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目的比较压力支持通气（ＰＳＶ）和同步间歇指令通气（ＳＩＭＶ）的临床应用。方法对２２例需要辅助通气的危重患者予ＰＳＶ和ＳＩＭＶ、观察分钟通气量（ＭＶ）、潮气量（ＶＴ）、呼吸频率（ｆ）、气道峰值压力（ＰＩＰ）、动脉血氧分压（ＰａＯ２）、二氧化碳分压（ＰａＣＯ２）及动脉血氧饱和度（ＳａＯ２）、心率（ＨＲ）、平均动脉压（ＭＡＰ）、人机对抗情况。结果ＭＶ、ＶＴ、ｆ、Ｐａ－ＣＯ２、ＰａＯ２、ＨＲ、ＳａＯ２，ＭＡＰ在两者无明显差异（Ｐ＞０．０５），但ＰＳＶ时ＰＩＰ明显降低，人机对抗少（Ｐ＜０．０１）。结论ＰＳＶ优于ＳＩＭＶ。
Objective To compare the clinical application of pressure support ventilation (PSV) and synchronized intermittent mandatory ventilation (SIMV). Methods Twenty-two critically ill patients in need of assisted ventilation were given PSV and SIMV. The effects of minute ventilation, tidal volume, respiratory rate, PIP, ), Partial pressure of carbon dioxide (PaCO2), arterial oxygen saturation (SaO2), heart rate (HR), mean arterial pressure (MAP) and man-machine confrontation. Results There were no significant differences in MV, VT, f, Pa-CO2, PaO2, HR, SaO2 and MAP between the two groups (P> 0.05) . Conclusions PSV is superior to SIMV.