Autor:

Buhmann, U., Bories, J.; Schröder, T.; Ennker, I.C., Ennker, J.

Erscheinungsort:

The Thoracic and Cardiovascular Surgeon 2000; 48 (Suppl. 1):143

Inhalt:

Background: Atrial fibrillation (AF) is the most common cardiac arrhythmia after CABG posing patients at risk for additional morbidity, increasing treatment costs and hospital stay. Underlying causes remain uncertain, including proarrhythmic potentials of cardiopulmonary bypass and cardioplegia. Purpose of this study was to determine whether the incidence of postoperative AF differs between patients undergoing CABG with or without cardiopulmonary bypass.

Methods: We retrospectively analysed data of 227 consecutive patients (age median 64,range 41-86) with off-pump CABG from July 1997 through May 1999 (Group 1), and 227 patients (age median 65,range 40-85) with con-ventional CABG within the same time period (Group 2). 0 pt in G 1 and 21 pt in G 2 were excluded from analysis because of preoperative AF. Results were analysed by Fisher´s Exact Test.

Results: In G 1 with preoperative sinus rhythm 31/227=13.7 % developed AF postoperatively and 50/206=24.3 % in G 2 respectively (p=0.006). All patients converted into sinus rhythm by medical treatment within their hospital stay.

Conclusion: In patients undergoing off-pump CABG postoperative AF occured significantly less frequent than in patients with conventinal CABG surgery. AF seems to be associated with cardiopulmonary bypass and cardioplegia.