Peer-reviewed veterinary case report
Balloon treatment lowers heart pressure in dogs with severe subaortic
By Shen, L et al.·Published in Journal of veterinary cardiology : the official journal of the European Society of Veterinary Cardiology·2017·Department of Veterinary Clinical Sciences, United States·View original on PubMed →
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Original publication title: Aortoseptal angle and pressure gradient reduction following balloon valvuloplasty in dogs with severe subaortic stenosis.
- Species:
- dog
Plain-English summary
A group of 22 dogs with severe subaortic stenosis, a heart condition that can cause serious breathing problems and lethargy, underwent a procedure called combined cutting and high-pressure balloon valvuloplasty to improve their condition. The results showed that dogs with a specific heart angle (greater than 160 degrees) had a better reduction in pressure in the heart after the procedure compared to those with a smaller angle. This means that measuring this angle could help veterinarians determine which dogs might benefit most from this treatment. Overall, the procedure helped improve the dogs' heart function significantly over time.
People also search for: dog heart problems treatment · subaortic stenosis in dogs · balloon valvuloplasty for dogs
Abstract
INTRODUCTION: To determine the relationship between aortoseptal angle (AoSA) and the short- and long-term systolic pressure gradient (PG) reduction following combined cutting and high-pressure balloon valvuloplasty (CB/HPBV) in dogs with severe subaortic stenosis. ANIMALS: Retrospective study of 22 client-owned dogs of various breeds with severe subaortic stenosis (mean left ventricular to aortic PG = 143 mmHg; range = 80-322 mmHg) that underwent CB/HPBV. MATERIALS AND METHODS: Initial angiographic and left apical and right-sided parasternal long-axis view echocardiographic video loops were used for measuring the angle between the plane of the interventricular septum and the longitudinal axis of the ascending aorta. The PG reduction ratio immediately after CB/HPBV and 6 and 12 months later were compared with AoSA. RESULTS: Weak correlations were observed for all instances of PG reduction ratio and AoSA type. Significantly greater mean differences of PG reduction ratio were observed for angles >160° than for angles <160° at 24 h (>160° mean: 54.45, standard error [SE]: ±3.8; <160° mean: 39.88, SE: ±2.09), 6 months (>160° mean: 57.73, SE: ±10.9; <160° mean: 28.22, SE: ±3.42), and 12 months (>160° mean: 76.11, SE: ±17.5; <160° mean: 27.61, SE: ±6.44; p=0.003). CONCLUSIONS: Dogs with AoSA >160° on right-sided parasternal long-axis view echocardiograms responded with a greater PG reduction following CB/HPBV than did dogs with AoSA <160°. This suggests that AoSA is associated with long-term outcomes of CB/HPBV, and measurement could help in the evaluation of dogs that are candidates for CB/HPBV.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/28117226/