October 22, 2014

Don't be RASH: Emergency Physician's Approach to the Undifferentiated Lesion

Editor’s note: This post was listed in both the #FOAMED Review from EM Curious AND in the LITFL Review 154 “Best of #FOAMed” section.

As an EM physician, it is difficult to have working knowledge of the hundreds of different types of rashes that exist. However, I argue that it is not the job of the EM physician to diagnose every rash that comes in the ED. That is the job of the dermatologist who has the luxury of time and biopsies. Rather, it is our duty, just like chest pain and syncope, to rule out the life-threatening causes of skin lesions, quickly identify a potentially lethal rash, and provide the appropriate initial stabilization, resuscitation and disposition (ICU, surgery).

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Left Bundle Branch Block in Myocardial Infarction: An Update

Editor’s note: This article was listed in the LITFL Review 154’s “Best of #FOAMed” section.

The left bundle branch arises from the Bundle of His, and subsequently is divided into the anterior and posterior fascicles. The anterior fascicle is usually supplied by septal perforators from the Left Anterior Descending artery, and the posterior fascicle typically has a dual supply from septal perforators from the Left Anterior Descending artery and the Posterior Descending artery (arising from the Right Coronary).

Electrocardiographically, a LBBB is defined as QRS duration greater than or equal to 120 ms; a broad-notched or slurred R wave in leads I, aVL, V5, and V6; absent Q waves in leads I, V5, and V6; and an R peak time >60 ms in leads V5 and V6 but normal in leads V1 to V3 (1). LBBB can be transient and/or rate-related (1). These morphologic changes make it difficult to discern whether or not a patient presenting to the emergency department with chest pain is experiencing a STEMI. […]

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pocus diagnosis : simultaneous bilateral patellar tendon avulsions. Ask me anything with steve carroll, do (@embasic). Home health care pharmacy.