title: Hazards of straight catheter aortography in the tortuous abdominal aorta.
abstract: Twenty abdominal aortograms utilizing a straight-tipped catheter were evaluated for catheter tip motion during the injection of contrast media. The catheter tips were stable in 15 patients but showed downward recoil in the remaining 5 patients. These 5 patients had marked tortuosity of their abdominal aortae which was felt to be the etiology of the catheter tip instability. Based on this finding, the use of a straight-tipped catheter is to be discouraged in patients with extreme tortuosity of the abdominal aorta.
mesh_terms: D001012:Aorta, Abdominal / Q000000981:diagnostic imaging* / Q000293:injuries; D002404:Catheterization / Q000009:adverse effects* / Q000295:instrumentation / Q000379:methods; D003287:Contrast Media / Q000008:administration & dosage; D006801:Humans; D006973:Hypertension / Q000000981:diagnostic imaging*; D011859:Radiography
chemical_list: D003287:Contrast Media