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[Complete heart block after percutaneous mitral valvotomy with Inoue balloon]
P R Evora1, L P Finzi, J Haddad
1Centro Especializado do Coração e Pulmão de Ribeiro Preto, Hospital do Coração, Preto.
Arquivos Brasileiros De Cardiologia
|March 1, 1996
Summary
A rare case of permanent complete heart block occurred in a young woman after a mitral percutaneous valvotomy. Despite treatment, persistent atrioventricular block necessitated a cardiac pacemaker implantation.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Electrophysiology
Background:
- Mitral percutaneous valvotomy is a minimally invasive procedure to treat mitral stenosis.
- The Inoue balloon catheter is commonly used for this procedure.
- Atrioventricular block is a potential complication of cardiac interventions.
Observation:
- A 27-year-old female developed complete heart block during a single inflation of the Inoue balloon catheter during mitral percutaneous valvotomy.
- The atrioventricular block persisted as Mobitz II second-degree block one month post-procedure, despite corticosteroid treatment.
- The patient became symptomatic with moderate exertion.
Findings:
- The procedure led to a permanent atrioventricular conduction abnormality.
- Persistent Mobitz II block indicates significant damage to the heart's electrical system.
- The patient's symptoms correlated with the degree of heart block.
Implications:
- This case highlights a significant risk of permanent heart block associated with Inoue balloon mitral valvotomy.
- Careful patient selection and monitoring are crucial in percutaneous valvotomy procedures.
- Permanent pacemaker implantation may be required in cases of persistent, symptomatic atrioventricular block post-valvotomy.