Current ECG Aspects of Interatrial Block

Cardiovascular Research Foundation, Cardiovascular ICCC- Program, Research Institute Hospital de la Santa Creu i Sant Pau; Illes Balears Health Research Institut (IdISBa), Hospital Son Espases; Cardiology Department, Hospital General Universitario

The document provides a comprehensive review of interatrial block (IAB), focusing on its electrocardiographic manifestations. It elaborates on the mechanisms behind IAB, differentiating between first-degree, partial, and advanced forms. The review also covers typical and atypical ECG patterns associated with IAB, including variations in P-wave morphology and duration, and discusses the role of atrial fibrosis in its development. Clinical correlations and prognostic significance are also touched upon, referencing relevant research.