About Michelle Lin, MD

ALiEM Founder and CEO
Professor and Digital Innovation Lab Director
Department of Emergency Medicine
University of California, San Francisco

TED video: The happy secret to better work

If you have a few minutes, take a listen to this rather humorous and thought-provoking TED video about the “intersection of human potential, success, and happiness”. The speaker, Shawn Achor, is the CEO of Good Think Inc, a Cambridge-based consulting firm which researches positive outliers — people who are well above average, and author of “The Happiness Advantage”.

“If we study what is merely average, we will remain merely average.”

By |2019-01-28T22:19:41-08:00Apr 30, 2012|Medical Education|

Resuscitation 2012 conference

Resuscitation2012

What are you doing the rest of this week? Hop on a plane to Las Vegas and join me at the 2012 Resuscitation conference. It looks to be a great conference. I’ll be giving a 3-hour (!) discussion session on “Tips and Tricks in Emergency Medicine” on Friday. Inevitably when I given this talk, I always come away with great ideas from the audience. I’ll be sure to write them down and share on the blog.

By |2019-01-28T22:22:20-08:00Apr 26, 2012|Medical Education|

Trick of the Trade: Protecting your thumbs in mandible relocations

756148-821994-823775-1619710tn

Does anyone think that this is generally a bad idea when closed-reducing mandible dislocations? Yes, it’s easiest to apply downward pressure on the mandible by pushing down on the occlusal surfaces of the molar teeth. Sometimes, however, when the mandible relocates into place, the teeth clamp shut abruptly – placing your thumbs at risk. How can you prevent any injuries to yourself?

One way is to slide gauze into the mouth during your procedure. Start the video around the 1:30 mark for an exam.

 

Trick of the Trade: Mandible Relocations

Apply a protective roll of gauze over each thumb. Additionally, you can wear a second glove to cover the gauze. No, those are NOT just fat thumbs under the gloves.

ThumbWraps1

ThumbWraps2 Thanks to Dr. Liz Brown (UCSF-SFGH EM resident) for the trick!

 
By |2016-11-11T18:45:03-08:00Apr 24, 2012|ENT, Tricks of the Trade|

Paucis Verbis: Blunt Abdominal Injury, Likelihood Ratios

blunt abdominal injury

This month’s issue of JAMA addresses the question “Does this patient have a blunt intra-abdominal injury?” as part of the always-popular Rational Clinical Examination series.

The systematic review of the literature summarizes the accuracy of findings for your blunt trauma patient in diagnosing intra-abdominal injuries. Specifically, likelihood ratios (LR) are summarized. These LRs can be used to plot on the Bayes nomogram below. You draw a straight line connecting your pretest probability and the LR. This yields your posttest probability.

 

Bayes-1

The most predictive positive LR include: Abdominal rebound tenderness, a “seat belt sign”, ED hypotension, hematocrit < 30%, AST or ALT > 130, urine with > 25 RBCs, base deficit < -6 mEq/L, and a positive FAST ultrasound.

The trouble is that the absence of these findings aren’t as helpful in ruling-out injury, with negative LR’s very close to 1.0. The two exceptions are base deficit and FAST ultrasound with a negative LR of 0.12 and 0.26, respectively.


Adapted from [1]
Go to ALiEM (PV) Cards for more resources.

I find it interesting that there are studies on hepatic transaminase levels. Anyone else getting these in their trauma patients? I traditionally don’t. Many of our patients have a history of hepatitis C and underlying alcoholic hepatitis. If suspicious for blunt abdominal trauma, we just get the CT.

Reference

  1. Nishijima D, Simel D, Wisner D, Holmes J. Does this adult patient have a blunt intra-abdominal injury? JAMA. 2012;307(14):1517-1527. [PubMed]
By |2021-10-10T19:02:16-07:00Apr 20, 2012|ALiEM Cards, Gastrointestinal, Trauma|

Trick of the Trade: Peritonsillar abscess aspiration technique using IV tubing

peritonsillar abscess aspirationA few weeks ago, I gave a Tricks of the Trade talk for the Stanford-Kaiser Emergency Medicine residents and faculty. I was overwhelmed by the great, creative ideas that came up during our discussion. An always popular topic is the drainage of peritonsillar abscesses. Sometimes it can be difficult to aspirate from a syringe using only one hand, especially with the awkward angle that you might encounter.

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By |2024-10-22T15:42:12-07:00Apr 17, 2012|ENT, Tricks of the Trade|

Paucis Verbis: GRACE score for ACS risk stratification

ChestPain grace risk score for ACS

Risk stratification of the undifferentiated chest pain patients in the Emergency Department continues to  plague emergency physicians. It’s partly the reason why I created a TIMI risk score card for unstable angina and non-ST elevation MI in 2010.
Have you heard of the 9-variable GRACE risk stratification score? Thanks to Jeff Bray (physician assistant in a rural critical access ED), I have now. He graciously shared his personal reference card on this with me, which I only minimally reformatted to fit my Paucis Verbis card dimensions.

GRACE stands for Global Registry for Acute Coronary Events. It supposedly outperforms the TIMI scoring slightly in accurately predicting complications in the short and long term. Instead of calculating this manually, which can be a pain, now there are calculators out there:

Anyone use this scoring system?

PV Card: GRACE Risk Score for ACS


Adapted from [1, 2]
Go to ALiEM (PV) Cards for more resources.

References

  1. Eagle K, Lim M, Dabbous O, et al. A validated prediction model for all forms of acute coronary syndrome: estimating the risk of 6-month postdischarge death in an international registry. JAMA. 2004;291(22):2727-2733. [PubMed]
  2. D’Ascenzo F, Biondi-Zoccai G, Moretti C, et al. TIMI, GRACE and alternative risk scores in Acute Coronary Syndromes: a meta-analysis of 40 derivation studies on 216,552 patients and of 42 validation studies on 31,625 patients. Contemp Clin Trials. 2012;33(3):507-514. [PubMed]
By |2021-10-10T19:05:05-07:00Apr 13, 2012|ALiEM Cards, Cardiovascular|

Video: How to make a screencast video

A reader, Mark, posted a question yesterday in the chat box about screencapture softwares out there. I personally use iShowU to capture such videos as my instructional video on linking your Evernote account (above) to automatically read and download my weekly public Paucis Verbis notebook. Mark also specifically asked about what Dr. Rob Rogers (Univ of Maryland) uses.

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By |2019-01-28T22:26:47-08:00Apr 11, 2012|Social Media & Tech|
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