Zhou Juan, Liu Guangrong, Wang Weidong, Cao Desen, Zhou Junrong
Medical Support Division of PLA General Hospital, Beijing 100853, China.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2010 Oct;27(5):1025-9.
Filter pass-band settings have impact not only on ECG output amplitude, but also on output signal wave-form of some types of digital electrocardiograph. Lower cut-off frequency is decided by Wander filter setting for some types of digital electrocardiograph, and higher cut-off frequency is decided by muscle filter when muscle filter functionality is "on". We research into various filter settings' impact on the output of digital electrocardiograph and have discussions on the malfunctions found in digital electrocardiograph measurement.
滤波器通带设置不仅会影响心电图输出幅度，还会对某些类型数字心电图机的输出信号波形产生影响。对于某些类型的数字心电图机，较低截止频率由漂移滤波器设置决定，当肌肉滤波器功能“开启”时，较高截止频率由肌肉滤波器决定。我们研究了各种滤波器设置对数字心电图机输出的影响，并对数字心电图机测量中发现的故障进行了讨论。
