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Risk factors for low cardiac output syndrome after coronary artery bypass grafting surgery

Michel Pompeu Barros de Oliveira Sá1, Joana Rosa Costa Nogueira, Paulo Ernando Ferraz

  • 1michel_pompeu@yahoo.com.br

Revista Brasileira De Cirurgia Cardiovascular : Orgao Oficial Da Sociedade Brasileira De Cirurgia Cardiovascular
|September 22, 2012
PubMed

Insights

This study identified key risk factors for low cardiac output syndrome (LCOS) after coronary artery bypass grafting (CABG). Older age, on-pump surgery, emergency procedures, incomplete revascularization, and reduced ejection fraction increase LCOS risk.

Area of Science:

  • Cardiovascular Surgery
  • Critical Care Medicine
  • Clinical Risk Factor Analysis

Background:

  • Low cardiac output syndrome (LCOS) is a significant complication following cardiac surgery, associated with high morbidity and mortality.
  • Identifying risk factors for LCOS is crucial for improving patient outcomes after coronary artery bypass grafting (CABG).

Purpose of the Study:

  • To identify independent risk factors for LCOS in patients undergoing CABG.
  • To provide data for risk stratification and prevention strategies in cardiovascular surgery.

Main Methods:

  • A historical prospective study involving 605 consecutive patients undergoing CABG.
  • Evaluation of 12 preoperative and 7 intraoperative variables.
  • Univariate and multivariate logistic regression analysis to determine independent risk factors.

Main Results:

  • The incidence of LCOS was 14.7%, with a 52.8% mortality rate among affected patients.
  • Independent risk factors identified: age > 60 years (OR 2.00), on-pump CABG (OR 2.16), emergency surgery (OR 4.71), incomplete revascularization (OR 2.62), and ejection fraction <50% (OR 2.62).

Conclusions:

  • Age over 60, on-pump CABG, emergency surgery, incomplete revascularization, and ejection fraction below 50% are significant independent risk factors for LCOS.
  • These findings can inform clinical practice to mitigate LCOS risk in CABG patients.
Abstract

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