关键词: 皮下隧道；心腔内电图；PICC；并发症, 护理

Abstract: Objective: To explore the effect of PICC placement by subcutaneous tunnel method in the upper arm of patients with tumor. Methods: A total of 311 patients with malignant tumor who underwent PICC implantation in a Class A tertiary hospital in Henan Province from March 2019 to June 2021 were included， and were divided into the control group (156 cases) and the experimental group (155 cases) according to the random number table method. The experimental group adopted the subcutaneous tunneling technique to place PICC based on the routine method，and the control group adopted the routine method. The quality of operation process and the incidence of PICC related complications were compared between the two groups. Results: The rate of successful one-time puncture and one-time catheter delivery in the experimental group were significantly higher than those in the control group, and the degree of bleeding at puncture point, infection rate at puncture point, catheter displacement rate, mechanical phlebitis, incidence of total complications with catheter, unplanned extubation rate in the experimental group were significantly lower than those in the control group（P<0.05）. There was no significant difference in operation time, pain score, intraoperative blood loss, venous thrombosis rate and catheter blockage rate between two groups（P>0.05）.Conclusion: Compared with traditional PICC catheterization, PICC placement by subcutaneous tunnel in the upper arm has a higher success rate. It can significantly reduce the incidence of puncture point infection, bleeding, phlebitis, catheter displacement and unplanned extubation without aggravating the amount of bleeding and the degree of pain.

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