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Clinical Treatment for Older Patients With Aortic Stenosis

by Colleen Fleiss on February 5, 2019 at 1:22 AM
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Clinical Treatment for Older Patients With Aortic Stenosis

Serious risks of functional decline associated with transcatheter aortic valve replacement (TAVR) or surgical aortic valve replacement (SAVR) surgery in older patients may well outweigh the benefits, and in particular, may not meet an individual's goals for treatment, stated study.

Why do some patients recover quickly after surgery, while others don't? That is an important question when treating older frail patients suffering from aortic stenosis. Lead author Dae Hyun Kim, M.D., M.P.H., Sc.D., and principle investigator Director Lewis A. Lipsitz in the Marcus Institute for Aging Research at Hebrew SeniorLife explore this question in a paper published today in the Journal of the American Medical Association Internal Medicine.

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The disease poses a serious health threat to older adults, impacting function and quality of life at best, and at worse, threatening survival.

With recent advances in surgical techniques, more patients are undergoing transcatheter aortic valve replacement (TAVR) or surgical aortic valve replacement (SAVR) to treat aortic stenosis.Although outcomes have improved over time, older patients continue to experience high rates of functional decline, particularly if they are frail before surgery. Many older patients, given the option, would often choose quality of life over longevity when making choices about their care.
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Earlier clinical trials and observational studies demonstrated improvement in functional status after TAVR and SAVR. However, these studies' results may not be applicable to all patients. The studies also assessed functional limitations due to heart failure using disease-specific measures, rather than measures that looked at, for example, how patients were doing with activities of daily living, capturing a broader picture of how patients were fairing after surgery. As this study shows, the functional status of a patient before surgery impacts post-operative outcomes, including rates of recovery and long-range functional status. After heart valve replacement, five paths were identified that describe how much patients recover. After minimally invasive transcatheter replacement, many patients did not have improvement in functional status. In particular, patients who were very frail before their procedures tended to have the worst outcomes. Patients who are stronger generally get open heart surgery, and after surgical valve replacement, patients generally did better. Discussion of expected recovery can help to inform patient centered decision making.

According to Dr. Kim, "Although older patients with severe aortic valve stenosis undergo these procedures with expectation that their functional status improves, those with severe frailty, have functional decline. We emphasize the various processes of "how" they get to where they are at 12 months, and identified preoperative frailty, postoperative complications and delirium as strong predictors of functional decline, which can be potential targets for intervention."

Source: Eurekalert
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