverse

Pericardial View

You call out ‘FAST negative’ to the documenting nurse and team leader.

ED Course

The patient has radiographs performed of his chest, pelvis, neck, and right forearm. He is diagnosed with a type 3 supracondylar humeral fracture but the other radiographs are negative for fracture and pneumothorax. The rest of his evaluation is reassuring. Orthopedics is consulted and they admit him for surgery. He is discharged home the next day with pediatrician follow up.

Pediatrician Clinic Follow-Up

At her pediatrician clinic visit 1 week later, he is playful and active with his arm in a cast. He has been eating and drinking normally without any complaints of abdominal pain. He has orthopedics follow up scheduled for the following week.

Learn More…

References

  1. Leading Causes of Death by Age Group United States 2018. Centers for Disease Control and Prevention. Accessed September 28, 2022
  2. Kenefake ME, Swarm M, Walthall J. Nuances in Pediatric Trauma. Emerg Med Clin North Am. 2013;31(3):627-652. doi:10.1016/j.emc.2013.04.004
  3. Melniker LA, Leibner E, McKenney MG, Lopez P, Briggs WM, Mancuso CA. Randomized controlled clinical trial of point-of-care, limited ultrasonography for trauma in the emergency department: the first sonography outcomes assessment program trial. Ann Emerg Med. 2006;48(3):227-235. doi:10.1016/j.annemergmed.2006.01.008
  4. Brenkert TE, Adams C, Vieira RL, Rempell RG. Peritoneal fluid localization on FAST examination in the pediatric trauma patient. Am J Emerg Med. 2017;35(10):1497-1499. doi:10.1016/j.ajem.2017.04.025
  5. Jehle DVK, Stiller G, Wagner D. Sensitivity in Detecting Free Intraperitoneal Fluid With the Pelvic Views of the FAST Exam.
  6. Netherton S, Milenkovic V, Taylor M, Davis PJ. Diagnostic accuracy of eFAST in the trauma patient: a systematic review and meta-analysis. CJEM. 2019;21(6):727-738. doi:10.1017/cem.2019.381
  7. Menaker J, Blumberg S, Wisner DH, et al. Use of the focused assessment with sonography for trauma (FAST) examination and its impact on abdominal computed tomography use in hemodynamically stable children with blunt torso trauma. J Trauma Acute Care Surg. 2014;77(3):427-432. doi:10.1097/TA.0000000000000296
  8. Berona K, Kang T, Rose E. Pelvic Free Fluid in Asymptomatic Pediatric Blunt Abdominal Trauma Patients: A Case Series and Review of the Literature. J Emerg Med. 2016;50(5):753-758. doi:10.1016/j.jemermed.2016.01.003
  9. Bloom BA, Gibbons RC. Focused Assessment with Sonography for Trauma. In: StatPearls. StatPearls Publishing; 2021. Accessed November 14, 2021.
  10. Holmes JF, Gladman A, Chang CH. Performance of abdominal ultrasonography in pediatric blunt trauma patients: a meta-analysis. J Pediatr Surg. 2007;42(9):1588-1594. doi:10.1016/j.jpedsurg.2007.04.023
  11. Liang T, Roseman E, Gao M, Sinert R. The Utility of the Focused Assessment With Sonography in Trauma Examination in Pediatric Blunt Abdominal Trauma: A Systematic Review and Meta-Analysis. Pediatr Emerg Care. 2021;37(2):108-118. doi:10.1097/PEC.0000000000001755
  12. Holmes JF, Kelley KM, Wootton-Gorges SL, et al. Effect of Abdominal Ultrasound on Clinical Care, Outcomes, and Resource Use Among Children With Blunt Torso Trauma: A Randomized Clinical Trial. JAMA. 2017;317(22):2290-2296. doi:10.1001/jama.2017.6322
  13. Kornblith AE, Graf J, Addo N, et al. The Utility of Focused Assessment With Sonography for Trauma Enhanced Physical Examination in Children With Blunt Torso Trauma. Acad Emerg Med Off J Soc Acad Emerg Med. 2020;27(9):866-875. doi:10.1111/acem.13959
  14. Riera A, Hayward H, Torres Silva C, Chen L. Reevaluation of FAST Sensitivity in Pediatric Blunt Abdominal Trauma Patients: Should We Redefine the Qualitative Threshold for Significant Hemoperitoneum? Pediatr Emerg Care. 2021;37(12):e1012. doi:10.1097/PEC.0000000000001877
  15. Kornblith AE, Addo N, Plasencia M, et al. Development of a Consensus-Based Definition of Focused Assessment With Sonography for Trauma in Children. JAMA Netw Open. 2022;5(3):e222922. Published 2022 Mar 1. doi:10.1001/jamanetworkopen.2022.2922
By |2022-10-12T10:48:28-07:00Oct 7, 2022|Expert Peer Reviewed (Clinical), Pediatrics, PEM POCUS, Radiology, Ultrasound|
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IDEA Series: Ultrasound-capable, 3D-printed central line trainer

