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[Left ventricular remodeling in patients with hypertrophic obstructive cardiomyopathy treated with percutaneous

Socorro Rivera1, Marta Sitges, Manel Azqueta

  • 1Institut d'Investigacions Biomèdiques August Pi i Sunyer. Institut de Malalties Cardiovasculars. Hospital Clínic. Universidad de Barcelona. Barcelona. España.

Revista Espanola De Cardiologia
|December 13, 2003
PubMed

Insights

Alcohol septal ablation for hypertrophic obstructive cardiomyopathy reduces outflow tract obstruction, leading to significant left ventricular remodeling. This includes increased chamber size and regression of hypertrophy, suggesting long-term clinical improvement.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Cardiac Imaging

Background:

  • Hypertrophic obstructive cardiomyopathy (HOCM) is characterized by left ventricular hypertrophy (LVH) potentially exacerbated by outflow tract obstruction.
  • Alcohol septal ablation is a therapeutic option for HOCM to reduce obstruction.

Purpose of the Study:

  • To assess the impact of reducing left ventricular outflow tract (LVOT) obstruction via alcohol septal ablation on LVH and remodeling in HOCM patients.
  • To evaluate the changes in LV dimensions, wall thickness, and LVOT pressure gradients over time post-ablation.

Main Methods:

  • A cohort of 20 HOCM patients undergoing alcohol septal ablation was studied.
  • Doppler echocardiography was performed at baseline, immediately post-ablation, and at 3 and 12 months follow-up.
  • Measurements included LV dimensions, wall thickness, and LVOT pressure gradients.

Main Results:

  • Alcohol septal ablation significantly reduced LVOT pressure gradients immediately post-procedure.
  • At 12 months, significant increases in LV end-diastolic and end-systolic diameters and volumes were observed.
  • A reduction in septal and posterior wall thickness occurred, indicating regression of hypertrophy.

Conclusions:

  • Relief of LVOT obstruction through alcohol septal ablation promotes LV remodeling and hypertrophy regression in HOCM patients.
  • These mid- to long-term changes suggest potential for clinical benefit and improved patient outcomes.
Abstract

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