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Management of visceral interventional radiology catheters: a troubleshooting guide for interventional radiologists Maher MM; Kealey S; McNamara A; O'Laoide R; Gibney RG; Malone DERadiographics 2002[Mar]; 22 (2): 305-22Visceral interventional radiology catheters can be difficult to exchange or remove for a variety of reasons. These reasons include exit of the guide wire through the side holes of the catheter, blockage of the catheter, difficulty unlocking the pigtail, retention of the string after catheter removal, migration of the string ahead of the guide wire, catheter fracture, and snaring of an adjacent stent by the pigtail. Secure fixation of the catheter to the skin is important. A technique that allows secure fixation without direct puncture and suturing of the catheter to the skin is recommended. If a catheter falls out or is inadvertently removed, access can occasionally be regained and the catheter can be replaced without repuncture. The timing of catheter removal is based on the clinical condition of the patient and the daily output from the catheter. "Tractography" is a useful study before removal of any catheter that requires a mature tract for removal, particularly cholecystostomy catheters and transpleural catheters. In biliary catheter exchange, the most vital issue is the position of the side holes of the catheter. If an abscess cavity remains large after catheter drainage, the catheter can be repositioned or a second catheter can be placed.|*Catheters, Indwelling[MESH]|*Radiology, Interventional/instrumentation/methods[MESH]|Device Removal[MESH]|Humans[MESH] |