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Minimally invasive aortic valve replacement in left ventricular dysfunction.

Minoru Tabata1, Sary F Aranki, John A Fox

  • 1Division of Cardiac Surgery, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA.

Asian Cardiovascular & Thoracic Annals
|June 2, 2007
PubMed
Summary
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Minimally invasive aortic valve replacement using an upper hemisternotomy is safe for patients with left ventricular dysfunction. Outcomes were similar to traditional full sternotomy, showing comparable safety and effectiveness.

Area of Science:

  • Cardiovascular Surgery
  • Cardiac Valve Surgery
  • Minimally Invasive Cardiac Surgery

Background:

  • Left ventricular dysfunction (LVD) poses challenges for aortic valve replacement (AVR).
  • The safety and efficacy of minimally invasive AVR in LVD patients remain under-investigated.
  • Limited data exists comparing upper hemisternotomy to full sternotomy in this specific patient group.

Purpose of the Study:

  • To evaluate the safety and outcomes of minimally invasive AVR via upper hemisternotomy in patients with LVD.
  • To compare these outcomes with traditional full sternotomy AVR.
  • To determine if upper hemisternotomy is a viable alternative for AVR in patients with reduced ejection fraction.

Main Methods:

  • Retrospective review of 140 patients with ejection fraction ≤40% undergoing isolated AVR (July 1996 - March 2005).

Related Experiment Videos

  • Procedures performed via upper hemisternotomy (n=73) or full sternotomy (n=67).
  • Propensity score analysis to create matched cohorts (n=41 each) for outcome comparison.

    • Main Results:

    • No significant difference in operative mortality between upper hemisternotomy (2.4%) and full sternotomy (4.8%).
    • Similar rates of postoperative complications, blood transfusion needs, and hospital length of stay.
    • Comparable rates of discharge to home for both surgical approaches.

    Conclusions:

    • Aortic valve replacement via upper hemisternotomy is a safe and effective option for patients with left ventricular dysfunction.
    • Morbidity and mortality outcomes are similar to those achieved with full sternotomy.
    • Minimally invasive AVR using upper hemisternotomy offers comparable results to traditional sternotomy in high-risk patients.