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目的 :探究负压隔离舱在空中转运过程中内外压差的变化情况,分析其性能的稳定性,确保用其空中转运烈性呼吸道传染患者过程中,医护人员不被传染。方法:采用卫生装备研究所自行研制的自带实时记录功能的压差监测仪,测量飞机飞行5个阶段中负压隔离舱内外气压变化情况,最终判断负压隔离舱在空中转运过程中能否安全运行及需要注意的因素。结果:空中转运过程中舱内负压最大值为-60 Pa,最小值为-120 Pa,远低于安全压力-15 Pa,并且飞行过程中舱内负压与高度呈正比。结论:负压隔离舱在空中转运伤病员过程中可有效保持负压状态,可为空中转运传染病员提供有力的技术支持。
OBJECTIVE: To investigate the variation of pressure differential between inside and outside of negative pressure cofferdam during airborne transit, and to analyze the stability of its performance to ensure that medical workers are not infected during the airborne pneumonia. Methods: By using the self-developed pressure-difference monitor with real-time recording function of the Institute of Health Equipment, the changes of air pressure inside and outside the negative pressure cabin during 5 stages of flight were measured to determine whether the negative pressure cabin could be transported in air during transport Safe operation and need to pay attention to the factors. Results: The maximum value of negative pressure in the air during transhipment was -60 Pa and the minimum value was -120 Pa, much lower than the safety pressure of -15 Pa. The negative pressure in the cabin was directly proportional to the altitude during flight. Conclusion: Negative pressure cofferdam can effectively maintain the negative pressure during the airborne transport of the wounded and sick, which can provide strong technical support for airborne transmission of infectious diseases.