RIGHT HEART FUNCTION AND ASSESSMENT WITH SPECIAL REFERENCE TO MPI , TAPSE & IVA PRE AND POST-DEVICE CLOSURE OF OS-ASD

Abstract

Background: Ostium Secundum Atrial Septal Defect (OS-ASD) is a prevalent congenital heart defect that, if untreated, can lead to complications such as right heart enlargement, pulmonary hypertension, and heart failure. Percutaneous device closure has been recognized as a minimally invasive alternative to surgery, but its long-term effects on right heart structure and function require further evaluation. Methods: This prospective observational study involved 30 patients diagnosed with OS-ASD at the Indira Gandhi Institute of Medical Sciences, Patna. Echocardiographic measurements were taken pre-procedure, immediately post-procedure, and at follow-up intervals of one week, three months, and six months. Key parameters measured included right atrial and ventricular dimensions, Tricuspid Annular Plane Systolic Excursion (TAPSE), Myocardial Performance Index (MPI), isovolumic acceleration(IVA) and Tricuspid Regurgitation Peak Gradient (TRPG).