心律紊乱 “心律紊乱”或“心律不齐”等词的含义偏重于表示节律的失常,心律失常既包括节律又包括频率的异常,更为确切和恰当。 正常心律起源于窦房结,频率60次~100次/min(成人),比较规则。窦房结冲动经正常房室传导系统顺序激动心房和心室,传导时间恒定(成人0.12~1.21秒);冲动经束支及其分支以及浦肯野纤维到达心室肌的传导时间也恒定(<0.10秒)。
山楂的叶子和花有助于改善心律紊乱。
The leaves and flowers of the hawthorn promote irrigation and fight heart rhythm disorders.
患者所显现出的最严重的症状是低血压和心律紊乱。
Patients with some of the severest symptoms suffer from low blood pressure and have difficulty regulating their heartbeat.
同时发现14例有心律紊乱占6%, 房性早搏占多数。
The occurrence of fetal cardiac arrhythmia was 14 cases (16 % ), with the majority of atrial premature beat.
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