Problem: Central venous line (CVL) placement is a key skill for emergency medicine providers. Sites for central line placement include the internal jugular vein, subclavian vein, and femoral vein. Indications include, but are not limited to fluid resuscitation, medication administration, central venous pressure monitoring, pulmonary artery catheter introduction, and transvenous pacing wire placement. Procedural complications can include catheter-associated infection and arterial puncture. Success rates for CVL placement vary based on location and provider experience [1-3]. Point-of-Care Ultrasound (POCUS) increases both success rate and patient safety when used to guide CVL placement [4].

central line trainer 3d idea

Figure 1. Setup for ultrasound-capable, 3D-printed central line trainer

The Innovation

The ultrasound-capable, 3D-printed central line trainer was created to facilitate realistic training of POCUS-guided CVL placement, specifically utilizing the internal jugular vein. The trainer uses a ballistic gel insert that is ultrasound-capable and replaceable, as needed.

The Learners

The model can be utilized by anyone needing practice and training on central line placement. This includes medical and physician assistant students, residents, and fellows. It will be particularly useful with students familiar with POCUS basics.

Group Size

In our experience, 4-5 students were able to utilize the model before the wear from repeated use began to impact the imaging and structure of the model, necessitating replacement of the insert. The dilation step of the Seldinger technique can be skipped or simulated in order to prolong the life of the gel insert.

Equipment

Description of the Innovation

  • The initial head model was designed using 2 common 3D modeling software systems: Tinkercad and  Meshmixer
  • A generic head and neck model was imported into Meshmixer. Using the available tools in Meshmixer, the head was rotated to the side and the neck was manipulated to enhance the appearance of an extended neck with close attention to the sternocleidomastoid muscle and clavicle.
  • The model was then imported into Tinkercad and a section of the neck was removed, inverted, and manipulated inside of a box to create a negative (mold).

central line trainer tinkercad

Figure 2. Screenshot of head being edited in Tinkercad software

central line trainer tinkercad neck

Figure 3. Screenshot of neck mold being edited in Tinkercad software

  • The head was printed with Polylactic acid (PLA) filament in 2 sections that were then glued together with superglue. The seam was sealed and smoothed with latex caulk. The files for both the head and the mold can be found in this Google Drive folder.
  • A hole was drilled from the base of the neck through the top of the head. A second hole was drilled in the base of the model.
  • To make a suitable tray for the ballistic gel insert, a thin plate was printed and then cut to fit the shape of the neck. Finally, that piece was glued to the bottom of the model.
  • The model was painted using matte spray paint.

