Raheel Hussain, Ziauddin A Kashmiri, Rana M Hamid, Masood Hameed Khan.
Atrial fibrillation after Coronary Bypass Surgery: comparision of incidence between on- pump and off-pump techniques.
Med Channel Jan ;13(4):44-7.

OBJECTIVE: Postoperative atrial fibrillation (AF) is still frequent complication after coronary bypass surgery in spite of the improvements in the surgical procedures. There is still controversy whether or not, the absence of cardiopulmonary bypass results in lower incidence of AF. METHODS: One hundred and fifty one patients that underwent revascularization by a single surgeon were included in this retrospective study and the patients were divided in two groups. Group I included 74 patients who underwent complete revascularization with cardiopulmonary bypass(CBP group) and group II consisted of 77 patients who underwent complete revascularization without cardiopulmonary bypass (OPCAB group). The incidence and predictive perioperative factors of AF in two groups were determined and compared. RESULTS: There were no significant differences between Iwo groups with respect to the preoperative demographic characteristics of the patients. The incidence of postoperative AF was determined as 2.8% after CBP and 0.7% after OPCAB revascularization. Avoiding cardiopulmonary bypass did not significant impact on the incidence of postoperative AF. The rates of AF in both. groups were decreased by using fi- blocker post operatively (P=0.05 in group I, P<0.001 in group II). CONCLUSION: There is not much difference of AF rate. between CBP and OPCAB strategies. However prophylactic b-blocker usage post operatively decreases the incidence of AF after both on-pump and off-pump myocardial revascularization.

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