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Surgery for Hypertrophic Obstructive Cardiomyopathy: Comprehensive LVOT Management beyond Septal Myectomy

Alessandro Affronti1, Robert Pruna-Guillen1, Elena Sandoval1

  • 1Cardiovascular Surgery, Institut Clínic Cardiovascular, Hospital Clínic de Barcelona, University of Barcelona Medical School, c/Villarroel 170 Esc 1 5th Floor, 08036 Barcelona, Spain.

Journal of Clinical Medicine
|October 13, 2021
PubMed

Insights

Hypertrophic cardiomyopathy (HCM) can cause left ventricular outflow tract (LVOT) obstruction due to septal hypertrophy and mitral valve issues. This review explores surgical techniques beyond septal myectomy for managing HCM-related LVOT obstruction.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Medical Research

Background:

  • Hypertrophic cardiomyopathy (HCM) is a complex condition.
  • Left ventricular outflow tract (LVOT) obstruction is a common complication of HCM.
  • LVOT obstruction results from septal hypertrophy and systolic anterior motion (SAM) of the mitral valve.

Purpose of the Study:

  • To review surgical techniques for managing HCM-associated LVOT obstruction.
  • To describe procedures beyond standard septal myectomy.
  • To explain the pathophysiologic rationale for these surgical interventions.

Main Methods:

  • Literature review of surgical techniques for HCM.
  • Analysis of pathophysiologic mechanisms contributing to LVOT obstruction.
  • Description of extended septal myectomy and ancillary procedures.

Main Results:

  • Septal myectomy is a primary surgical approach for HCM-related LVOT obstruction.
  • Ancillary procedures may be necessary to address mitral valve and subvalvular abnormalities.
  • A spectrum of surgical options exists to manage complex cases.

Conclusions:

  • Surgical management of HCM-related LVOT obstruction requires addressing both septal hypertrophy and mitral valve dynamics.
  • Extended septal myectomy, potentially combined with other procedures, offers a comprehensive treatment strategy.
  • Understanding the underlying pathophysiology is crucial for selecting appropriate surgical interventions.

Keywords:
hypertrophic obstructive cardiomyopathymitral valveseptal myectomysystolic anterior motion

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