The ECG method for positioning the tip of peripherally inserted central catheter :results of a multicenter study / 中华护理杂志

ABSTRACT

Objective To evaluate ECG-aided tip localization of peripherally inserted central catheter(PICC),and to explore the predictive value of in vitro measurement length to optimal length.Methods Convenience sampling method was used to recruit 743 patients from 18 tertiary hospitals in 11 provinces.Patients received ECG-aided tip localization during PICC placement.After PICC was inserted,orthophoria chest radiograph (OCR) was conducted to check whether the tip position of PICC was appropriate.Results Totally 624 valid questionnaires were collected.OCR showed that all tips of PICCs were located in the optimal position.The optimal length was positively correlated with in vitro measurement length (r=0.920,P＜0.01).Linear regression showed regression equation was Y(the optimal length inserted through left basilic vein)=4.290+0.897X(in vitro measurement length)(R2=0.834,F=942.459,P＜0.001),and Y(the optimal length inserted through right basilic vein)=3.097+0.922X(in vitro measurement length)(R2=0.855,F=2055,P＜0.001).Conclusion Change of P-wave can be used to guide PICC placement and predict tip location.ECG-aided tip localization of PICC is accurate,and can be used as an alternative way.Besides,regression equation can be used to predict the optimal length of PICC.