Estimation of the Aortic Valve Annular Size Measured by Pre-Operative Echocardiogram Validated Against Intra Operative Measurement by Standard Valve Sizers in Patient Undergoing Aortic Valve Replacement Open Heart Surgery. Journal of Bahria University Medical and Dental College, [S. l.], v. 16, n. 02, p. 627–633, 2026. DOI: 10.51985/. Disponível em: https://jbumdc.bahria.edu.pk/index.php/jbumdc/article/view/613. Acesso em: 23 apr. 2026.