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Surgical correction of hypertrophic obstructive cardiomyopathy: seventeen-year Green Lane experience
P Ponoth1, A Kerr, P J Raudkivi
1Department of Cardiothoracic Surgery, Green Lane Hospital, Auckland, New Zealand.
Insights
Surgical treatment for hypertrophic obstructive cardiomyopathy (HOCM) in 42 patients showed varied outcomes. Persistent postoperative arrhythmias were observed in 7 cases, highlighting potential complications of HOCM surgery.
Area of Science:
- Cardiology
- Cardiac Surgery
- Internal Medicine
Background:
- Hypertrophic obstructive cardiomyopathy (HOCM) is a significant cause of heart disease.
- Surgical intervention is a primary treatment modality for symptomatic HOCM.
- Long-term outcomes and complication profiles require continuous evaluation.
Purpose of the Study:
- To analyze the surgical outcomes and long-term follow-up of patients with hypertrophic obstructive cardiomyopathy (HOCM).
- To identify demographic factors, surgical approaches, and postoperative complications in HOCM patients.
Main Methods:
- Retrospective analysis of 42 patients surgically treated for HOCM between 1977 and 1994.
- Data collection included patient demographics, surgical procedures (aortic/left ventricular (LV) combined approach vs. aortic approach alone), and postoperative follow-up.
- Complications such as arrhythmias were systematically recorded.
Main Results:
- A total of 42 patients (26 males, 16 females) underwent surgery, with a mean follow-up of 107 months.
- The majority (71%) had an aortic/left ventricular (LV) combined approach.
- Persistent postoperative arrhythmias occurred in 7 patients (16.7%), including atrial fibrillation (AF) and left bundle branch block.
Conclusions:
- Surgical treatment for HOCM can be effective, but carries risks of postoperative arrhythmias.
- The aortic/left ventricular (LV) combined approach was frequently utilized.
- Further research is needed to optimize surgical strategies and minimize complications in HOCM management.
Abstract:
Between 1977 and 1994, 42 patients were treated surgically for hypertrophic obstructive cardiomyopathy (HOCM). Patients have been followed up between 2 months to 17 years, mean of 107 months. There were 26 (62%) males and 16 (38%) females. There was only one pediatric case. There was no correlating factor among the ethnic groups (Maori, European, Indian, Asian, etc.). Family history was noted in 12% of the cases. Seventy-one percent of patients had aortic/left ventricular (LV) combined approach while 29% had aortic approach alone at the time of surgery. Five patients underwent other procedures, along with coronary artery bypass grafting in 3, mitral valve replacement in 1, and aortic valve replacement in 1. Persistent postoperative arrhythmias were found in 7 cases, atrial fibrillation (AF) in 3, and left bundle branch block in 4.