Journal
NEW ENGLAND JOURNAL OF MEDICINE
Volume 371, Issue 8, Pages 744-756Publisher
MASSACHUSETTS MEDICAL SOC
DOI: 10.1056/NEJMra1313875
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Funding
- Edwards Lifesciences
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Valvular aortic stenosis is a progressive disease in which the end stage is characterized by obstruction of left ventricular outflow, resulting in inadequate cardiac output, decreased exercise capacity, heart failure, and death from cardiovascular causes. The prevalence of aortic stenosis is only about 0.2% among adults between the ages of 50 and 59 years but increases to 9.8% in octogenarians, with an overall prevalence of 2.8% in adults older than 75 years of age. Although mortality is not increased when aortic stenosis is asymptomatic, the rate of death is more than 50% at 2 years for patients with symptomatic disease unless aortic-valve replacement is performed promptly. A total of 65,000 aortic-valve replacements were performed in the United States in 2010, primarily for aortic stenosis; 70% of these procedures were performed in patients older than 65 years of age, contributing to the high cost of health care in our aging population.(5) Currently, there are no medical therapies to prevent or slow the progression of the disease. Instead, improving patient outcomes depends on identifying those at risk for valve disease, accurately measuring the severity of stenosis, managing any concurrent disease, and ensuring the appropriate timing and type of aortic-valve replacement.
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