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No additive effect of passive containment surgery in patients with aortic regurgitation and left ventricular dilation

Fredrik Bredin1, Arne Olsson, Anders Franco-Cereceda

  • 1Section of Cardiothoracic Surgery and Anaesthesiology, Institution of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden. fredrik.bredin@karolinska.se

The Annals of Thoracic Surgery
|July 24, 2007
PubMed

Insights

The Acorn Cor Cap Cardiac Support Device did not improve left ventricular remodeling or function in patients with aortic regurgitation and severe ventricular dilatation after aortic valve replacement. This cardiac support device showed no added benefit compared to valve replacement alone.

Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Biomedical Engineering

Background:

  • Left ventricular (LV) function improvement after aortic valve replacement (AVR) for aortic regurgitation (AR) correlates with reduced LV dilatation.
  • Advanced LV dilatation in AR patients poses challenges for post-AVR recovery.

Purpose of the Study:

  • To evaluate the efficacy of the Acorn Cor Cap Cardiac Support Device (CSD) in reducing ventricular dilatation.
  • To assess the impact of CSD on cardiac function in AR patients undergoing AVR.

Main Methods:

  • A case-control study involving ten patients with AR and LV dilatation undergoing AVR with mechanical valves.
  • Five patients received the Acorn CSD concomitantly with AVR.
  • Echocardiography assessed cardiac function and dimensions preoperatively and at 3 and 12 months postoperatively.

Main Results:

  • Both groups showed significant reductions in LV end-diastolic and end-systolic diameters post-AVR.
  • The CSD group did not demonstrate a statistically significant difference in LV dimension reduction compared to the AVR-alone group.
  • Left ventricular ejection fraction remained stable in both groups throughout the study period.

Conclusions:

  • Concomitant use of the Acorn Cor Cap Cardiac Support Device does not enhance reverse remodeling in AR patients with severe LV dilatation.
  • The CSD provided no additional benefit to cardiac function or LV dimensions compared to AVR alone.
Abstract

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