Objective: To explore the safety suction method for adult acute respiratory distress syndrome ( ARDS) patients who received mechanical ventilation. Methods: Forty ARDS patients who received mechanical ventilation by implementation of artifical airway were randomly divided into experimental and control groups,20 cases in each group. The patients in experimental group were performed with closed endotracheal suction by the tee tubes without offline and the patients in control group were performed common open style suction. The variations of partial pressure of oxygen in artery ( PaO2 ) , arterial oxygen saturation ( SaO2 ) , heart vatel ( HR) , diastolic blood pressure ( DBP) and systolic blood pressure ( SBP) were monitored in each group. Results: In control group after endotracheal suction, the levels of SaO2 and PaO2 were decreased, the levels of SBP and HR were increased ( P 0. 05 ) . In experimental group after endotracheal suction, there had no significant changes of the levels of SaO2,PaO2 and DBP,HR and SBP were decreased ( P > 0. 05 ). Compared with control group, the changes of PaO2 and SaO2 had significant differences in experimental group ( P 0.05);观察组吸痰后PaO2、SaO2、DBP较吸痰前变化差异无统计学意义(P>0.05),HR、SBP均明显降低(P<0.01);2组吸痰前后PaO2、SaO2变化的差异均有统计学意义(P<0.01).结论:应用三通管不脱机密闭式吸痰能降低ARDS机械通气患者由吸痰引起的低血氧水平,维持血流动力学稳定.
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