Risk stratification for sudden cardiac death after septal myectomy
Richard D Rothman1, Muhamad A Safiia1, Patricia A Lowry1
1Cardiology Division, Department of Medicine, Cardiac Surgical Division, Department of Surgery, and Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
Insights
Risk stratification for sudden cardiac death (SCD) is crucial after septal myectomy for hypertrophic obstructive cardiomyopathy (HOCM). Early identification of risk factors and timely intervention, such as implantable cardioverter-defibrillator (ICD) implantation, can prevent fatal outcomes.
Area of Science:
- Cardiology
- Cardiac Surgery
- Electrophysiology
Background:
- Sudden cardiac death (SCD) risk stratification after septal myectomy for hypertrophic obstructive cardiomyopathy (HOCM) is underemphasized.
- Hypertrophic obstructive cardiomyopathy (HOCM) is a significant cause of SCD.
Purpose of the Study:
- To highlight the importance of risk stratification for SCD post-septal myectomy in HOCM patients.
- To present cases illustrating the consequences of inadequate SCD risk assessment.
Main Methods:
- Case report of two patients undergoing septal myectomy for HOCM.
- Identification of SCD risk factors post-surgery.
- Management with implantable cardioverter-defibrillator (ICD) in one patient.
Main Results:
- One patient with identified risk factors received an ICD, which successfully treated ventricular tachycardia (VT).
- A second patient who delayed ICD implantation experienced SCD.
- Risk factors for SCD were identified in both cases post-myectomy.
Conclusions:
- Risk stratification for SCD is essential following septal myectomy in HOCM.
- Timely intervention based on risk assessment can improve patient outcomes.
- These cases underscore the need for proactive SCD management in this population.
Background:
The importance of risk stratification for sudden cardiac death (SCD) after septal myectomy for hypertrophic obstructive cardiomyopathy (HOCM) has not been emphasized previously.
Methods And Results:
We report 2 patients with SCD or ventricular tachycardia (VT) after septal myectomy for HOCM in whom risk factors for SCD were identified following surgical myectomy. One received an implantable cardioverter-defibrillator (ICD), which subsequently provided appropriate discharges for VT. The other delayed ICD implantation and suffered SCD.
Conclusion:
These cases emphasize the importance of risk stratification for SCD after septal myectomy for HOCM.
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