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管路漏气对无创机械通气影响的研究 被引量:26

Adverse infuence on air leak of non-invasive positive pressure ventilation
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摘要 目的探讨无创机械通气时管路漏气量对患者通气的影响及护理对策。方法在呼吸机管路上串联1~3个平台型呼气阀,对漏气量进行定量控制,以呼吸力学监测装置连续监测管路内的流速、压力、容量变化。结果随着漏气量逐渐增加,受试者吸气流速曲线相应延长,吸-呼气时间比出现异常(>1∶2),产生切换延迟。漏气级别越大,出现人-机不协调现象越多。结论切换延迟与漏气密切相关,漏气量越大切换延迟越多见。切换延迟可导致人-机不协调,甚至导致过度通气和呼吸功能的恶化,应引起护理人员的高度重视。
出处 《中华护理杂志》 CSCD 北大核心 2007年第9期805-806,共2页 Chinese Journal of Nursing
关键词 通气机 机械 正压呼吸 设备失效 护理 Ventilators, mechanical Positive-pressure respiration Equipment failure Nursing care
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