central line trainer spray paint

Figure 4. Use of matte spray paint to paint the model

  • The mold was printed next. Two holes were drilled on either side to allow for insertion of latex tubing.
  • The ballistic gel was heated according to the directions on the box. The gel can be colored using dye or acrylic paint. Caution should be practiced when using acrylic paint. The heated gel can foam up, increasing the possibility of injury from burn.
  • While the gel was heating, the mold was prepared. The bottom was coated with a thin layer of dish soap to assist with gel release. Two sections of latex tubing, approximately 2 feet each were inserted into the mold. Modeling clay was used to fill the gaps.
  • Once colored and thoroughly heated, the gel was poured into the mold.

central line trainer mold internal jugular vein

Figure 5. Preparation of the mold in which the heated gel will be poured

central line trainer mold pour

Figure 6. The heated, colored gel is poured into the mold

  • After curing, the latex tubes were removed. The gel neck model was then removed and placed into the accompanying space on the 3d printed trainer.
  • The latex tubing was fished back through the available holes, and filled with water. As an optional step, a 30 cc syringe was attached to one end of the thicker tube. Tube stoppers can also be printed and used in place of hemostats. Pumping the syringe plunger simulates the appearance of arterial flow on ultrasound.

Video Demonstration of Final Product

Lessons learned

We are currently investigating how best to research this model. The model is inexpensive compared to available commercial CVL trainers. We estimate the cost at approximately $80 per model in materials. This, of course, does not include the price of a 3d printer, 18v drill, or drill bit. Two comparable models available for purchase are both listed for over $1000 [5, 6]. The build time is approximately 1 week with time spent printing, glue-drying, and ballistic gel setting. The model can be used repeatedly and the insert remade many times over.

If another model were to be designed, the top of the head could be sacrificed in favor of an elongated neck section. The top of the head provides no value and consumes 3d printing filament. Furthermore, an elongated neck may be preferable for a new learner by allowing more room to practice probe and hand placement.

Theory behind the innovation

Simulation as a means of teaching has been a firmly established practice across the landscape of medical education. The model in question is high-fidelity and offers the user a realistic experience in a low-stress environment. The model is small enough to be portable and can be used with little preparation, making it an ideal tool for just-in-time training in the emergency department.

Tools that allow the learner to practice multiple steps of a skill during one exercise are invaluable for skill development, competency-based medical education and mastery learning.

Idea Series Logo debriefing

Led by series editor, Dr. Mary Haas, the IDEA series showcases examples of what programs worldwide have been doing to make residency conference more entertaining, engaging, and most of all, educational for residents. Read more publications from the series.

References

  1. McGee DC, Gould MK. Preventing complications of central venous catheterization. New England Journal of Medicine. 2003;348(12):1123-1133. doi:10.1056/nejmra011883
  2. Schummer W, Köditz JA, Schelenz C, Reinhart K, Sakka SG. Pre-procedure ultrasound increases the success and safety of central venous catheterization. British Journal of Anaesthesia. 2014;113(1):122-129. doi:10.1093/bja/aeu049
  3. E Portalatin M, Fakhoury E, Brancato R, et al. Factors contributing to unsuccessful central line placement in the neck and chest. Surgery: Current Trends and Innovations. 2019;3(2):1-5. doi:10.24966/scti-7284/100015
  4. Saugel B, Scheeren TWL, Teboul J-L. Ultrasound-guided central venous catheter placement: A Structured Review and recommendations for Clinical Practice – Critical Care. BioMed Central. Published August 28, 2017. Accessed September 21, 2022.
  5. Life/form Central Venous Cannulation Simulator. Universal Medical. . Accessed September 21, 2022.
  6. Blue Phantom internal jugular Central Line Ultrasound manikin. 3012495 – Blue Phantom – BPP-060 – Ultrasound Trainers. Accessed September 21, 2022.
By |2022-09-26T01:52:50-07:00Sep 30, 2022|IDEA series, Medical Education, Ultrasound|
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PEM Pearls: An Approach to Infant Apnea

infant

A 2-day-old female born at 41 weeks presents to the Emergency Department (ED) for an episode of apnea. Her parents noticed she stopped breathing, went limp, and turned blue. They are not sure for how long. The infant has had decreased urine output but is otherwise well without any other symptoms. Mom has an unspecified autoimmune condition and is taking hydroxychloroquine. The pregnancy and birth were largely uneventful. Mom was positive for Group B. Strep, had prolonged rupture of membranes, and was appropriately treated with antibiotics.

