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완전 방실차단에서 His 속 전기도로 확인한 전도장애의 위치
노태호(Tai Ho Rho),이숙영(Sook Young Lee),백상홍(Sang Hong Paek),김종진(Chong Jin Kim),김철민(Chul Min Kim),김종상(Chong Jin Kim),김재형(Jae Hyung Kim),최규보(Kyu Bo Choi),홍순조(Soon Jo Hong) 대한내과학회 1992 대한내과학회지 Vol.43 No.4
Background: The His bundle recording has proved useful in determining the sites of AV conduction disturbances not discernable in the standard ECG. And the clinical behaviour of patients with conduction disturbance may be partially related to the site of block. Methods: In 27patients with complete AV block, electrophysiologic studies were done to delineate the sites of conduction block. Three multipolar electrodes were located to record the simultaneous electrograms from the right atrium, the His bundle and the right ventricle. Results & Conclusion: lnfraHis location was the most frequent site, accounting for 52% of total cases. When QRS complexes were narrower than 100msec, the localizations of block were divided between supraHis (45%) and infraHis (36%). But complete AV blcok with wider QRS complexes most often corresponded to infraHis block (75%), Mean ages of patients with supra-, intra- and infra- His block were 58, 65 and 55 respectively. All those with intrahis block were female. Definite causes of conduction disturbance were not certain in 24among 27patients. In the remaining three patients, underlying causes were acute myocardia1 infarction in two and dilated cardiomyopathy in one.