Abstract: Objective To explore the application effectiveness of electromagnetic navigation nasojejunal tube placement technology in nutritional support for critically ill neurosurgical patients,in order to provide a safe and efficient catheterization method for clinical practice. Methods Using convenience sampling,120 patients requiringenteral nutritional support admitted to the Neurosurgical Intensive Care Unit of the hospital from May 2025 to February 2026 were selected as the study subjects.They were randomly divided into an observation group and a control group,with 60 cases in each group.The observation group received nasojejunal tube placement guided by electromagnetic navigation localization,while the control group received traditional blind insertion combined with bedside X-ray confirmation and repositioning.The two groups were compared regarding the one-time success rate of tube placement,tube placement operation time,time for the catheter tip to reach the post-pyloric (ideal) position,incidence of tube-related complications,and serum albumin and prealbumin levels on the 7th day after tube placement. Results The one-time success rate of tube placement in the observation group was 96.67%(58/60),which was higher than that in the control group(75.00%,45/60),and the difference was statistically significant(χ²=11.580,P=0.001).The tube placement operation time in the observation group was (18.50±4.20) min,shorter than that in the control group(35.80±9.60) min;the time for the catheter tip to reach the ideal position in the observation group was(2.10±0.50) h,shorter than that in the control group (6.80±2.30) h,and the differences were statistically significant (t=-12.789,-15.467,both P＜0.001).On the 7th day after tube placement,the serum albumin level in the observation group was(35.20±3.80) g/L,and the prealbumin level was(210.50±42.60) mg/L,both higher than those in the control group [(32.10±3.50) g/L and (185.40±38.20) mg/L],with statistically significant differences(t=4.648,3.398,both P＜0.001).The total incidence of tube-related complications in the observation group was 5.0%(3/60),lower than that in the control group (20.0%,12/60),and the difference was statistically significant (χ²=6.171,P=0.013). Conclusion Electromagnetic navigation nasojejunal tube placement technology can significantly improve the one-time success rate of tube placement,shorten the operation time,improve early nutritional status,and demonstrates good safety,showing high clinical application value.

Key words: Electromagnetic navigation, Nasojejunal tube placement, Neurosurgery, Intensive care, Enteral nutrition

摘要： 目的 探讨电磁导航鼻肠管置入技术在神经外科重症患者营养支持中的应用效果。方法 选取2025年5月-2026年2月神经外科重症监护室收治的120例需行肠内营养支持的患者为研究对象。随机分为观察组和对照组,各60例。观察组采用电磁导航定位引导下鼻肠管置入,对照组采用传统盲插联合床旁X线调整置管。比较两组一次性置管成功率、置管操作时间、导管头端到达幽门后时间、置管相关并发症发生率,以及置管后第7天血清白蛋白、前白蛋白水平。结果 观察组一次性置管成功率为96.67%(58/60),高于对照组的75.00%(45/60),差异有统计学意义(χ²11.580,P=0.001);观察组置管操作时间为(18.50±4.20)min,短于对照组的(35.80±9.60)min;导管头端到达理想位置时间观察组为(2.10±0.50)h,短于对照组的(6.80±2.30)h,差异均有统计学意义(t=-12.789、-15.467,均P＜0.001)。置管后7 d,观察组血清白蛋白为(35.20±3.80)g/L、前白蛋白为(210.50±42.60)mg/L,均高于对照组的(32.10±3.50)g/L和(185.40±38.20)mg/L,差异有统计学意义(t=4.648、3.398,均P＜0.001)。观察组置管相关并发症总发生率为5.0%(3/60),低于对照组的20.0%(12/60),差异有统计学意义(χ²=6.171,P=0.013)。结论 电磁导航鼻肠管置入技术可显著提高神经外科重症患者一次性置管成功率,缩短操作时间,改善早期营养状况,且安全性较好,具有较高的临床推广价值。

关键词: 电磁导航, 鼻肠管置入, 神经外科, 重症监护, 肠内营养