Acute myocardial infarction in a patient with permanent left bundle branch pacing.

Background: Electrocardiographic diagnosis of acute myocardial infarction in the setting of cardiac pacing represents diagnostic challenge. There are no focusing data, neither reporting about diagnostic sensitivity of 12‑lead ECG with left bundle branch area pacing (LBBAP) during acute myocardial infarction (AMI).

Case Summary: We present 12‑lead ECG morphology in a patient with permanent LBBAP during AMI.