Paucis Verbis card: Septic Arthritis
In the workup of monoarticular arthritis, the question that emergency physicians constantly struggle over is whether the patient has a nongonococcal septic arthritis. This joint infection alarmingly damages and erodes cartilage within only a few days.
This installment of the Paucis Verbis (In a Few Words) e-card series reviews the JAMA Rational Clinical Examination article which asks “Does this patient have septic arthritis?” Pooled sensitivities and likelihood ratios were calculated. These statistics are always helpful when trying to figure out the patients probability of having a septic joint.
I was surprised to learn that only about 50% of patients with septic joints have a fever. Note that a hip or knee prosthesis PLUS an overlying skin infection pretty much equals a septic joint (LR = 15.0).
Risk factors are listed in the table with the corresponding sensitivities, specificities, and likelihood ratios.
PV Card: Septic Arthritis
Go to ALiEM (PV) Cards for more resources.
The treatment of shock should focus on correcting the underlying pathophysiology. With persistent hemodynamic instability, a vasopressor and/or inotrope should be selected. Reviewing receptor physiology can help you select the best-fit agent for the patient’s clinical condition. There is an especially useful table on medication selection in the reviewed 2008 EM Clinics of North America article.
With increasing awareness of CT’s irradiation risk, I thought I would review a classic 2001 article from the New England Journal of Medicine. Head CT’s previously were commonly performed prior to all lumbar punctures (LP) to rule-out meningitis. When can you safely go straight to an LP without imaging?