[Use of dynamic transesophageal electric stimulation of the heart in patients with functional disorders of the sinoatrial node].

Transesophageal pacing used for sinus dysfunction detection in 103 patients has been assessed for informative appropriateness in design of the attendance policy and efficacy of outpatient chemotherapy. The response control by electrophysiological monitoring was performed in 22 patients with true sick sinus syndrome (group 1) and 27 ones with sinus dysfunction (group 2). The rest patients were not controlled objectively. Transesophageal pacing of 5 group 1 patients brought about indications for surgical treatment. For 8 patients the follow-up revealed evolution of the sinus vegetative dysfunction into organic lesion which required surgical intervention in one case. The effect of chemotherapy with sympathomimetic drugs in adequate doses tended to reduction with increasing duration of the follow-up. In those with true sick sinus syndrome this process ran more actively. Long-term chemotherapy for sinus dysfunction is found effective as it warrants appreciable improvement of sinoatrial conduction, outpatient therapy control by dynamic transesophageal pacing is objective and can be recommended as adequate.