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目的 探讨神经调节通气辅助模式(NAVA)在困难撤机的价值.方法 通过分析1例使用NAVA撤离呼吸机的过程,探讨NAVA在困难撤机中的作用,并结合相关文献进行讨论.结果 患者脑出血后长期上呼吸机,脱机失败,换用NAVA后,通过测定膈肌动作电位,来评估患者膈肌功能,并使用NAVA进行呼吸功能锻炼,最终成功脱机.结论 NAVA是一种较理想的接近生理通气模式,同时可以评估膈肌的功能,在困难撤机上有好的应用前景.

Objective To investigate the value of Neurally adjusted ventilatory assist mode (NAVA) in difficult weaning.Methods Discussed the value of NAVA in the difficult weaning by analyzing the weaning process using the NAVA model in one case,and then reviewed related literatures.Results The patient underwent a long-term mechanical ventilation and failure of weaning after intracerebral hemorrhage.The diaphragm function was evaluated by measuring diaphragm electrical action potential and gradually exercised after switching to NAVA mode.Finally weaning successed.Conclusions NAVA is an idealventilation mode close to physiologicaland at the same time to evaluate the function of diaphragm.It has a good application prospect in difficult weaning.