High-pressure balloon dilation in a dog with supravalvular aortic stenosis.
A 6-month-old female intact Goldendoodle was presented for diagnostic work up of a grade IV/VI left basilar systolic heart murmur. An echocardiogram was performed and revealed a ridge of tissue distal to the aortic valve leaflets at the sinotubular junction causing an instantaneous pressure gradient of 62 mmHg across the supravalvular aortic stenosis and moderate concentric hypertrophy of the left ventricle. Intervention with a high-pressure balloon dilation catheter was pursued and significantly decreased the pressure gradient to 34 mmHg. No complications were encountered. The patient returned in 5 months for re-evaluation and static long-term reduction in the pressure gradient was noted.
University of Minnesota, College of Veterinary Medicine, 1365 Gortner Avenue, Minneapolis, MN, 55108, USA. Electronic address: pinko004@umn.edu.
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Pinkos
University of Minnesota, College of Veterinary Medicine, 1365 Gortner Avenue, Minneapolis, MN, 55108, USA.
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Stauthammer
University of Minnesota, College of Veterinary Medicine, 1365 Gortner Avenue, Minneapolis, MN, 55108, USA.
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Rittenberg
University of Minnesota, College of Veterinary Medicine, 1365 Gortner Avenue, Minneapolis, MN, 55108, USA.
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Barncord
D000800:Angioplasty, Balloon / Q000662:veterinary; D000818:Animals; D021921:Aortic Stenosis, Supravalvular / Q000151:congenital / Q000000981:diagnostic imaging / Q000628:therapy / Q000662:veterinary*; D004285:Dogs / Q000002:abnormalities*; D004562:Electrocardiography / Q000662:veterinary; D005260:Female
Aortic insufficiency; Coanda effect