Perforation complicating carotid artery stenting: the use of a covered stent.

Carotid artery angioplasty and stenting has emerged as an effective strategy for the treatment of significant carotid artery stenosis. Perforation during carotid artery stenting is a very rare potential complication of the procedure. We describe a case of carotid artery perforation that occurred during postdilation of the carotid artery stent.

Renal artery stenting using gadodiamide arteriography in patients with baseline renal insufficiency.

Purpose: To investigate whether a contrast agent containing gadodiamide can reduce the incidence of contrast-induced nephropathy associated with renal artery stenting in patients with preexisting renal insufficiency.

Methods: Between 1999 and 2002, gadodiamide-based arteriography was used in 20 patients (12 men; mean age 69 years) with significant baseline renal insufficiency (creatinine > or =1.7 mg/dL) undergoing renal artery stenting for > or =70% stenoses in 25 renal arteries.