Vitals: The infant’s vital signs in the ED are within normal limits except for mild tachypnea.

Initial Exam: Her exam is nonfocal.

Background

Apnea among infants occurs when an infant stops breathing for 20 seconds or longer or stops breathing, for any amount of time, with bradycardia, cyanosis, pallor, and/or hypotonia. The overall incidence of apnea is 1 in 1,000 full-term infants. Infants who are premature (<37 weeks) are at increased risk for apnea; the incidence is almost 100% in infants born less than 28 weeks. Apnea is more common in premature infants due to their immature respiratory systems and physiologic stressors often manifest as respiratory depression in infants [1].

For infants that are actively apneic, the approach is similar to any pediatric resuscitation: ABCs (see ED approach below for management). 

For infants who had an apneic episode that has since resolved, one has more time to think about the differential. 

Differential Diagnosis

Apnea can be benign and physiologic, typically lasting between 5-10 seconds and more often occurring between 2 weeks to 6 months of life. Because physiologic stressors can manifest as respiratory depression in infants, the differential for pathologic apnea is broad. The following are broad categories to consider (similar to “the misfits” mnemonic for the crashing neonate).

  1. Sepsis: UTI, pneumonia, necrotizing enterocolitis, meningitis/encephalitis 
  2. Pulmonary disease: pneumonia, pneumothorax, viral illness  
  3. Congenital heart disease 
  4. Metabolic disease: glucose, inborn errors of metabolism, electrolytes 
  5. Intracranial abnormalities
  6. Non-accidental trauma 
  7. Toxins: carbon monoxide, botulism, maternal opioid use 

It’s important to note that apnea in infants may qualify as a BRUE (brief, resolved, unexplained event). However, in this case, the infant is less than 60 days old. This is NEVER a low-risk BRUE [2]. 

Approach for the ED Provider

For the emergency provider, considering all of this can be overwhelming. Our job is to collect pertinent data, stabilize the infant, and start empiric treatment in order for the inpatient teams to further investigate the exact cause of the apnea. The following is a simplified ED approach: 

Key history questions:

  1. How was the delivery: Was meconium present? Was there prolonged rupture of membranes? 
  2. How was the pregnancy: Did mom get prenatal care? Were there any abnormal results with prenatal testing? What are mom’s medical conditions? Did mom get any treatment during her pregnancy (e.g. PCN for syphilis)?
  3. How is the infant feeding, stooling, and urinating? Are there any other symptoms? 

Key workup to initiate (in bold are items we wouldn’t typically send for adult workups and may be forgotten by ED providers who do not primarily care for children):

  1. VBG, CBC, CMP, ammonia (for metabolic conditions), blood culture, urinalysis, lumbar puncture (if concerned about sepsis)
  2. Respiratory viral panel, pertussis (if endemic and/or area with low vaccination rates)
  3. ECG, chest X-ray (if hypoxic or abnormal clinical exam)
  4. Pre and post-ductal oxygen saturation and four-point blood pressure (for heart disease, primarily coarctation of the Aorta)

Key physical exam findings (undress the patient fully):

  1. Are there bruises or other signs of abuse? 
  2. What is the fontanelle size? How do the pupils appear?
  3. Is there wheezing, rhonchi, or rales on lung auscultation? Are breath sounds equal? Is there increased work of breathing?
  4. Is there abdominal distension or guarding?
  5. Are there rashes? Is there edema in the extremities?

Management for infants currently apneic: ABCs.

