Abstract: Objective: To analyze the feasibility and safety of the improved ECG dedicated conversion clip in PICC tip positioning. Methods: Prospective control research was conducted. In the test group (n=551), the non-sterile ECG dedicated conversion clip was wrapped in a sterile sheath to guide the intracaval ECG. In the control group (n=551), the sterile ECG dedicated conversion clip was directly used to guide the intracaval ECG. The CRBSI, stability of the ECG complexes and accuracy of catheter tip position were compared. Results: CRBSI did not occur in either group. The stability of the electrocardiogram complexes (P=0.376) and accuracy of catheter tip position (P=0.367) were similar between the two groups. Conclusion: The using of improved ECG dedicated conversion clip to guide the intracaval ECG is a safe, aseptic and convenient way.

Key words: PICC; ECG positioning technology; sterile sheath; ECG dedicated conversion clip