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Twenty Years of Alcohol Septal Ablation in Hypertrophic Obstructive Cardiomyopathy
Angelos G Rigopoulos1, Hubert Seggewiss
1Medizinische Klinik 1, Leopoldina Krankenhaus Schweinfurt, Gustav-Adolf-Str. 8, 97422 Schweinfurt, Germany. angelos.rigopoulos@gmail.com.
Insights
Percutaneous alcohol septal ablation is a safe and effective treatment for drug-refractory hypertrophic obstructive cardiomyopathy. This minimally invasive therapy offers comparable efficacy to surgery, improving patient prognosis and survival rates.
Area of Science:
- Cardiology
- Genetics
- Interventional Cardiology
Background:
- Hypertrophic obstructive cardiomyopathy (HOCM) is the most common genetic heart disease.
- Characterized by asymmetric septal hypertrophy and intraventricular obstruction.
- Severe cases unresponsive to medical treatment require invasive septal reduction therapy.
Purpose of the Study:
- To evaluate the role and efficacy of percutaneous transluminal alcohol septal ablation (TASA) for drug-refractory HOCM.
- To compare TASA with surgical septal myectomy.
- To assess medium- and long-term survival outcomes following TASA.
Main Methods:
- Utilizing myocardial contrast echocardiography and reduced alcohol volumes to enhance safety.
- Comparing efficacy and safety profiles of TASA versus surgical septal myectomy.
- Analyzing medium- and long-term survival data.
Main Results:
- TASA has become increasingly preferred for septal reduction in HOCM patients.
- Efficacy of TASA is comparable to surgical septal myectomy.
- Medium- and long-term survival data show improved prognosis, with survival rates similar to the general population.
Conclusions:
- Percutaneous alcohol septal ablation is a safe and effective alternative to surgery for HOCM.
- Current guidelines support TASA by experienced operators in specialized centers.
- TASA offers improved long-term survival for patients with hypertrophic obstructive cardiomyopathy.
Abstract:
Hypertrophic obstructive cardiomyopathy is the most common genetic cardiac disease and is generally characterised by asymmetric septal hypertrophy and intraventricular obstruction. Patients with severe obstruction and significant symptoms that persist despite optimal medical treatment are candidates for an invasive septal reduction therapy. Twenty years after its introduction, percutaneous transluminal alcohol septal ablation has been increasingly preferred for septal reduction in patients with drug refractory hypertrophic obstructive cardiomyopathy. Myocardial contrast echocardiography and injection of reduced alcohol volumes have increased safety, while efficacy is comparable to the surgical alternative, septal myectomy, which has for decades been regarded as the 'gold standard' treatment. Data on medium- and long-term survival show improved prognosis with survival being similar to the general population. Current guidelines have supported its use by experienced operators in centres specialised in the treatment of patients with hypertrophic obstructive cardiomyopathy.
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