  1. Establish access, connect to monitors, and get a full set of vitals (including rectal temperature).
  2. Support the airway. Start with oxygenation and ventilation. Utilize noninvasive pressure ventilation with continuous positive airway pressure (CPAP) or High Flow Nasal Canula (HFNC). Consider intubation if there is no improvement, however, do not jump immediately to intubation as an infant’s respiratory status can quickly change with respiratory support. 
  3. Start CPR if there is no pulse or the pulse is less than 60 beats per minute.
  4. Begin intravenous fluids at 10-20ml/kg (be careful if you have concerns about heart failure). 
  5. Obtain a point of care glucose (and if available, venous blood gas). Consider naloxone if opioid ingestion is possible.

Management for the infants who are not currently apneic: 

  1. Monitor vital signs and support respiration as needed (e.g. nasal cannula, CPAP).
  2. Give empiric antibiotics if there is a concern for sepsis. Remember, avoid ceftriaxone in neonates less than 28 days due to concern for kernicterus. Instead, use ampicillin and gentamicin. Add vancomycin if concerned about MRSA.
  3. Nutritional support – remember that infants have low glucose stores. Start maintenance fluids (D10W (if <28 days) or D5NS +/- KCl).
  4. The NICU may want you to start caffeine and/or theophylline in the ED for treatment for apnea of prematurity.

Disposition is mainly to the Neonatal Intensive Care Unit (NICU).

Case Resolution

While in the ED, the infant desaturates to the 80s with improvement on HFNC. She has a full sepsis workup and is started on empiric antibiotics (ampicillin/gentamicin) and antivirals (acyclovir). The infant is found to have hypoglycemia and metabolic acidosis. Her neurologic, cardiac, and infectious workups are unremarkable and she doesn’t have any apneic/cyanotic episodes while hospitalized. She is discharged home with suspected hypoglycemia from poor feeding as the cause.

Conclusion

  • The workup for apnea in infants is broad and not limited to pulmonary pathology.
  • Remember your ABCs, ask key history questions (prenatal, intrapartum, postpartum), send key diagnostics (including ammonia and pertussis), and collect key physical exam findings (including pre and post-ductal saturation and four-point blood pressure).
  • Call your NICU team early.
  • You will likely not arrive at the cause of the apnea in the ED, but your early workup and empiric treatment (e.g. CPAP, antibiotics) are critical in caring for these infants.

Read more pediatric emergency medicine topics as part of the PEM Pearls Series on ALiEM.

References

  1. Kondamudi NP, Khetarpal S. Apnea In Children. [Updated 2022 Jul 18]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. https://www.ncbi.nlm.nih.gov/books/NBK441894/ .Accessed September 21, 2022.
  2. Tieder JS, Bonkowsky JL, Etzel RA, et al. Brief Resolved Unexplained Events (Formerly Apparent Life-Threatening Events) and Evaluation of Lower-Risk Infants [published correction appears in Pediatrics. 2016 Aug;138(2):]. Pediatrics. 2016;137(5):e20160590. PMID 27244835 

Read more pediatric emergency medicine topics as part of the PEM Pearls Series on ALiEM.

By |2022-09-21T15:16:27-07:00Sep 26, 2022|Pediatrics, PEM Pearls|
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SAEM Clinical Images Series: My Eye is Swollen

eye

A 56-year-old male presented to the Emergency Department with a chief complaint of painful eyelid swelling and itching upon waking up. He reported no history of trauma or fever. He had one similar episode in the past which was self-limiting. The patient denied vision loss, diplopia, pain with extraocular movement, and ophthalmoplegia.

 

Vitals: T 37.4°C; BP 129/73; HR 91; RR 16

General: A/O x 3; well nourished in NAD

HEENT:  Extraocular movements intact in both eyes. Pupils are equal, round, and reactive to light and accommodation bilaterally. Visual Acuity: OD 20/20, OS 20/25.

Left eye: Diffuse swelling and erythema to the left upper and medial lower eyelids with minimal purulent discharge from the lacrimal puncta. Tenderness localized to the medial canthal region.

Right eye: Normal.

