Baroreflex activity change after pulmonary vein isolation in patients with atrial fibrillation

Aim . To study the intraprocedural changes in baroreflex activity after catheter pulmonary vein isolation paroxysmal atrial fibrillation patients. Methods. From October 2021 to June 2022, sinus rhythm was registered at start of procedure 21 patients with admitted for isolation. Patients before and were tested phenylephrine. Pre- postoperative rate analyzed. Results. After isolation, decreased from 5.8 [3.5; 11.3] ms/mmHg 0.3 [-0.1; 1.8] ms/mmHg, р<0.001, based on systolic arterial pressure, 9.5 [5.1; 15.5] 0.6 [0; 7.6] p=0.033, diastolic pressure. Conclusion. Intraprocedural phenylephrine test allows assess modification cardiac autonomic innervation.