Successful long-term patent ductus arteriosus closure in dogs can be achieved with the use of nonabsorbable or absorbable monofilament synthetic sutures.
Schlake A, Mampaey G, Proteasa A, Smets P, de Rooster H, Van Goethem B · Journal of the American Veterinary Medical Association · 1 April 2026
Both polypropylene and polydioxanone sutures effectively close canine PDA without recanalization.
This retrospective cohort study evaluated synthetic monofilament suture materials for surgical ligation of left-to-right shunting patent ductus arteriosus (PDA) in dogs. Forty-three dogs were included: 23 receiving nonabsorbable polypropylene sutures and 20 receiving slowly absorbable polydioxanone sutures, with minimum 5-month follow-up. No significant differences were found between groups regarding patient demographics, duct size, surgical parameters, or intraoperative hemorrhage. Complete ligation was achieved in 41 of 43 dogs. Postoperative residual ductal flow detected in one dog per group resolved by final follow-up. Critically, no recanalization occurred in either group during the study period. The findings demonstrate that both nonabsorbable polypropylene and absorbable polydioxanone sutures produce comparable outcomes to traditional silk sutures for PDA closure. These synthetic materials offer effective alternatives with success rates similar to conventional techniques, providing surgeons with additional options for this common congenital cardiac procedure in small animal practice.
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