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患者女,35岁。诊断为病毒性心肌炎、心律失常、快频率依赖性左束支传导阻滞(LBBB)。心电图表现:窦性P波,顺序出现,P—R0.19秒,R—R0.72秒,心率83次/分,呈LBBB图形。压迫右侧眼球约5秒后,R—R0.93秒,P—R0.19秒,心率65次/分时,LBBB消失,转为正常室内传导。停压眼球约5秒后,R—R0.76秒,P—R0.19秒,心率79次/分时,LBBB又复出现。快频率依赖性LBBB,亦称三相性LBBB,特点为心率增快时出现LBBB图形,减慢时消失,系心
Female patient, 35 years old. Diagnosis of viral myocarditis, arrhythmia, fast frequency-dependent left bundle branch block (LBBB). ECG showed: sinus P wave, the order of appearance, P-R0.19 seconds, R-R0.72 seconds, heart rate 83 beats / min, was LBBB graphics. Oppression of the right eye about 5 seconds later, R-R 0.93 seconds, P-R 0.19 seconds, heart rate 65 beats / min, LBBB disappeared into normal indoor conduction. About 5 seconds to stop eye pressure, R-R0.76 seconds, P-R0.19 seconds, heart rate 79 beats / min, LBBB again appear. Fast frequency-dependent LBBB, also known as three-phase LBBB, is characterized by an LBBB pattern that appears when heart rate is increased, disappears when slowed,