Objective: Utilizing the noninvasive heart function monitor to choose the best positive end expiratory pressure (PEEP) for the respiratory failure patients with unstable haemodynamics.
目的：研究利用无创心功能监测仪辅助对血流动力学不稳定呼吸衰竭病人选择最佳呼气末正压（PEEP）。
NPPV was delivered to the patient by a face mask connected to a ventilator set in pressure support ventilation (PSV) and positive end-expiratory pressure (PEEP).
在进行标准治疗同时加用NPPV。 面罩连接呼吸机，通气模式采用压力支持通气（PSV）加呼气末正压（PEEP）。
Objective To research the suitability of using positive end-expiratory pressure (PEEP) to treat severe asthma and to explore the ideal value of PEEP.
目的探讨使用呼气末正压（PEEP）治疗重症哮喘的适应性及理想PEEP。
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