Study on the correlation between neonatal weight and the length of central venous catheter inserted through the great saphenous vein
LIU Xiaoen
ZHANG Xingjuan
LI Man
Abstract：Objective To analyze the correlation between newborn weight and the length of central venous catheter inserted through the great saphenous vein.Methods A total of 98 newborns requiring peripherally inserted central catheter(PICC)line catheterization from October 2023 to June 2024 were selected as the research subjects.They were divided into≤0.9 Kg(n=20),0.9-1.2 Kg(n=41)and 1.2-1.5 Kg(n=37)groups.Each group was further randomly divided into two subgroups for body surface measurement positioning and newborn weight combined with body surface positioning.The length of central venous catheter inserted through the great saphenous vein in newborns of different weights was recorded.The correlation between newborn weight and the length of central venous catheter inserted through the great saphenous vein was illustrated.Puncture situation,incidence of complications,catheter tip position,and catheter maintenance time under different body weights and positioning methods were compared.Results Compared with newborns weighing≤0.9Kg,those weighing0.9-1.2 Kg and 1.2-1.5 Kg had significantly longer central venous catheter length(P<0.05).Compared with newborns weighing0.9-1.2 Kg,those weighing 1.2-1.5 Kg had a significantly longer central venous catheter length(P<0.05).The weight of newborns was positively correlated with the length of central venous catheters inserted through the great saphenous vein(P<0.05).Compared with the body surface measurement and positioning of newborns with body weight≤0.9 Kg,those weighing 0.9-1.2 Kg and 1.2-1.5 Kg had significantly higher success rate of a single puncture combined with body surface positioning and the optimal position of the catheter tip,and shorter duration of successful puncture and catheter maintenance(P<0.05).The incidence of complications between the two positioning methods was comparable of newborns among the three body weight groups(P>0.05).Conclusion The weight of newborns is positively correlated with the length of central venous catheters inserted through the great saphenous vein.The use of weight combined with surface positioning method for catheter placement in newborns results in ideal puncture results,shorter catheter maintenance time,and a higher proportion of optimal catheter tip positions.
Keywords：newbornweightgreat saphenous veincentral veintube lengthcorrelation
Publication Date：2026-02-26
Online Publishing Date：2026-03-23(First online date of this platform, not the publication date of the document)
Pages：4( 279-282 )