261. Vascular problems a/w intravenous drug use / Ddx occluded chronic indwelling catheter March 20th, 2008 by reuben in catheter, IVDU Back Top Tags: card 260. Ddx thoracic outlet syndrome / 5 Causes of peripheral A-V fistulae 262. Approach to occluded indwelling catheter / Remove line if local infection? / Why no circumferential bandage or tourniquet or BP cuff on arm with Cimino prosthetic bridge fistula? Leave a Reply Cancel reply Please post any discussion to the emupdates Reddit page.