A Retrospective Study of Intravascular Ultrasound use in Patients Undergoing Endovascular Aneurysm Repair: Its Usefulness and a Description of the Procedure

AbstractObjectivesTo verify the usefulness and limitation of intravascular ultrasound (IVUS) in endovascular aneurysm repair (EVAR).MethodsA total of 112 consecutive patients, who underwent EVAR to treat abdominal aortic aneurysms, were examined retrospectively. Of these, 33 patients were assigned to the IVUS group because of renal failure, a suspected allergy to contrast agents or anatomical difficulties; the remaining 79 patients were assigned to the non-IVUS group.ResultsPatients in the IVUS group required fewer intra-arterial contrast agents (IACAs) than those in the non-IVUS group (67±34ml vs. 123±50ml; p