摘要
目的通过比较Siaretron 1000型与Nuffield 200型呼吸机在不同环境压力下模拟肺的实际潮气量值，探究Siaretron1000型呼吸机在高气压下的应用。方法2款呼吸机分别在0．10、0．18、0．24、0．28和0．60MPa的环境压力下进行潮气量的测定。Siaretron 1000型呼吸机将潮气量为300、500、800ml及吸入时间百分比设为33％、40％、50％，Nuffield 200型呼吸机将吸呼比设定为1：2，潮气量分别设定为500ml，分别测定潮气量、呼吸频率及气道峰压值的变化。结果Siaretron1000型呼吸机随环境压力增加潮气量有下降趋势，0．28MPa压力以下潮气量变化〈20％；Nuffield 200型呼吸机在0．18MPa以上压力时潮气量变化均大于20％，差异有统计学意义（P〈0．05）。结论随着环境压力的升高，Siaretron 1000型呼吸机实测潮气量存在下降趋势，在一定范围内能满足机械通气的需要。
Objective To investigate the advantages of the Siaretron 1000 ventilator at high pressure and the range of tidal volume for reference through the comparison of simulated actual respiratory tidal volumes between the Siaretron 1000 and Nuffield 200 type ventilators at different ambient pressures. Methods Tidal volumes were measured with 2 different ventilators at pressures of 0. 1, 0. 18, 0.24, 0.28 and 0.6 MPa （absolute pressure）. The tidal volumes of Siaretron 1000 ventilator were set at 300, 500 and 800 ml and inspiratory time ratios were set at 33%, 40% and 50%. Respiratory ratios of Nuffield 200 ventilator were set at 1 ： 2, tidal volume at 500 ml. Then, changes in tidal volumes, respiratory rates and peak airway pressures were measured respectively. Results The tidal volumes determined with Siaretron 1000 ventilator tended to decline with the increase of environmental pressures, with statistical significance （ P 〈 0. 05 ）. Changes in tidal volumes at pressures of lower than 0.28 MPa were less than 20%, while changes in tidal volumes measured with Nuffield 200 ventilator at pressures of higher than 0.18 MPa were greater than 20%. Conclusions With the increase in ambient pressure, actual tidal volume measured with Siaretron 1000 ventilator tended to decline, which could meet the demands of mechanical ventilation to a certain extent.
出处
《中华航海医学与高气压医学杂志》
CAS
CSCD
北大核心
2012年第6期368-371,共4页
Chinese Journal of Nautical Medicine and Hyperbaric Medicine
基金
军队临床高新技术重大项目（2010GXJS023）
关键词
呼吸机
潮气量
高气压
吸入时间百分比
模拟肺
Ventilator
Tidal volume
Hyperbaric Chamber
Percentage of inspiratory time
Artificial lung
