Electrophysiological changes in the conducting properties of fast pathway following modification of the slow pathway of the atrio ventricular node for atrio ventricular nodal re-entrant tachycardia
| Autor: | Imran Khan, Bakhtawar Shah |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Tachycardia
medicine.medical_specialty Fast pathway Cardiac electrophysiology business.industry medicine.medical_treatment Electrophysiological changes Effective refractory period Non inducibility General Medicine Ablation Electrophysiology Internal medicine cardiovascular system medicine Cardiology AVNRT Original Article Atrio ventricular node medicine.symptom Slow Pathway modification NODAL business |
| Zdroj: | Pakistan Journal of Medical Sciences |
| ISSN: | 1681-715X 1682-024X |
| DOI: | 10.12669/pjms.35.5.473 |
| Popis: | Objectives: To determine the possible changes in the conducting properties of the fast pathway after modification of the atrioventricular slow pathway for AVNRT which leads to the failure of the induction of tachycardia. Methods: This study was conducted in the Cardiac electrophysiology Laboratory of Hayatabad Medical Complex, Peshawar, Pakistan from March 2017 to March 2018. All the patients underwent radiofrequency modification of the slow pathway for AVNRT. Patients in whom typical AVNRT was inducible with demonstration of dual AV nodal physiology were included in the study. Results: A total of 171 cases were included in the study, 42 (25%) were males, mean age recorded was 47±15 years. There were no significant changes pre and post ablation in the base line parameters like VV interval, atrioventricular nodal (AV nodal) Wenckebach cycle length, slow pathway effective refractory period (SPERP) or fast and slow pathways maximal Atrio His interval. However significant change was observed in the effective refractory period of the fast pathway 350±49 Vs 290±32 (p value 0.0001). The difference between slow and Fast pathway ERP was also decreased significantly 82±36 Vs 56±24 (p value 0.004). Conclusion: Our study showed that ablation of AV nodal slow pathway for atrioventricular nodal reentrant tachycardia leads to changes in the effective refractory period of the fast pathway. doi: https://doi.org/10.12669/pjms.35.5.473 How to cite this:Khan I, Shah B. Electrophysiological changes in the conducting properties of fast pathway following modification of the slow pathway of the atrio ventricular node for atrio ventricular nodal re-entrant tachycardia. Pak J Med Sci. 2019;35(5):1301-1305. doi: https://doi.org/10.12669/pjms.35.5.473 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Databáze: | OpenAIRE |
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