[Relation of parameters of frequent transesophageal electric stimulation of the atria during the treatment of atrial flutter and electrophysiologic characteristics of the myocardium].
After arresting paroxysms with frequent transesophageal cardiostimulation (TECS), 20 patients with coronary heart disease accompanied by episodes of Type 1 atrial flutter (AF) were studied by using a technique of intracardiac electrophysiological examination. The length of the atrial cycle in AF was found to correlate with that of successful TECS (r = 0.83). The correlation increases when a difference of atrial functional and effective refractory periods is subtracted from the length of the atrial cycle in tachycardia (r = 0.92). The equations of simple and multiple linear regression were derived, which defined the optimal frequency parameters of stimulation with a sufficient accuracy to stop Type I AF episodes. The efficacy of frequent TECS in arresting 324 spontaneous AF episodes was 92.9%.
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D000328:Adult; D001282:Atrial Flutter / Q000503:physiopathology / Q000628:therapy*; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D004947:Esophagus; D006325:Heart Atria / Q000503:physiopathology; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis
Zavisimos't mezhdu parametrami chastoĭ chrespishchevodnoĭ élektro- stimuliatsii predserdiĭ pri kupirovanii trepetaniia i élektro- fiziologicheskimi kharakteristikami miokarda.