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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
N/A 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.
메시지 패싱 멀티프로세서 컴퓨터의 운영체제 설계 및 구현
권택진(Kwon Taek Jin),전익성(Jeon Ick Seong),이민석(Lee Min Seok),김종상(Kim Chong Sang) 한국정보과학회 1990 한국정보과학회 학술발표논문집 Vol.17 No.2
고도의 연산처리 능력을 요구하는 응용이 증가함에 따라 CPU의 능력을 개선시키는 연구와 더불어 여러개의 CPU를 사용하는 다중처리기 시스템에 관한 연구가 활발히 진행되고 있다. 이번 연구는 현재 개발 중인 message passing 멀티프로세서 시스템에서 구동될 운영체제 개발에 뜻을 두고 있다.
김진일,김재형,김종진,이만영,김종상,홍순조,최종영,김희열,최규보,노태호 대한내과학회 1995 대한내과학회지 Vol.48 No.1
Intraatrial reentrant tachycardia (IART) which accounts for less than 5% of the cases of clinical supraventricular tachycardia (SVT), can be induced and terminated by programmed electrical stimulation. Ventricular activation occurs via the AV node, thus narrow QRS complexes follow the P waves, which conduct antegrade and are of different contour from the sinus P wave. The IART has a rate ranging from 100 to 150 bpm. Although it is generally regular, AV block may cause irregularity without interrupting the tachycardia. The presence of organic heart disease with or without atrial enlargement in these patients suggests that diseased atrial tissue and/or stretched atrium might predispose to paroxysmal atrial tachycardia. An IART generally responds to treatment with type Ia antiarrhythmic agents. Transesophageal atrial pacing (TAP) can be used to induce and terminate SVT for diagnostic or therapeutic purposes and provides a convenient way to access repeatedly the efficacy of long-term drug therapy and to screen patients for preexitation syndromes. This technique offers virtually noninvasive access to the atrium: it can be performed in an outpatient setting with minimal discomfort. We report a case of intraatrial reentrant tachycardia in a 54-year-old woman that was reproducibly induced and terminated by TAP with a brief review of literature.