van de Watering A, Szatmári V. Spontaneous closure of an isolated congenital perimembranous ventricular septal defect in two dogs.
BMC Vet Res 2022;
18:162. [PMID:
35505347 PMCID:
PMC9063103 DOI:
10.1186/s12917-022-03266-9]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/24/2022] [Indexed: 11/26/2022] Open
Abstract
Background
Though spontaneous closure of isolated congenital ventricular septal defects in humans is very common, it has been rarely reported in dogs.
Case presentation
A 4 month old Havanese dog and a 4.5 month old Chihuahua x Jack Russell terrier cross were presented for murmur evaluation to the authors’ institution. Both puppies were clinically healthy and had a loud systolic murmur on the right hemithorax. Echocardiography in both dogs revealed a small, isolated, restrictive perimembranous congenital ventricular septal defect. No echocardiographic signs of left ventricular volume overload or pulmonary hypertension were present. Re-check auscultation in both dogs revealed the absence of a murmur, and echocardiography showed no flow through the interventricular septum. In the 9 kg Havanese dog and the 4 kg mixed breed dog, spontaneous closure occurred at 13–17 months and 12–30 months, respectively.
Conclusions
In both dogs the spontaneous closure of a congenital perimembranous ventricular septal defect took place in a young adult age. The mechanism of closure remains unclear.
Collapse