ER EOR, PAEA EMERGENCY MEDICINE EXAM 2024 WITH 100% CORRECT ANSWERS

a wide, bizarre QRS usually occurring earlier than expected with T wave in opposite direction? tx?Answer - PVC (premature ventricular contraction); no tx (may just be dehydrated) -subacute/s. viridans endocarditis treatmentAnswer - PCN OR ampicillin + gentamycin infection of the endothelium/valves 2ndry to colonization (during transient/persistent bacteremia)Answer - Endocarditis MC valve involved in infective endocarditis in non IVDAAnswer - mitral valve M>A>T>P MC valve involved in infective endocarditis with IVDAAnswer - Tricuspid M>A>T>P Infection of NORMAL valves with virulent organism (s)Answer - Acute endocarditis Characteristics of left atrial enlargementAnswer - m shaped P wave in lead II Biphasic P wave in V1 with larger terminal component Characteristics of right atrial enlargementAnswer - tall P wave in lead II >3 mm Biphasic P in V1 with larger initial component Indolent infection of abnormal valves with less virulent organisms (S. viridans)Answer - Subacute bacterial endocarditis