目的：探讨导管交换技术在经鼻型肠梗阻导管置入术中的应用。方法：选取安徽省天长市中医院及东南大学附属中大医院行肠梗阻导管置入的19例肠梗阻患者，经鼻腔送入2.6 m 0.035 in （1 in＝2.54 cm）交换导丝及1.0 m 5 F单弯导管，在导丝引导下将导管越过幽门及曲氏韧带送入空肠内，撤出单弯导管，沿交换导丝送入5 F导引导管，撤出交换导丝。沿5 F导引导管引入肠梗阻导管套件内的导丝，撤出导引导管，沿导丝引入肠梗阻导管，直至空肠内10 cm以上。记录总的操作时间、透视时间和并发症情况。结果：全部患者肠梗阻导管均顺利置入，手术成功率100%。平均操作时间（25.1±9.2） min，平均X线曝光时间（12.8±6.8） min。无严重并发症出现。14例患者经肠梗阻导管置管后症状好转，无需进一步手术治疗。结论：采用5 F导引导管进行导管交换技术放置经鼻型肠梗阻导管手术成功率高，对恶性肠梗阻患者减压安全有效。

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