Larry A. Chinitz, MD, on the SMART-AF trial results

SAN FRANCISCO — In this video, Larry A. Chinitz, MD, director of cardiac electrophysiology at NYU Medical Center, outlines the results of the SMART-AF trial, presented at the Heart Rhythm Society Annual Scientific Sessions.

The purpose of the trial was to assess the efficacy of contact force sensing during catheter ablation for AF. This technology, Chinitz said, allows the user to receive feedback from the catheter during ablation to determine the presence of tissue contact.

The study indicated that increased contact consistency during ablation significantly improved outcomes, while the amount of force did not significantly alter results. Chinitz said that these results confirm that consistent, prolonged contact is necessary for creating effective lesions during ablation. He added that the SMART-AF results have substantial implications for clinical practice: Even among experienced operators, good contact is difficult to determine, and the movement of the heart causes contact to be difficult to maintain.

The ability to determine the percentage of time spent in contact with the tissue, Chinitz said, may change the way that catheter ablation is performed for all arrhythmias, particularly AF.

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