title: [Surgical revascularization on the beating heart in patients with low ejection fraction].
abstract: BACKGROUND
  The subset of patients most likely to benefit from off-pump coronary artery bypass grafting (OPCABG) remains a controversial issue, but the technique has been proposed to decrease postoperative mortality and morbidity. Coronary artery bypass grafting (CABG) with a cardiopulmonary bypass carries a significant risk for patients with severe left ventricular (LV) dysfunction.
  
  
  OBJECTIVE
  The objective of this study was to compare off-pump to on-pump CABG in patients with ejection fraction (EF) lower than 30%.
  
  
  METHODS
  Prospective randomized study was carried out between June 2004 and March 2006 at the Institute for Cardiovascular Diseases of the Clinical Centre of Serbia. Sixty prospectively randomized high-risk patients divided into two groups to undergo off-pump or on-pump CABG. All recruited patients had left ventricular ejection fraction lower than 30%.
  
  
  RESULTS
  Thirty patients averaging 59.2 years of age underwent 2.30 grafts on pump, and another 30 averaging 59.6 years of age underwent 2.03 grafts off pump. OPCABG patients exhibited a significantly less release of TnI (average 0.71 micro/L) than on-pump patients (3.00 micro/L). Inotropic requirements were less in the off-pump group. The patients undergoing OPCABG received fewer units of blood and had shorter postoperative length of stay in intensive care unit and hospital stay. There was no significant difference in hospital mortality and complication rate.
  
  
  CONCLUSIONS
  The present study suggests that off-pump CABG in patients with poor LV function when compared with conventional CABG achieved similar number of grafts per patient, similar in-hospital outcomes, shorter length of stay, reduced transfusion requirement, and less myocardial injury.
authors: Svetozar
authors: S
authors: Putnik
authors: Miloš
authors: M
authors: Velinović
authors: Aleksandar
authors: A
authors: Mikić
authors: Mile
authors: M
authors: Vraneš
authors: Bojan
authors: B
authors: Nikoliċ
authors: Nevena
authors: N
authors: Krstić
authors: Miljko
authors: M
authors: Ristić
mesh_terms: D001026:Coronary Artery Bypass; D047549:Coronary Artery Bypass, Off-Pump; D003327:Coronary Disease / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008875:Middle Aged; D011183:Postoperative Complications; D013318:Stroke Volume