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  • Title: Factors predicting subcutaneous implanted central venous port function: the relationship between catheter tip location and port failure in patients with gynecologic malignancies.
    Author: Cohn DE, Mutch DG, Rader JS, Farrell M, Awantang R, Herzog TJ.
    Journal: Gynecol Oncol; 2001 Dec; 83(3):533-6. PubMed ID: 11733967.
    Abstract:
    OBJECTIVE: We set out to determine the factors that predict subcutaneous implanted central venous port function. Specifically, we sought to determine whether the location of the catheter tip is correlated with port failure. METHODS: A review of all gynecologic oncology patients who underwent initial port placement between 1993 and 1998 was undertaken. The initial chest radiograph following port placement was reviewed, and the venous location of the catheter tip was recorded. Patients were followed until port removal, death, or the last documentation of port function. RESULTS: Two hundred thirty-six patients underwent port placement during the study period. The majority of patients (97%) had their port placed for intravenous chemotherapy. The median time of port duration in patients with a functional port was 21.6 months. Forty of the 236 ports (17%) were removed because of device malfunction. Catheter tips were located in the central venous system in 164 (69%) cases and outside of the central venous system in 72 (31%) cases. Removal secondary to malfunction was significantly higher when the catheter tip was located outside of the central venous system (30/72 (42%) versus 10/164 (6%), P = 0.001). By life-table analysis, ports removed for malfunction with their tips located centrally had a significantly longer median duration of functional use than those whose tips were located peripherally (78 versus 44 months, P = 0.0001). CONCLUSIONS: The rate of port removal secondary to malfunction is significantly less if the catheter tip is located in the central venous system. Confirmation of the location of the catheter tip is imperative for the long-term function of a subcutaneous implanted central venous port.
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