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Chirurgia 2007 April;20(2):65-7


language: English

Lack of biochemical repercussion of radiofrequency ablation modified maze procedure concomitant with mitral valve replacementTorrado H., Farrero E., Granados J., Javierre C., Rodríguez D., Carrió M. L., Castells E., Ventura J. L.

Torrado H. 1, Farrero E. 1, Granados J. 2, Javierre C. 3, Rodríguez D. 1, Carrió M. L. 1, Castells E. 1, Ventura J. L. 1

1 Critical Care Service, Hospital Universitari de Bellvitge, Barcelona, Spain 2 Cardiac Surgery Service Hospital Universitari de Bellvitge, Barcelona, Spain 3 Department of Physiological Sciences University of Barcelona, Barcelona, Spain


Aim. Atrial fibrillation (AF) is the most frequent cardiac arrhythmia and radiofrequency modified maze III procedure in patients with AF undergoing elective concomitant cardiac surgery offers an alternative to the complex surgical maze procedure and has been proved an effective technique to eliminate AF in the long-term. Significant troponin increases have been recorded after high-energy radiofrequency catheter ablation for supra-ventricular arrhythmias. To our knowledge, no biochemical changes produced by the maze procedure have been reported. Troponin I or CK-MB increases after cardiac surgery can induce the diagnosis of myocardial infarction or myocardial damage. The objective of the present study is to evaluate the possibility of these increases after the modified maze III procedure concomitant with mitral valve surgery.
Methods. We analiysed plasma troponin I and CK-MB at admission and at 6 hours, 12 hours, 24 hours and 48 hours later in a sample of 20 consecutive patients undergoing modified maze III procedure with concomitant mitral valve surgery (A group) and in 64 consecutive patients undergoing mitral valve surgery without ablation (NA group).
Results. We did not detect significant differences between the A and the NA groups neither in the troponin I nor in the CK-MB peaks.
Conclusions. 1) We have not detected significant biochemical increases. 2) The lack of substantial analytical impact can be attributed to the auricular target of the ablation and to a less agressive actuation than with catheters.

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