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Korean J Anesthesiol. 2009 Sep;57(3):358-360. Korean. In Vitro.
Jeong CI , Lee SI , Ahn YH , Kim JY , Kim KT , Park JS , Kim JW .
Department of Anesthesiology and Pain Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea.

Heat-moisture exchanger (HME) is an inexpensive and effective device used to prevent respiratory complications that can be caused by endotracheal tube insertion during general anesthesia. But, HME can increase airway resistance and be occluded by the patient's secretions. Whether a HME could be occluded by clear fluids such as condensate in the airway circuit is not certain yet. In vitro, a case of HME occlusion by normal saline was reported. We report a case of HME obstruction by distilled water came from the heated wire circuit which was unintentionally connected to the HME.

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