Abstract: Objective To investigate the risk factors and significance of catheter dislocationat the venipuncture site after the implantation of a totally implantable venous access port (TIVAP) in patients with breast cancer.Methods From January 2019 to September 2021,1003 patients who underwent vein approach transfusion port implantation were divided into the catheter dislocation group(7 cases) and the non-catheter dislocation group(996 cases).Risk factors for post operative recurrence of catheter dislocationwere analyzed through univariate analysis and logistic regression analysis.Results The results of the univariate analysis indicated that the incidence of catheter dislocation in the group with age≥60 years, axillary vein approach, and left-side puncture was higher than that in the control group, and the difference was statistically significant (P< 0.05). The BMI of the dislocation group [(27.06 ± 2.16)kg/m²] was higher than that of the non-dislocation group [(25.09 ± 3.33)kg/m²],there was a statistically significant difference between the two groups (P=0.05).The multivariate Logistic regression analysis showed that the catheterization approach and puncture side had no significant effect on catheter dislocation (P>0.05); high BMI and age≥ 60 years were independent risk factors for catheter dislocation complications (P<0.05).Conclusion Axillary vein approach transfusion port implantation is relatively safe and reliable.Age≥ 60years old and high BMI are independent risk factors affecting the complication of catheter dislodgement.

Key words: totally implantable venous access port (TIVAP);axillary vein;subclavian vein;internal jugular vein;catheter dislodgement;complications