EVALUATION OF VENTRICULAR REPOLARIZATION TIME IN PATIENTS WITH BUNDLE BRANCH BLOCK AND COMPARISON OF TWO FORMULAS FOR CORRECTION OF JT INTERVAL FOR HEART RATE

作     者：张延斌 李东野 陈清枝 

作者机构：Department of Cardiology Affiliated Hospital of Xuzhou Medical College.Xuzhou 221002 China 

出 版 物：《China Medical Abstracts(Internal Medicine)》 (中国医学文摘（内科学分册（英文版）)

年 卷 期：2003年第20卷第4期

页      面：236-238页

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 08[工学] 1010[医学-医学技术（可授医学、理学学位）] 10[医学] 

主　　题：RATE applying correcting correction bundle prolonged arrhythmia branch assumed posed 

摘      要：Objective To evaluate the effects of prolongation of the QRS time on QT interval and seek for a proper formula for correction of the JT interval for heart *** QRS and QT intervals were measured in 68 patients with bundle branch block （BBB） and 50 normal control *** JT interval was derived by subtracting QRS from QT interval （JT= QT-QRS）.The QTc was obtained by applying Bazett’s formula(QTc = QT/（RR）1/2).The JTc was obtained by using JTc = JT/（RR）1/2 + QRS/（RR）1/2-QRS （ F1 ） and JTC = JT/（RR）1/2 （F2）*** The patients with BBB have a prolonged QTc interval but a normal JTc interval. The JTc obtained by applying F( was significantly different from that obtained by applying F2 ·The curve corresponding to F1 was parallel to the curve defined by Bazett’s formula, but the curve corresponding to F2 was *** Formula JTc = JT/（RR）1/2 + QRS/（RR）1/2-QRS is a better equation than JTc = JT/（RR）1/2 for correcting JT interval for heart rate