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冠心病和非冠心病患者电收缩间期(QT)延长可伴有室性心律失常和猝死发生率的增高.传统上,以心率校正的QT时间确定QT间期延长.晚近,作者证实在所有正常静息心率范围内,正常人QT间期恒短于电机械收缩时间(QS_2),并与之密切相应.QT与QS_2,在生理学上的联系可能较其与心率的联系更为密切,以QT与QS_2的关系来确定有无QT延长,可能较用心率校正QT间期更为恰当.本文
Patients with coronary heart disease and non-coronary heart disease patients with prolonged electrical contractility (QT) may be associated with increased incidence of ventricular arrhythmias and sudden death.QT time of heart rate correction to determine the QT interval extension.Recently, the authors confirmed that all In the normal rest heart rate range, the QT interval of the normal people is always shorter than that of the QS_2 (QS_2), which is closely related to the physiological relationship between QT and QS_2 QT and QS_2 relationship to determine the presence or absence of QT prolongation may be more appropriate than heart rate correction QT interval.