Recent unstable angina and off-pump coronary artery bypass grafting is not related to postoperative atrial fibrillation.
OBJECTIVE
Atrial fibrillation (AF) is the most frequently encountered postoperative arrhythmic complication after coronary artery bypass grafting (CABG). The purpose of the present study was to investigate the incidence and predictors of postoperative AF in patients with stable and unstable angina pectoris undergoing on-pump and off-pump CABG procedures.


METHODS
One hundred and seventeen stable, unstable on-pump and off-pump CABG patients were included in the present study. Holter data were collected 1 day before the operation to the 2nd postoperative day. AF was registered as positive if any AF event occurred.


RESULTS
The overall incidence of postoperative AF and sustained AF was 31.6 and 25.6%, respectively. Postoperative AF incidences in stable on-pump, unstable on-pump and stable off-pump patients were 29.5, 39.0 and 25%, respectively (p = 0.412). Patients with AF had compromised postoperative haemodynamic function, greater need of inotropic support and antiarrhythmic medication, and longer intensive care unit (ICU) stays.


CONCLUSIONS
Post-CABG AF is associated with more complicated postoperative outcome. Recent unstable angina and off-pump procedure is not related to the occurrence of post-CABG AF.
Wu
Zhong-Kai
ZK
Division of Cardiothoracic Surgery, Department of Surgery, Tampere University Hospital, Tampere, Finland.
Iivainen
Tiina
T
Pehkonen
Erkki
E
Laurikka
Jari
J
Tarkka
Matti R
MR
D000368:Aged; D000789:Angina, Unstable / Q000150:complications* / Q000453:epidemiology* / Q000601:surgery; D000889:Anti-Arrhythmia Agents; D001281:Atrial Fibrillation / Q000188:drug therapy / Q000453:epidemiology* / Q000209:etiology*; D006328:Cardiac Catheterization; D017023:Coronary Angiography; D001026:Coronary Artery Bypass / Q000009:adverse effects* / Q000379:methods; D004562:Electrocardiography; D005260:Female; D006353:Heart-Assist Devices / Q000009:adverse effects*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D011183:Postoperative Complications; D012307:Risk Factors; D016896:Treatment Outcome
D000889:Anti-Arrhythmia Agents