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Published on: June 12, 2021
Invasive Management of Hypertrophic Cardiomyopathy With Clinically Important Obstruction: Catheter Intervention Is
Mohammed N Meah1, Wern Y Ding1, Robert M Cooper2
1Liverpool Heart and Chest Hospital, Liverpool, United Kingdom.
Insights
Hypertrophic cardiomyopathy treatment is evolving. Catheter-based alcohol septal ablation may be superior to surgical myomectomy for relieving left ventricular outflow tract obstruction and improving patient outcomes.
Area of Science:
- Cardiology
- Inherited Cardiac Conditions
Background:
- Hypertrophic cardiomyopathy (HCM) is a genetic heart disease causing myocardial thickening.
- Left ventricular hypertrophy in HCM can lead to outflow tract obstruction, increasing mortality and morbidity.
- Septal reduction therapies aim to alleviate obstruction, reduce symptoms, and improve prognosis.
Purpose of the Study:
- To challenge the current guideline recommendation of surgical myomectomy as the gold standard for HCM.
- To review the advancements in catheter-based septal reduction therapies.
- To present evidence supporting alcohol septal ablation as a superior alternative to surgical myomectomy.
Main Methods:
- Review of historical and recent data on septal reduction therapies for HCM.
- Comparative analysis of surgical myomectomy and catheter-based alcohol septal ablation outcomes.
- Discussion of guideline recommendations and expert consensus.
Main Results:
- Surgical myomectomy and alcohol septal ablation both carry risks.
- Significant progress has been made in catheter-based septal reduction over the past two decades.
- Evidence suggests alcohol septal ablation may offer superior outcomes compared to surgical myomectomy.
Conclusions:
- Current guidelines may need re-evaluation regarding the gold-standard treatment for obstructive HCM.
- Catheter-based alcohol septal ablation represents a significant advancement in HCM management.
- Further evidence supports considering alcohol septal ablation as a primary treatment option.
Abstract:
Hypertrophic cardiomyopathy is a common inherited cardiac condition where the myocardium progressively thickens in the absence of abnormal loading conditions. Left ventricular hypertrophy often leads to outflow tract obstruction, and this confers significant mortality and morbidity implications. Septal reduction therapies aim to relieve the obstruction in an attempt to reduce the burden of symptoms and potentially improve prognosis. However, both surgical and catheter-based approaches to septal reduction carry risks. At present, international guidelines and expert consensus statements suggest surgical myomectomy is the gold-standard treatment. In this point-counterpoint review, we discuss why in our opinion this recommendation should be reconsidered. We hope to cover the history of catheter based septal reduction therapies and the significant advances made over the last two decades. We also hope to show why we believe the current evidence shows catheter-based alcohol septal ablation is superior to surgical myomectomy.
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