Chronic progressive renal artery stenosis Revascularization may be considered for patients who meet one or more of the following criteria: Failure or intolerance of medical therapy for optimal blood pressure A short duration of elevated blood pressure prior to the diagnosis of renovascular disease Recurrent flash pulmonary edema Unexplained rapid progression of renal insufficiency Revascularization is usually achieved by percutaneous transluminal angioplasty (PTA) with stent placement or with surgical bypass of the stenotic segment.