引导呼吸下的呼吸性窦性心律不齐的研究

Research on the Respiratory Sinus Arrhythmia in the Process of Guided Breathing

研究渐进性引导呼吸对呼吸性窦性心率不齐(RSA)的影响。对15名健康成年男性采集引导呼吸率依次为【14次/min—12.5次/min—11次/min—9.5次/min—8次/min—7次/min】状态下的同步心电、呼吸信号,采用提取RSA时、频特征参数的方法来研究渐变性呼吸率对RSA的影响。计算结果显示:表征RSA强度的三个特征参数总体上随着呼吸率的逐渐降低均呈现出增大的变化趋势。RSA代表着呼吸系统对心血管系统的反射调控,此实验结果表明,随着呼吸率的降低,呼吸系统对心血管系统的反射调控作用逐渐增加,提示可通过改变呼吸模式来改善心血管系统的功能。

To investigate the effects of gradually guided breathing on respiratory sinus arrhythmia（RSA）,15 healthy men＇s simultaneous ECG and respiratory signals during the guided breathing process（14 beats/min—12.5 beats/min—11 beats/min—9.5 beats/min—8 beats/minute—7 beats /min）were acquired.Based on the frequency domain and time domain methods,the effects of respiratory rate on RSA were studied.A general tendency increase features the three parameters of RSA as respiratory rate decreased.RSA represents the reflection control of respiratory system to cardiovascular system.The results suggested that the function of the reflection control of respiratory system to cardiovascular system increaseed with guided breathing decreasing.The conclusion indicates that the cardiovascular system could be improved by regulating the mode of respiration.