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[Surgical treatment of hypertrophic obstructive cardiomyopathy. A retrospective study]
V Andersen1, P Alstrup, K E Pedersen
1Thoraxkirurgisk afdeling T, Odense Sygehus.
Insights
Surgical intervention for hypertrophic obstructive cardiomyopathy (HOCM) can significantly improve patient functional class. However, careful patient selection is crucial due to potential perioperative complications and long-term mortality risks.
Area of Science:
- Cardiology
- Cardiac Surgery
Context:
- Hypertrophic obstructive cardiomyopathy (HOCM) presents a significant challenge in cardiac surgery.
- Surgical interventions aim to alleviate left ventricular outflow tract obstruction.
Purpose:
- To evaluate the outcomes of surgical treatment for hypertrophic obstructive cardiomyopathy.
- To assess the efficacy and safety of myotomy-myectomy and mitral valve procedures in HOCM patients.
Summary:
- Twelve patients with HOCM underwent surgery between 1976 and 1991 using myotomy-myectomy or mitral valve implantation.
- Postoperative outcomes included reduced NYHA class, but also perioperative complications like conduction disturbances and mortality.
- Long-term follow-up revealed further mortality in survivors, highlighting the need for careful risk-benefit assessment.
Impact:
- Surgical treatment can significantly improve functional capacity in selected HOCM patients.
- The study underscores the importance of patient selection criteria, particularly left ventricle outflow gradient and symptom severity (NYHA class III-IV).
- Findings inform clinical decision-making regarding surgical intervention for symptomatic HOCM unresponsive to medical therapy.
Abstract:
Twelve patients, three male and nine female, suffering from hypertrophic obstructive cardiomyopathy were operated during the period 1976 to 1991. Operative methods were myotomy-myectomy (Morrow-procedure), mitral valve implantation or both. During the perioperative period two patients developed conduction disturbances requiring pacemaker implantation, five patients had left bundle branch block, and one died. The NYHA class was significantly reduced postoperatively (p = 0.0002). Five of eleven patients surviving the perioperative period died postoperatively after a mean follow-up of 6.3 years. It is the authors' opinion, that operation should be considered in patients suffering from hypertrophic obstructive cardiomyopathy, who have a left ventricle outflow gradient of 50 mmHg or more, and who despite medical treatment have symptoms placing them in NYHA class III-IV.