J Korean Soc Radiol.  2024 Jan;85(1):161-170. 10.3348/jksr.2023.0061.

Feasibility and Safety of a Technique Intended to Place the Catheter Tip in the Right Atrium without Abutment Against the Cardiac Wall during Implantation of the Totally Implantable Venous Access Port

• Park H
• Seo TS
• Song MG
• Yang WJ

• KMID: 2552069
• DOI: http://doi.org/10.3348/jksr.2023.0061

Abstract

Purpose
To assess the safety and feasibility of intentionally positioning the catheter tip in the right atrium (RA) without an abutment during implantation of a totally implantable venous access port (TIVAP).
Materials and Methods
We enrolled 330 patients who had undergone TIVAP implantation between January and December 2016 and postoperative chest CT. The TIVAP was placed using the single-incision technique to access the axillary vein directly from the incision line. To position the catheter tip in the RA without abutment, blood return was checked before cutting. Catheter length and complications were evaluated by retrospectively reviewing medical images and records.
Results
All patients achieved successful catheter tip positioning without abutment or dysfunction. The median tip position was 15.3 mm distal to the cavoatrial junction (CAJ) on fluoroscopy and 6 mm distal to the CAJ on CT. Catheter tips migrated a median of 10.4 mm cephalically on CT compared to fluoroscopy. Thromboses were detected in the RA and superior vena cava in one patient each.
Conclusion
Intentional catheter tip positioning in the RA without abutment is a safe and feasible technique with a low incidence of thrombosis and no observed dysfunction.

Keyword

Catheter Tip; Catheter Abutment; Implantable Access Port