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- W2351417535 abstract "Purpose To analyze the electrophysiological characteristics and prognosis of the significantly prolonged atrio-ventricu-lar effective refractory period(AVERP) caused by high parasympathetic tone. Methods We chose 21 cases (7. 4%) with long AVERP from 284 patiens and analyzed them before and after atropine test as well as 3 - 8 years' follow up. Results The Wenckebachs AV block rate and 21 AV block rate of all patients was significantly lowered(98±12)bpm and (145±13)bpm respectively) and the AVERP prolonged(502±38)ms. 19 cases demonstrated and A-H delay or A-H block during atrial pacing. The ability of AV conduction was obviously improved after intravenous injection of atropine (P0. 01). The Wenckbachs',2:l block rate and AVERP were (148±27)bpm,170 bpm and (224±34)ms respectively. The electrophysiological characteristics of follow up periods had no significant difference with that of before atropine test. Only 2 patients implanted pacemakers because of dizziness and fatigue. Conclusion The vagus induced long AVERP is a common clinical phenomenon but often being neglected. The AV delay is located above His band so that it can be controlled by the vagal activity. Although there is a trend of even longer AVERP during follow up periods,the prolonged ERP is a functional conduction phenomenon and have a benign prognosis." @default.
- W2351417535 created "2016-06-24" @default.
- W2351417535 creator A5042016544 @default.
- W2351417535 date "1999-01-01" @default.
- W2351417535 modified "2023-09-26" @default.
- W2351417535 title "The prognosis and characteristics of significantly prolonged atrio-ventricular refractory in patients with high parasympathetic tone" @default.
- W2351417535 hasPublicationYear "1999" @default.
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