定压控制通气模式下有创呼吸机峰值压力差异对重症患者的潜在风险分析

Analysis on potential risk of critical patients due to the difference of airway peak pressure of invasive ventilator in pressure controlled ventilation mode

目的:通过测试分析不同品牌型号的有创呼吸机在定压控制通气模式下的气道峰压,揭示其气道峰压的差异以及由此可能对重症患者造成的潜在威胁。方法:利用呼吸阻力和顺应性可调的成人模拟肺作为有创呼吸机的负载,测试各品牌型号呼吸机在定压控制通气模式下的气道峰压。结果:通过分析发现,各品牌型号有创呼吸机其气道峰压在定压控制通气模式下存在差异。结论:对重症患者而言,如果忽视各品牌型号有创呼吸机之间的气道峰压差异,将有可能对重症患者造成潜在威胁。

Objective： To reveal the difference of airway peak pressure of different brands and models invasive ventilator in our hospital through test and analysis, and reveal that the difference might bring potential threat to the critical patients. Methods： Using adult simulated lung with adjustable respiratory resistance and compliance as the load of invasive ventilator to measure airway peak pressure of invasive ventilator in constant pressure controlled ventilation mode. Results： The results showed that the measured ventilators surely have differences in airway peak pressure in constant pressure controlled ventilation mode. Conclusion： For severe patients, if we ignore the peak airway pressure difference between invasive ventilators, there may be a threat to the critical patients.