Objective: Partial atrioventricular septal defect is also known as ostium primum type atrial septal defect. Complications such as atrioventricular valve insufficiency, complete atrioventricular bundle blocks requiring pace-maker and left ventricle outflow obstruction may occur during postoperative period. This study presents the surgical correction results of partial atrioventircular septal defect, thus we aimed to determine the comorbidities and mid-term outcomes. In this study, we aimed to report the results of partial atrioventircular septal defect. correction operations, their comorbidities and mid-term data after discharge.