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Randomized Controlled Trial
. 2011 Jun;11(4):305-9.
doi: 10.5152/akd.2011.080. Epub 2011 May 5.

N-3 polyunsaturated fatty acids administration does not reduce the recurrence rates of atrial fibrillation and inflammation after electrical cardioversion: a prospective randomized study

Mehmet Ozaydın  1 , Doğan Erdoğan, Senol Tayyar, Bayram Ali Uysal, Abdullah Doğan, Atilla Içli, Emel Ozkan, Ercan Varol, Yasin Türker, Akif Arslan
Affiliations
Randomized Controlled Trial

N-3 polyunsaturated fatty acids administration does not reduce the recurrence rates of atrial fibrillation and inflammation after electrical cardioversion: a prospective randomized study

Mehmet Ozaydın et al. Anadolu Kardiyol Derg. 2011 Jun.

Abstract

Objective: The purpose of the present prospective randomized study was to evaluate the effects of n-3 polyunsaturated fatty acids on recurrence rates of atrial fibrillation (AF) and inflammation after electrical cardioversion.

Methods: Calculation of the number of patients needed was based on the assumption of 20% and 65% chance of maintaining sinus rhythm with amiodarone and with polyunsaturated fatty acids, respectively. To observe a significant difference with an alpha level of 0.05 and a power of 0.80 it was necessary to include 22 patients in each group. A total of 47 patients were randomized to amiodarone (n=24) and amiodarone plus n-3 polyunsaturated fatty acids (n=23) groups before scheduled electrical cardioversion. The end-point was the recurrence of AF during 12-month follow-up. Effect of n-3 polyunsaturated fatty acids on inflammation was evaluated with high sensitivity C-reactive protein level measurements. Statistical analysis was performed using unpaired Student' t, Mann Whitney U and Chi-square tests. We analyzed the recurrence of AF using the Cox proportional hazards regression model to control for potentially confounding factors.

Results: Nine patients in the amiodarone group (37.5%), and 9 patients in the amiodarone plus n-3 polyunsaturated fatty acids group (39.1%) had recurrence of AF during follow-up (p=1). With the Cox proportional model, risk factors for the recurrence of AF were previous electrical cardioversion (HR 10.33, 95% CI 1.74 to 61.10, p=0.01) and high sensitivity C-reactive protein levels (HR 1.07, 95% CI 1.02 to 1.38, p=0.007). High sensitivity C-reactive protein levels at baseline, at day 15 and during AF recurrence were similar between two groups (p > 0.05 for all).

Conclusion: N-3 polyunsaturated fatty acids administration does not reduce the recurrence rates of atrial fibrillation and inflammation.

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