压力支持通气的临床应用及其对循环呼吸系统的影响

Clinical Study of Pressure Support Ventilation

对慢性阻塞性肺疾病所致呼吸衰竭患者36例,在撤除呼吸机的过程中,采用压力支持通气这一新的通气模式,并对压力支持通气引起的呼吸、循环系统变化进行了观察。结果发现,压力支持通气确有助于疲乏呼吸肌的恢复、增加潮气量、降低呼吸频率和耗氧量。对循环系统则无明显不良影响。所以,压力支持通气在撤除呼吸机的过程中不失为一种好的过渡性通气模式。

The cardiovascular & respiratory changes produced by pressure support ventilation and it's clinical use were studied in 36 spontaneously breathing patients convalescing from chronic obstructive pulmonary disease.We find there is no statistically siganificant changes occurred in the hemodynamic variables bat there is a decrease in respiratory tote(P<0.001)and an in- crease in tidal volume(P<0.001)significantly.PaO_2 and PaCO_2 remain stable.We conclude that pressure support ventilation,with it's minimal effects on the vascular system and benefi- cial effects on respiratory system,plays an important role in the process of weaning.