Peer-reviewed veterinary case report
Balloon angioplasty for severe lung valve and muscle narrowing
By Winter, R L et al.·Published in Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology·2025·Department of Clinical Sciences, United States·View original on PubMed →
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Original publication title: Cutting and high-pressure balloon angioplasty in a dog with concurrent pulmonary valvar and infundibular stenosis.
- Species:
- dog
Plain-English summary
A 2-year-old female Cocker Spaniel was brought in for severe breathing problems due to pulmonary stenosis, which is a narrowing of the heart's outflow tract. Tests showed significant heart changes and two areas of obstruction. The dog underwent a procedure using cutting and high-pressure balloon angioplasty to widen the narrowed areas. After the treatment, her heart pressure improved significantly, dropping from 190 mmHg to 65 mmHg the next day, and further down to 30 mmHg after nine months.
People also search for: Cocker Spaniel heart problems · pulmonary stenosis treatment in dogs · balloon angioplasty for dog heart issues
Abstract
A two-year-old, 7.7-kg female spayed Cocker spaniel dog was presented for further evaluation of severe pulmonary stenosis. Transthoracic echocardiography revealed severe concentric hypertrophy and dilation of the right ventricle, and two distinct levels of obstruction were observed. A discrete level of obstruction was observed at the crista supraventricularis. This lesion was hyperechoic and located roughly 11 mm away from the pulmonary annulus. Additionally, pulmonary leaflets were elongated and demonstrated systolic doming. These findings were consistent with concurrent pulmonary valvar and infundibular stenosis. The peak systolic pressure gradient across the pulmonary annulus assessed by continuous-wave Doppler interrogation was 190 mmHg. The following day, pulmonary balloon angioplasty was performed successfully with cutting and high-pressure balloon catheters. The day after intervention, echocardiography revealed that the peak systolic pressure gradient across the pulmonary annulus had decreased to 65 mmHg. This pressure gradient had further decreased to 30 mmHg nine months later.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/40516238/