Secundum Atrial Septal Defect in a One-Year-Old Kangal Dog

摘要

A secundum atrial septal defect (ASD) was diagnosed in a 1-year-old Turkish Kangal dog after dissection for student education. The defect was 21.99 mm in maximum length and 8.37mm in maximum width and was elliptical. The dog had no clinical disorders.This is the first case of a secundum ASD reported in an adult Kangal dog. Atrial septal defects (ASDs) are among the most common types of congenital heart defects in humans (1). in dogs and cats, ASD has been reported rarely (2,3). The defect results from a continued postnatal communication between the 2 atria due to a hole in the interatrial septum that fails to close (4). There are 3 types of ASD, namely ostium primum ASD, ostium secundum ASD and sinus venosus ASD (2,5). The position of ostium primumASD is low in the interatrial septum, whereas ostium secundum ASD is at or near the fossa ovalis, and sinus venosus ASD occurs dorsal and cranial to the fossa ovalis (4,5). Primum ASD is more common in cats, whereas secundum ASD has been more frequentlyreported in dogs (6). This report describes the first case of secundum ASD in a 1-year-old Kangal dog.