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  • Title: Central venous port implantations via the cephalic vein applying an intravasal electrographic control of the catheter tip position: a single-center experience of 316 cases.
    Author: Schenck M, Schneider T, Rübben H, Eisenhardt A.
    Journal: World J Urol; 2012 Jun; 30(3):399-404. PubMed ID: 21874511.
    Abstract:
    PURPOSE: The aim of this study was the analysis of the feasibility and complication rate of central venous port implantation with the surgical cut-down technique applying an intravasal electrographic control of the catheter tip position performed by urologists. PATIENTS AND METHODS: In the time from December 1999 to November 2010, implantation of 324 subcutaneously implanted venous port systems (NuPort-System) has been performed in 316 patients, 221 men (mean age 59.5 years, range 11-87 years) and 95 women (mean age 57.6 years, range 7-85 years). Two hundred and fifty-nine (79.9%) port systems were placed under electrographic control of the catheter tip position. Duration of procedure, long-term device function, and complications such as infections, occlusions, dislocations, and thrombosis were all retrospectively measured and recorded until removal of the device, patient's death or the last known recorded documentation. RESULTS: In total, 359 devices have been used in 348 surgical procedures, 324 implantations (90.25%), and 35 explantations (9.75%). Port systems were implanted using the cephalic vein in 275 patients (84.9%), and in 49 (15.1%), the subclavian vein was used for insertion of the catheter. Mean surgical implantation time was 38.8 min (15-85 min). The median follow-up was 490.6 days (range 2-2,568); 159,764 catheter days (mean, 234 days, range 2-2,604) were documented. Of 35 explanted devices, the explantation was necessary due to complications in 28 cases (8.6%) with infection n = 6 (1.9%, 0.037 per 1,000 catheter days), occlusion n = 8 (2.5%, 0.050 per 1,000 catheter days), dislocation n = 7 (2.2%, 0.044 per 1,000 catheter days), deep vein thrombosis of the upper extremity n = 6 (1.9%, 0.037 per 1,000 catheter days), and clotting n = 1 (0.3%, 0.006 per 1,000 catheter days). Premature catheter removal (<30d post-operatively) was required in 6 patients (1.9%, 0.037 per 1,000 catheter days) due to complications: 3 catheter dislocations/malfunctions (0.9%, 0.019 per 1,000 catheter days), one port related infection, one pocket port infection, and one deep vein thrombosis of the upper extremity (0.3%, 0.006 per 1,000 catheter days). CONCLUSIONS: The intra-atrial ECG techniques to judge correct tip positioning for central venous port implantations are simple and economical. The exact position can be determined intraoperatively. It can justify a delayed postoperative chest X-ray to confirm CVC line tip placement. Nevertheless, the procedure and handling of the device later on has to be performed with care in order to avoid infections and technical problems.
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