Alcohol septal ablation for hypertrophic obstructive cardiomyopathy
Hicham El Masry1, Jeffrey A Breall
1Krannert Institute of Cardiology, Indiana University School of Medicine.
Current Cardiology Reviews
|November 26, 2009
Summary
Alcohol septal ablation (ASA) is a minimally invasive treatment for hypertrophic obstructive cardiomyopathy, reducing outflow obstruction and improving symptoms. While generally safe, conduction disturbances requiring pacemakers occur in about 10% of patients.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Background:
- Alcohol septal ablation (ASA) developed in 1994 as an alternative to surgical myomectomy for hypertrophic obstructive cardiomyopathy.
- ASA is a catheter-based procedure using alcohol to infarct the septum, reducing dynamic outflow obstruction.
Purpose of the Study:
- To review the clinical aspects and historical background of alcohol septal ablation.
- To discuss the efficacy and complications of ASA in managing hypertrophic obstructive cardiomyopathy.
Main Methods:
- Review of clinical data and historical development of ASA.
- Discussion of procedural refinements, including myocardial contrast echocardiography.
- Analysis of complication rates, particularly conduction system disturbances.
Main Results:
- ASA effectively reduces left ventricular outflow tract obstruction and improves patient symptoms.
- Refinements have improved safety and efficacy, with reduced alcohol volumes.
- Complete heart block requiring permanent pacemaker implantation occurs in approximately 10% of patients.
Conclusions:
- Alcohol septal ablation is a valuable minimally invasive option for hypertrophic obstructive cardiomyopathy.
- While effective, careful patient selection and monitoring for conduction disturbances are crucial.
- Further randomized trials comparing ASA to surgical myomectomy are needed.
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