Key Point Challenge of Diagnosis in LBBB and RV Pacing: Both left bundle branch block (LBBB) and right ventricular (RV) paced rhythms can obscure the ECG identification of acute myocardial…
A 65-year-old man presents to the ED with chest pain and diaphoresis concerning for an acute coronary syndrome. The following ECG is obtained:
A 85-year-old woman with a known history of LBBB presents to the ED with chest pain concerning for acute ischemia. The following ECG is obtained: