Clinical application of totally implantable venous access port in infants with malignant tumors

Objective To study the operation methods and implant depth of totally implantable venous access port（TIVAP） and its complications. Methods TIVAP was implanted subcutaneously via subclavian vein following the Seldinger puncture method.Correlation of implanted TIVAP depth with the age,body height and weight of patients was analyzed and a regression equation was formulated. Results Of the 22 patients,20 underwent right subclavian vein puncture including 1 who received open surgery for TIVAP implant,and 2 underwent left subclavian vein puncture.Among these 2 patients,TIVAP was removed in 1 due to exudate and remained in 1 after thrombi were dissociated with urokinase.The implant depth of TIVAP was positively related with the age,body height and weight of the patients and their coefficient was 0.765 0,0.937 6 and 0.740 2 respectively.The regression equation for implant depth of TIVAP and body height is expressed as length=0.766 3+0.095×body height. Conclusion Implant TIVAP depth can be predicted before operation and TIVAP can implanted into an appropriate site when no C-arm chest x-ray is available.