[Pilot experience with implantations of 100 continuous atrial pacemakers in sick sinus syndrome: advances, problems, prospects].

Long-term results of continuous atrial pacing were assessed in 100 patients with sick sinus syndrome followed up for 6 years. Implantation of the pacemaker was performed via extrapleural and extraperitoneal approaches using serial myocardial non-suture electrodes. Antiarrhythmic efficacy of atrial pacing was found insufficient. Continuous atrial pacing proved advantageous only in Wenckebach point at 100-120 per min.