Complete blood count (CBC): within normal limits

Comprehensive metabolic panel (CMP): within normal limits

Acute dacryocystitis. Dacryocystitis is defined by inflammation or infection of the nasolacrimal sac. Whether acute or chronic, acquired or congenital, inflammation is caused by obstruction of the nasolacrimal duct usually from infection, trauma, or a space-occupying lesion. The most common infectious organisms are Staphylococcus and beta-hemolytic streptococcus species. The classic clinical presentation is a sudden onset of swelling, erythema, and tenderness in the medial part of the orbit. Conjunctival injection and swelling around the entire orbit can suggest the development of preseptal cellulitis. Complications of dacryocystitis include orbital abscess, orbital cellulitis, vision loss, ophthalmoplegia, and eyelid necrosis. The differential diagnosis includes dacryoadenitis, lacrimal sac or sinonasal tumor, ethmoid sinusitis, and infected sebaceous or dermoid cyst.

Treatment for dacryocystitis depends on the severity and clinical manifestations of the disease. In mild cases, symptoms will resolve with the application of warm compresses, lacrimal sac massage (Crigler technique), and topical antibiotics if indicated. Severe cases may require oral or parenteral antibiotics and surgical decompression.

Take-Home Points

  • Dacryocystitis is inflammation of the medial nasolacrimal sac preceded by obstruction and may be acute or chronic, congenital or acquired.
  • Dacryocystitis exhibits a bimodal age distribution. The common congenital form is found in infancy, and in adulthood at age of 40 years older.
  • Dacryocystitis is occasionally mistaken for dacryoadenitis (inflammation of the nasolacrimal gland with superolateral eyelid edema). Far less common, dacryoadenitis is associated with systemic inflammatory conditions such as malignancy, Sjogren syndrome, sarcoidosis, Crohn’s disease, and other autoimmune diseases.
  • Proper recognition and prompt treatment may prevent serious complications including orbital cellulitis, vision loss, and sepsis.

  • Alsalamah AK, Alkatan HM, Al-Faky YH. Acute dacryocystitis complicated by orbital cellulitis and loss of vision: A case report and review of the literature. Int J Surg Case Rep. 2018;50:130-134. doi: 10.1016/j.ijscr.2018.07.045. Epub 2018 Aug 9. PMID: 30118963; PMCID: PMC6098209.
  • Carlisle RT, Digiovanni J. Differential Diagnosis of the Swollen Red Eyelid. Am Fam Physician. 2015 Jul 15;92(2):106-12. PMID: 26176369.

Copyright

Images and cases from the Society of Academic Emergency Medicine (SAEM) Clinical Images Exhibit at the 2021 SAEM Annual Meeting | Copyrighted by SAEM 2021 – all rights reserved. View other cases from this Clinical Image Series on ALiEM.

By |2022-09-11T10:08:30-07:00Sep 19, 2022|HEENT, SAEM Clinical Images|
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SAEM Clinical Images Series: Unilateral Facial Pain

swelling

A 78-year-old male with a past medical history of Lewy body dementia, hypertension on bisoprolol, hypothyroidism, COPD, chronic lower extremity edema on furosemide, and overactive bladder on oxybutynin presented to the emergency department for evaluation of three days of progressively worsening left-sided neck and facial swelling. Associated symptoms included poor oral intake, a nonproductive cough, and one week of sore throat.

The black arrow represents the left parotid gland.

Vitals: Afebrile; normal room air saturation

HEENT: Firm, tender, warm and erythematous swelling over the left mandibular ramus that extended to the cheek, left neck, and spread caudally into the supraclavicular region and anterior chest. There were no identifiable hard masses or areas of fluctuance. Further inspection of the oral cavity revealed dry mucous membranes, poor dental hygiene without identifiable dental abscess, tonsils were normal size and equal bilaterally, and uvula was midline. Direct pressure externally over the area of concern revealed purulent discharge from Stenson’s duct.

