Normal Unidirectional block Block
accessory pathway Abnormal conduction pathway of Wolff-Parkinson-White syndrome
Abnormal conduction pathway of Wolff-Parkinson-White syndrome
B. Electrophysiological effects and classification of antiarrhythmic drugs D 1. Electrophysiological effects ofantiarrhythmic dh rugs u (1) Reducing abnormal automaticity decreasing phase 4 slope increasing thresold levels increasing MDP levels in phase 4 increasing action potential duration (APD
B. Electrophysiological effects and classification of antiarrhythmic drugs 1. Electrophysiological effects of antiarrhythmic drugs (1) Reducing abnormal automaticity decreasing phase 4 slope increasing thresold levels increasing MDP levels in phase 4 increasing action potential duration（APD）
A decreased phase D A. decreasing phase 4 slope B increased I B. increasing thresold levels threshold u C increasing MDP levels in C phase 4 increased maximum diastolic potential U D. increasing action potential duration( APD) fast response cells baseline drug effect
A. decreasing phase 4 slope B. increasing thresold levels C. increasing MDP levels in phase 4 D. increasing action potential duration（APD） fast response cells
20 间电位 b b decreasing pl hase 4 slope Slow response 100毫秒 cel s 20 电位-2 0 B 电位工 c increasing thresold levels: d increasing MDP
b. decreasing phase 4 slope c. increasing thresold levels；d. increasing MDP Slow response cells