Resumo

IRIGOIN, JAVIER et al. Incidencia de la fibrilación auricular poscirugía de revascularización miocárdica: asociación con uso de circulación extracorpórea. Rev.Urug.Cardiol. [online]. 2007, vol.22, n.2, pp.123-129. ISSN 1688-0420.

Atrial fibrillation (AF) is one of the most common complications in the post-operative period of coronary artery bypass grafting. The detection of the risk factors for the development of post-operative AF could help to understand its physiopathology, and to develop useful prevention strategies. Many studies have assessed the relation between postoperative AF and surgical factors as the use of cardiopulmonary bypass. The studies’ results differ. Aims: to assess the incidence of the diagnosis of AF in the postoperative period of coronary artery bypass surgery, and its relation with the use of cardiopulmonary bypass. Methods: incidence of the diagnosis of AF was calculated in patients undergoing first and elective coronary artery bypass surgery from April 1995 to December 2004 (n=2459). Incidence of AF was calculated for patients undergoing on-pump and off-pump coronary artery bypass grafting. Results: The cumulative relative risk (CI 95%) of AF with on-pump surgery is 1.57 (1.18-2.02). The annual relative risks showed values over 1, but the confidence intervals did not allow rejecting the null hypothesis. Conclusion: the use of cardiopulmonary bypass was associated to an increased incidence in the diagnosis of postoperative AF, although with poor clinical significance.

Palavras-chave : ATRIAL FIBRILLATION; MYOCARDIAL REVASCULARIZATION; EXTRACORPOREAL CIRCULATION.

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