Clinical study of ultrasound ablation at pulmonary veins orifice in treatment to patients with paroxysmal atrial fibrillation / 中华超声影像学杂志

ABSTRACT

Objective To evaluate the clinical efficacy of circumferential ablation at orifice of pulmonary veins with ultrasound energy in the cure of paroxysmal atrial fibrillation(PAF).Methods The study group included 5 patients with PAF who had significant symptom and were drug resistance,and ultrasound ablation was applied at the orifice of their pulmonary veins to get electrical isolation.Results Nineteen pulmonary veins got electrical isolation and among them 3 were combined with radiofrequency ablation.PAF recurred in one patients and atrial premature beats occurred in other two patients but all disappeared after being treated with amiodarone.During the ablation atrial perforation occurred in one patients and severity vague response in another patient.All patients reached a minimum of six months of follow up,and remained in sinus rhythm.Conclusions The circumferential ablation at orifice of pulmonary veins with ultrasound energy is effective in restoration and maintenance of sinus rhythm in patients with PAF.