• Juan Wu, Jingjing Li, Hua Li, Xinyun Lei, and Huan Liu.
• Neonatal Department, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
• Int. J. Clin. Pract. 2021 Jul 1; 75 (7): e14210.

AimsWhether PICC in newborns can improve its success rate and reduce the complications by using the formula method to calculate the depth of catheterisation.MethodsA total of 130 newborns were prospectively studied from December 2018 to December 2019. All newborns were randomly divided into two groups that use formula method and common method respectively. The PICC catheter length of the two groups was observed. The unplanned extubation rate, one-time puncture success rate, catheter indwelling time, complications, duration of hospital stays and pain scores were recorded during the whole research process and compared between these two groups.ResultsThe formula method significantly improved the puncture success rate and reduced the secondary adjustment rate. The length of the catheter adjustment was significantly lower than the control group. The retention time also increased significantly. The incidence of PICC-related complications, including phlebitis, thrombosis, catheter-related infection and catheter displacement, was significantly reduced by using the formula method.ConclusionsThe formula method in neonatal PICC catheter had great outcomes in terms of improving the success rate of one-time puncture and prolonging the indwelling time of catheter.© 2021 John Wiley & Sons Ltd.

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