Restenosis following coronary angioplasty: clinical presentations and therapeutic options

Clinical Cardiology
G N LevineJ Loscalzo

Abstract

Restenosis following angioplasty is an iatrogenic disease of increasing frequency. Restenosis may be defined in terms of either angiographic or clinical criteria. Definitions of angiographic restenosis have varied in different studies, accounting in part for the differences in reported restenosis rates. Most studies now define angiographic restenosis as either a > 50% loss of initial gain or an absolute lesion stenosis of > or = 50% at follow-up angiogram. Common clinical end points used in defining restenosis include recurrent angina, need for repeat revascularization, or myocardial infarction. Despite technical advances and multiple pharmacologic interventions, most studies have found that the incidence of angiographic restenosis remains in the range of 40%; in none of these studies, however, was complete angiographic follow-up obtained, and thus actual restenosis rates may be somewhat higher. In several studies, clinical restenosis has been found to occur in approximately 36-40% of patients. Thus, a minority of patients with angiographic restenosis have no clinical manifestations. Most patients who develop symptoms of restenosis develop these symptoms within the first 3 months after angioplasty. The presenting symptom in the...Continue Reading

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