White blood cell (WBC) count: 22.15

Comprehensive metabolic panel (CMP): Na 131; BUN 39; Cr 3.3

Lactic acid: 2.9

Acute suppurative parotitis (ASP) is a serious bacterial infection of the parotid gland that occurs in patients with diminished salivary flow, increased susceptibility to infection, and poor oral hygiene. Our patient had multiple risk factors for this disease which can include dehydration, advanced age, sialolithiasis, medications (diuretics, beta-blockers, antihistamines, phenothiazines, tricyclic antidepressants, anticholinergics), and certain disorders including diabetes, HIV, hypothyroidism, Sjogren’s syndrome. The most common organisms responsible for ASP are Staphylococcus aureus and oral flora anaerobes.

The most feared complications include supraglottitis, cervical necrotizing fasciitis, and other deep neck space infections which can be surgical emergencies and rarely cause impending airway obstruction. Further central and vascular complications include brain abscess, central venous thrombosis, and Lemierre’s syndrome

Take-Home Points

  • The role of bedside ultrasound in acute suppurative parotitis can help to rule out a superficial abscess or sialolithiasis. CT scan is beneficial in ruling out deep space infections as a complication from this disease process or other causes of head and neck swelling.
  • ASP-associated complications are rare but can lead to significant morbidity and mortality secondary to the parotid gland’s proximity to vital structures and ability to spread to adjacent deep spaces.
  • Emergency medicine physicians will manage acute suppurative parotitis and must be aware of the potential complications when determining safe disposition and appropriate treatment.

  • Markovich A, Ronen O. Factors predicting length of stay in patients hospitalized for acute parotitis. J Investig Med. 2021 Feb;69(2):388-392. doi: 10.1136/jim-2020-001506. Epub 2020 Oct 21. PMID: 33087427.

Copyright

Images and cases from the Society of Academic Emergency Medicine (SAEM) Clinical Images Exhibit at the 2021 SAEM Annual Meeting | Copyrighted by SAEM 2021 – all rights reserved. View other cases from this Clinical Image Series on ALiEM.

By |2022-09-11T10:03:16-07:00Sep 12, 2022|HEENT, SAEM Clinical Images|
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Trick of the Trade: Winging It with External Jugular Cannulation

external jugular

Sankoff J, et al. WJEM (2008)

Imagine yourself caring for a patient that needs urgent vascular access, but several attempts at peripheral intravenous (IV) cannulation have been unsuccessful. You aren’t quite at the point where emergent intraosseous or central venous access is indicated. Maybe those options aren’t even available where you’re working. From across the room, though, you can see a very prominent external jugular (EJ) vein. Sadly, you remember the last EJ line you placed falling out almost immediately.

Patients with challenging peripheral intravenous access in the extremities may require and benefit from cannulation of the EJ. Often done in the setting of resuscitation, securing these angiocatheters on the neck can be difficult. Tape and dressings may not stick due to sweat and anatomical limitations. Rotation, flexion, and extension of the neck can displace the catheter.

Trick of the Trade

If available, modify a winged angiocatheter to allow suturing to the skin of the neck.

angiocatheter

  • Create two small holes, one on each wing of the angiocatheter, using a sharp instrument such as scissors, scalpel, or needle.
  • Place EJ line and secure to the skin using sutures, similar to stabilization of central or arterial line.

Winged angiocatheters may not be available in all clinical institutions. International readers of ALiEM may be more familiar with their use.

However, this trick introduces the idea of finding creative modifications of available catheters to allow for suturing and securing of alternative IV lines. Modifications similar to this Trick of the Trade can be considered when placing “deep” peripheral IVs or pseudo-midline IVs such as when using extended-length angiocatheters or repurposed arterial catheters where suture can be wrapped around the hub. This approach may also be useful in peripheral cannulation of the internal jugular vein. 

Tip: Be careful not to pierce the catheter or compress it down when suturing.

More from ALiEM on EJ cannulation:

Interest in other tricks?

Read more articles in the Tricks of the Trade series.

By |2022-09-08T15:18:30-07:00Sep 9, 2022|Tricks of the Trade|
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