Patent ductus arteriosus in an adult cat

14 May 2018 – News

This article describes the clinical approach and treatment of an 8-year old female cat that presented at consultation with decreased appetite, weakness, weak femoral pulses, jugular venous distension, a grade III/VI continuous heart murmur and abdominal effusion. A PDA had been detected when she was 8 months old but no clinical manifestations had been spotted since then.

When added to the clinical signs, the radiographic and ultrasonographic findings indicated right-sided congestive heart failure and pulmonary hypertension.

The cat was treated with oxygen, sildenafil, benazepril, and furosemide. She responded well and, two days later, showed clinical improvements. An additional echocardiography revealed a drop in pulmonary artery pressure, indicating vascular response to the administration of oxygen and sildenafil. This is considered a favorable prognostic factor and further supported surgical PDA occlusion as a treatment option.

The PDA was initially occluded for 10 mins while the right ventricular pressure was measured and remained stable. The surgical shunt ligation was then completed. The procedure was successful and the cat made a full recovery.

In Novo-Matos J, Hurter K, Bektas R, Grest P, Glaus T. Patent ductus arteriosus in an adult cat with pulmonary hypertension and right-sided congestive heart failure: hemodynamic evaluation and clinical outcome following ductal closure. J Vet Cardiol 2014; 16:197e203.