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正确制定心电图改变由正常妊娠所致、抑或由并发心肌障碍所致,对治疗、預后均有重要意义,現就有关文献作一概述。 (一)妊娠期正常心电图所見: 妊娠期因横膈上升,心脏位置改变,可出現Q_3及向下的T_3波,在妊娠后半期多見,Q_3約占正常孕妇之5%、T_(V_4)倒置約占8%,与心肌疾患无关;偶可发生机能性心律紊乱包括期外收縮及陣发性房性心动过速,机轉未明。Evans曾报告妊娠期正常心脏出現完全性房室传导阻滞,而Eschbach等則认为应
The correct development of ECG changes caused by normal pregnancy, or caused by concurrent myocardial infarction, the treatment, prognosis is of great significance, the relevant literature is now an overview. (A) during pregnancy normal ECG seen: due to the rise of the diaphragm during pregnancy, changes in cardiac position, there Q_3 and downward T_3 wave, more common in the second trimester of pregnancy, Q_3 about 5% of normal pregnant women, T_ (V_4) Inverted about 8%, and heart disease has nothing to do; even can occur functional arrhythmias including extrasystolic and paroxysmal atrial tachycardia, the mechanism is unknown. Evans once reported that there was complete atrioventricular block in a normal heart during pregnancy, whereas Eschbach et al.