Effects of Continuous Enhanced Vagal Tone on Dual Atrioventricular Node and Accessory Pathways
| العنوان: | Effects of Continuous Enhanced Vagal Tone on Dual Atrioventricular Node and Accessory Pathways |
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| المؤلفون: | Eric N. Prystowsky, Mau Song Chang, Ming-Ho Kung, Shih Ann Chen, Chuen-Wang Chiou |
| المصدر: | Circulation. 107:2583-2588 |
| بيانات النشر: | Ovid Technologies (Wolters Kluwer Health), 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | Adult, Tachycardia, medicine.medical_specialty, Time Factors, Refractory period, Electrocardiography, Phenylephrine, Heart Conduction System, Parasympathetic Nervous System, Physiology (medical), Internal medicine, Tachycardia, Supraventricular, medicine, Humans, Tachycardia, Atrioventricular Nodal Reentry, Vagal tone, business.industry, Cardiac Pacing, Artificial, Effective refractory period, Vagus Nerve, Middle Aged, medicine.disease, Atrioventricular node, Vagus nerve, medicine.anatomical_structure, Anesthesia, Atrioventricular Node, Catheter Ablation, Cardiology, medicine.symptom, Electrophysiologic Techniques, Cardiac, Cardiology and Cardiovascular Medicine, business, AV nodal reentrant tachycardia, medicine.drug |
| الوصف: | Background— The aim of this study was to test the electrophysiological effects of continuous enhanced vagal tone on dual atrioventricular (AV) nodal and accessory pathways. Methods and Results— This study included 10 patients with typical, slow-fast AV nodal reentrant tachycardia (AVNRT) and 10 patients with AV reciprocating tachycardia. Electrophysiological data were measured before and during continuous vagal enhancement by using phenylephrine infusion (0.6 to 1.5 μg/kg per min). For patients with AVNRT, during phenylephrine infusion, 1:1 conduction times over the anterograde fast and slow and retrograde fast pathways were prolonged (453±64 to 662±120 ms, P P P P P Conclusions— Enhanced vagal tone produces disparate effects on the refractoriness of the slow and fast AV nodal conduction pathways, with the anterograde fast pathway being the most sensitive. These changes are conducive to induction of AVNRT with a premature atrial complex and may explain in part the relatively common occurrence of AVNRT during sleep or other periods of presumed increased parasympathetic tone. |
| تدمد: | 1524-4539 0009-7322 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16da585c0191e4afbad4c4cdd58d75ac https://doi.org/10.1161/01.cir.0000068339.04731.4d |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....16da585c0191e4afbad4c4cdd58d75ac |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15244539 00097322 |
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