title: On-pump beating-heart versus conventional coronary artery bypass grafting for revascularization in patients with severe left ventricular dysfunction: early outcomes.
abstract: BACKGROUND
  We sought to evaluate the effects of on-pump beating-heart versus conventional coronary artery bypass grafting techniques requiring cardioplegic arrest in patients with coronary artery disease with left ventricular dysfunction.
  
  
  METHODS
  We report the early outcomes associated with survival, morbidity and improvement of left ventricular function in patients with low ejection fraction who underwent coronary artery bypass grafting between August 2009 and June 2012. Patients were separated into 2 groups: group I underwent conventional coronary artery bypass grafting and group II underwent an on-pump beating-heart technique without cardioplegic arrest.
  
  
  RESULTS
  In all, 131 patients underwent coronary artery bypass grafting: 66 in group I and 65 in group II. Left ventricular ejection fraction was 26.6% ± 3.5% in group I and 27.7% ± 4.7% in group II. Left ventricular end diastolic diameter was 65.6 ± 3.6 mm in group I and 64.1 ± 3.2 mm in group II. There was a significant reduction in mortality in the conventional and on-pump beating-heart groups (p < 0.001). Perioperative myocardial infarction and low cardiac output syndrome were higher in group I than group II (both p < 0.05). Improvement of left ventricular function after the surgical procedure was better in group II than group I.
  
  
  CONCLUSIONS
  The on-pump beating-heart technique is the preferred method for myocardial revascularization in patients with left ventricular dysfunction. This technique may be an acceptable alternative to the conventional technique owing to lower postoperative mortality and morbidity.
authors.affiliation: From the Department of Cardiovascular Surgery, Erzurum Training and Research Hospital, Erzurum, Turkey.
authors.forename: Bilgehan
authors.initials: B
authors.lastname: Erkut
authors.forename: Ozgur
authors.initials: O
authors.lastname: Dag
authors.forename: Mehmet Ali
authors.initials: MA
authors.lastname: Kaygin
authors.forename: Mutlu
authors.initials: M
authors.lastname: Senocak
authors.forename: Husnu Kamil
authors.initials: HK
authors.lastname: Limandal
authors.forename: Umit
authors.initials: U
authors.lastname: Arslan
authors.forename: Adem
authors.initials: A
authors.lastname: Kiymaz
authors.forename: Ahmet
authors.initials: A
authors.lastname: Aydin
authors.forename: Nail
authors.initials: N
authors.lastname: Kahraman
authors.forename: Eyup Serhat
authors.initials: ES
authors.lastname: Calik
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001026:Coronary Artery Bypass / Q000379:methods*; D003324:Coronary Artery Disease / Q000150:complications* / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome; D018487:Ventricular Dysfunction, Left / Q000150:complications*