Interatrial Block Detected by a Series of ECGs Before and During Acute Coronary Syndrome Predicts Atrial Fibrillation, Atrial Flutter, and Ischemic Stroke.

ABSTRACT:

Background

Interatrial block (IAB) in an ECG, manifesting atrial pathology, is a possible risk factor for atrial arrhythmias and ischemic stroke. IAB is often transiently expressed, posing a major challenge for risk estimation when only a limited number of ECGs are available.

Methods

This is a retrospective study of 9674 consecutive patients diagnosed with acute coronary syndrome (ACS) between 2007 and 2018. All standard ECGs registered between January 2007 and March 2023 (n=206 668) were digitally stored and analyzed using the General Electric Marquette 12SL algorithm for the presence of an IAB, atrial fibrillation, and atrial flutter. The population was stratified by the extent of the IAB, and patients without an IAB served as controls. Clinical phenotype data and end poin

SUBMITTER: Aarnivala V 

PROVIDER: S-EPMC12684527 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature