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  • Title: [Percutaneous retrieval of intravascular foreign bodies].
    Author: Cotroneo AR, Di Stasi C, Pedicelli A, Cina A, Di Gregorio F, Marano P.
    Journal: Radiol Med; 1998 Nov; 96(5):492-7. PubMed ID: 10051874.
    Abstract:
    INTRODUCTION: The spreading of interventional procedures and the frequent use and replacement of central venous catheters have contributed to a relative increase in the occurrence of intravascular foreign bodies (FBs). Their retrieval is justified by potential complications related to their characteristics, location and permanence. The high morbidity related to surgical retrieval, especially in case of intravenous FBs (often located in the right cardiac chambers or the pulmonary artery) has contributed to the spreading of interventional retrieval procedures. The purpose of percutaneous retrieval is: 1) to hook the FB to stop its migration to more critical districts; 2) to extract it through the percutaneous access route or, if the latter is unfeasible, 3) to simplify surgical retrieval. MATERIAL AND METHODS: We report our experience with 15 patients presenting an FB [intravenous (i.v.) in 11 cases and intra-arterial (i.a.), in 4]. Retrieval was performed mainly with snare-loop catheters (13 cases, together with a pig-tail catheter in 3 patients) and also with Dormia baskets (3 cases, together with a snare loop in 1 case). To ensure the percutaneous retrieval, we used introductors with a greater caliber than that of the FB, the latter generally being a 6-7 F intravenous catheter. The percutaneous approach was mostly transfemoral (right femoral in 9 cases and bilateral femoral, left femoral, axillary and left jugular in 1 case each). RESULTS: Percutaneous retrieval was successful in all the i.v. cases and in 1 ia case. The other 3 ia cases required surgical removal under local anesthesia after percutaneous hooking and displacement of the FB to a more accessible site. No major complications were observed during retrievals. CONCLUSIONS: Based on our personal results and in agreement with the major international reports, we believe that percutaneous retrieval should be considered the treatment of choice for FBs. The procedure success depends on an accurate diagnostic approach, good knowledge of materials and techniques and the operator's experience, as well as the possibility of an interdisciplinary collaboration of the interventional radiologist with the surgeon and anesthesist.
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