Clinical application of intracavitary electrocardiogram in positioning of PICC catheter tip through inferior vena cava

Objective To explore the clinical application of intracavitary electrocardiogram in positioning of PICC catheter tip through inferior vena cava and summarize the change rule of electrocardiographic wave during the PICC process. Methods 60 patients who couldn′t receive PICC through precava were recruited from a tertiary hospital and assigned into the intervention group and the control group randomly. Patients in the control group received PICC through inferior vena cava and X-ray was used to confirm the positioning of PICC catheter tip. Patients in the intervention group were checked by intracavitary electrocardiogram. Success rates were compared and the change rule of electrocardiographic wave during the PICC process was summarized. Results The success rate was 100% in the intervention group and 86.7% in the control group. All patients in the intervention group showed the typical change of intracavitary electrocardiogram. Conclusions Intracavitary electrocardiogram can promote success rate of PICC through inferior vena cava and reduce the side effect. It is of great value to generalize intracavitary electrocardiogram in clinical application. Key words: Intracavitary electrocardiogram; PICC through inferior vena cava; Positioning of PICC catheter tip