Balloon valvuloplasty of valvular pulmonary stenosis in a neonatal foal

H K Junge; T Glaus; J N Matos; C Meira; A Schwarz; S Hoey; M Dennler; C C Schwarzwald; K J Mitchell

doi:10.1016/j.jvc.2021.04.008

Balloon valvuloplasty of valvular pulmonary stenosis in a neonatal foal

J Vet Cardiol. 2021 Aug:36:48-54. doi: 10.1016/j.jvc.2021.04.008. Epub 2021 May 5.

Authors

H K Junge¹, T Glaus², J N Matos², C Meira³, A Schwarz³, S Hoey⁴, M Dennler⁴, C C Schwarzwald¹, K J Mitchell⁵

Affiliations

¹ Clinic for Equine Internal Medicine, Equine Department, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, CH-8057, Switzerland.
² Division of Cardiology, Clinic for Small Animal Internal Medicine, Small Animal Department, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, CH-8057, Switzerland.
³ Anaesthesiology Section, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, CH-8057, Switzerland.
⁴ Clinic for Diagnostic Imaging, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, CH-8057, Switzerland.
⁵ Clinic for Equine Internal Medicine, Equine Department, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, CH-8057, Switzerland. Electronic address: kmitchell@vetclinics.uzh.ch.

PMID: 34077876
DOI: 10.1016/j.jvc.2021.04.008

Abstract

In a 1-day old filly with a loud heart murmur, transthoracic echocardiography revealed right ventricular hypertrophy associated with severe pulmonary valvular stenosis and a transvalvular pressure gradient (between right ventricle and pulmonary artery) of 125 mmHg. Computed tomographic angiography confirmed the finding, with no evidence of other relevant concurrent abnormalities. Balloon valvuloplasty was performed using a single balloon technique. The foal recovered well from anaesthesia. Following the procedure, the right ventricle-pulmonary artery transvalvular gradient decreased to 38 mmHg. At follow up examinations after 1 month, 1 year and 2 years, the filly showed normal exercise capacity and echocardiography confirmed the persistent substantial improvement in the transvalvular outflow gradient.

Keywords: CT angiography; Congenital heart disease; Echocardiography; Equine; Interventional procedure.

Publication types

Case Reports

MeSH terms

Angiography
Animals
Balloon Valvuloplasty* / veterinary
Echocardiography / veterinary
Female
Heart Ventricles
Horse Diseases*
Horses
Pulmonary Valve Stenosis* / diagnostic imaging
Pulmonary Valve Stenosis* / therapy
Pulmonary Valve Stenosis* / veterinary
Treatment Outcome