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Related Experiment Videos

[Beating heart surgery and left ventricular dysfunction].

R Cartier1, R Martineau, A Couturier

  • 1Département de chirurgie cardiaque, institut de cardiologie de Montréal, 5000 est, rue Bélanger, Montréal, Québec H1T 1C8, Canada. rc2910@aol.com

Annales De Cardiologie Et D'Angeiologie
|January 31, 2003
PubMed
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This summary is machine-generated.

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Off-pump coronary artery bypass grafting (OPCAB) offers excellent outcomes for patients with left ventricular dysfunction. This beating heart surgery approach demonstrates reduced need for postoperative support and lower operative mortality compared to traditional cardiopulmonary bypass.

Area of Science:

  • Cardiovascular Surgery
  • Cardiac Anesthesia
  • Interventional Cardiology

Background:

  • Left ventricular dysfunction (LVD) poses significant risks during cardiac surgery.
  • Traditional cardiopulmonary bypass (CPB) can exacerbate myocardial injury in patients with LVD.
  • Off-pump coronary artery bypass grafting (OPCAB) aims to mitigate these risks by avoiding CPB.

Purpose of the Study:

  • To evaluate the safety and efficacy of OPCAB in patients with LVD (ejection fraction ≤ 40%).
  • To compare outcomes of OPCAB versus CPB in this high-risk patient cohort.
  • To assess graft success, perioperative complications, and mortality rates.

Main Methods:

  • Retrospective comparison of 76 patients undergoing OPCAB for LVD against 237 patients who had CPB.

Related Experiment Videos

  • Data collected between September 1996 and April 2000 by a single surgeon.
  • Key metrics included graft number, completeness of revascularization, need for intra-aortic balloon pump (IABP), myocardial infarction, and operative mortality.

    • Main Results:

    • Similar graft numbers (approx. 3 per patient) and complete revascularization rates (95% in OPCAB) were achieved in both groups.
    • OPCAB group showed higher preoperative IABP use but lower postoperative IABP need (0% vs. 8%).
    • Myocardial infarction rates were comparable; maximal creatinine kinase-myocardial band levels were lower in OPCAB (p=0.055), and operative mortality was lower (2.6% vs. 4.6%, p=0.3).

    Conclusions:

    • Systematic coronary revascularization on the beating heart is feasible and safe in patients with LVD.
    • OPCAB can achieve complete revascularization with excellent outcomes and a trend towards lower operative mortality.
    • The beating heart approach may reduce the need for postoperative circulatory support in this vulnerable population.