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J Vet Cardiol. 2017 Feb;19(1):35-43. doi: 10.1016/j.jvc.2016.10.002. Epub 2016 Dec 2.

Patent ductus arteriosus in cats (Felis catus): 50 cases (2000-2015).

Author information

1
Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 4474 TAMU, College Station, TX 77843-4474, USA.
2
Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, 4474 TAMU, College Station, TX 77843-4474, USA. Electronic address: kthieman@cvm.tamu.edu.
3
Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, 300 W Drake Rd, Fort Collins, CO 80523, USA.
4
Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1052 William Moore Dr. Raleigh, NC 27607, USA.
5
Department of Clinical Sciences, Ontario Veterinary College, University of Guelph, 50 Stone Road E., Guelph, ON N1G2W1, Canada.
6
Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Ave., Gainesville, FL 32608, USA.

Abstract

OBJECTIVES:

To describe signalment, clinical characteristics, diagnostic, treatment, and outcome data in a large case series of cats with patent ductus arteriosus (PDA).

ANIMALS:

Fifty cats with confirmed PDA.

METHODS:

Retrospective review of medical records from five referral veterinary hospitals for cats with PDA between 2000 and 2015. Cats were included if a PDA was visualized echocardiographically, during surgery, or on post-mortem examination.

RESULTS:

Median age at presentation was 6 months (range: 36 days-9.7 years; n = 50), and sex distribution was approximately equal (27 male, 23 female). Most cats did not have clinical signs (70.2%; 33/47) at the time of presentation. Murmurs were classified as continuous (55%; 22/40) or systolic (45%; 18/40). Echocardiography confirmed left-to-right shunting in 33 cats (82.5%; 33/40) and right-to-left shunting in 7 (17.5%; 7/40). Concurrent cardiac anomalies were identified in 54.5% (18/33) and pulmonary hypertension in 45.7% (16/35). Closure was pursued in 68% (34/50), and complications associated with the procedure occurred in 14.7% (5/34) of cats, including one intraoperative mortality. Long-term follow up was available in 80% (40/50) of cats.

CONCLUSIONS:

Cats with PDA often do not display clinical signs and may not have the characteristic physical examination findings typical of PDA in dogs. An increased prevalence of concurrent cardiac anomalies and pulmonary hypertension were found relative to previous reports. Thoracic radiographs and echocardiogram may provide the most comprehensive information for making a diagnosis and treatment recommendations. PDA closure was associated with a favorable long-term outcome in cats included in this study.

KEYWORDS:

Congenital; Feline; Pulmonary hypertension; Shunt; Surgery

PMID:
27919727
DOI:
10.1016/j.jvc.2016.10.002
[Indexed for MEDLINE]

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