Abstract：ObjectiveTo determine the atrioventricular conduction function and its influential factors by measuring electrophysiological parameters of atrioventricular conduction system with transesophageal atrial pacing(TEAP). MethodsOne hundred and twentyfour patients were enrolled in the research and carried out inspection of TEAP. Among those patients, some underwent examination of functions of atrioventricular conduction and atrionector because of bradycardia while some were diagnosed with sychnosphygmia. All selected patients had taken routine and ambulatory electrocardiography before TEAP, with antiarrhythmic drugs withdrawn for 5 halflife periods. Seventyfour patients whose function of atrioventricular conduction had decreased after TEAP were enrolled in the atropine tests and made a contrast analysis before and after.ResultsThe detection rate of atrioventricular conduction of TEAP was significantly higher than that inspected by routine and ambulatory electrocardiography. After intravenous injection of atropine, 69 cases improved significantly while 5 cases seemed no obvious improvement and switched to pacemaker implantation. Besides, atrioventricular nodal reentrant tachycardia was induced from 1 case after intravenous injection of atropine.ConclusionsTEAP has important clinical value in early detection and differential diagnosis of functional or pathological atrioventricular block.
2014, Vol. 23 
