title: Pulmonary artery dissection following balloon valvuloplasty in a dog with pulmonic stenosis.
abstract: A 3-month-old, 9.9 kg, male pit bull cross was referred for evaluation of collapse. A left basilar systolic heart murmur graded V/VI and a grade IV/VI right basilar systolic heart murmur were ausculted. Echocardiography showed severe pulmonic stenosis characterized by annular hypoplasia, leaflet thickening, and leaflet fusion. After 1 month of atenolol therapy, a pulmonic valve balloon valvuloplasty procedure was performed, and the intra-operative right ventricular pressure was reduced by 43%. Echocardiography, performed the following day, showed apparent rupture of a pulmonary valve leaflet and a membranous structure within the pulmonary artery consistent with a dissecting membrane. Short-term follow-up has shown no apparent progression of the pulmonary artery dissection and the patient remains free of clinical signs.
authors.affiliation: Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr. Madison, WI 53706, USA.
authors.forename: K A
authors.initials: KA
authors.lastname: Grint
authors.affiliation: Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Dr. Madison, WI 53706, USA. Electronic address: heidi.kellihan@wisc.edu.
authors.forename: H B
authors.initials: HB
authors.lastname: Kellihan
mesh_terms: D000784:Aortic Dissection / Q000000981:diagnostic imaging / Q000209:etiology / Q000662:veterinary*; D000818:Animals; D063126:Balloon Valvuloplasty / Q000009:adverse effects / Q000662:veterinary*; D003937:Diagnosis, Differential; D004283:Dog Diseases / Q000000981:diagnostic imaging / Q000628:therapy*; D004285:Dogs; D004452:Echocardiography / Q000662:veterinary; D008297:Male; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000209:etiology / Q000662:veterinary; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D011666:Pulmonary Valve Stenosis / Q000000981:diagnostic imaging / Q000628:therapy / Q000662:veterinary*
keywords: Canine; Complications; Congenital heart disease; Valve rupture; Vascular trauma