Mashhad Razavi Hospital Razavi Journal of Medicine 3115-753X 13 2 2025 06 02 The Biometric Approach as a Novel Modified Two-Patch Technique for Complete Atrioventricular Septal Defect Repair 23 29 118581 10.30483/rijm.2025.254570.1362 EN Mahmood Hosseinzadeh Maleki Department of Cardiac Surgery, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran 0000-0003-3254-5112 Afsaneh Mohammadi Department of Cardiology, Razavi Hospital, Imam Reza International University, Mashhad, Iran 0000-0002-0124-4555 Saeed Askarzadeh Department of Cardiology, Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran Ahmad Safari Soltanabad Department of Extra-Corporeal Circulation (ECC), Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran Samane Daneshmand Department of Extra-Corporeal Circulation (ECC), Razavi Hospital, Imam Reza International University, Mashhad, Iran Farhad Samadieh Department of Extra-Corporeal Circulation (ECC), Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran Mohsen Yaghubi Department of Extra-Corporeal Circulation (ECC), Razavi Hospital, Imam Reza International University, Mashhad, Iran 0000-0001-8061-3779 Journal Article 2025 06 02 <strong>Background:</strong> Pediatrics with atrioventricular septal defects (AVSDs), especially the complete AVSD, have significant morbidity and mortality due to dangerous postoperative complications.<br /> <br /><strong>Objectives:</strong> We introduce a novel modified technique for complete atrioventricular septal defect repair with two years of follow-up.<br /> <br /><strong>Methods:</strong> After the cardiopulmonary bypass was established, we first measured the ventricular septal defect's width and the chordae tendineae length that are adjunct to the anterior leaflet of the mitral valve to the interventricular septum. The ventricular septal defect was then repaired in two separate stages with the biologic pattern of mitral and tricuspid valves, with the Bovine patch.<br /> <br /><strong>Results:</strong> Echocardiographic findings immediately after surgery and two years of follow-up revealed good left ventricular function, besides no residual atrial septal or ventricular septal defect. Also, the findings showed no evidence of mitral regurgitation and LVOT obstruction.<br /> <br /><strong>Conclusion:</strong> The novel technique in patients with complete atrioventricular septal defect repair accompanied by more minor postoperative short-term and long-term complications.<br /><em> </em><br /><br />  https://journal.razavihospital.ir/article_118581_7b87bdccb3d85a7440f5de779e58ef69.pdf