The American journal of medicine
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Altered immune response and cognitive difficulties have been demonstrated in studies of post-COVID syndrome, including differences in immune status and cognitive functioning in the months following infection. This review aimed to examine immune status and cognitive differences in post-COVID syndrome 12 or more weeks after COVID-19 infection. A further aim of this review was to explore a link between immune response and the cognitive deficits observed in this group. ⋯ This review highlights the frequency of cognitive difficulties months after COVID-19 infection and explores heightened immune response as a predictor of this change. Six studies suggest that immune status is a predictor of cognitive function, examining a marker of immune function and objective cognitive performance at 12 or more weeks following infection. Future studies of cognitive function in post-COVID syndrome are needed to explore this relationship and underlying mechanisms leading to changes in cognitive performance.
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Review Meta Analysis
Transcatheter Aortic Valve Replacement in Low-Risk Patients at Four or More Years.
Transcatheter aortic valve replacement (TAVR) is accepted as an alternative to surgical aortic valve replacement (SAVR) in patients with severe symptomatic aortic valve stenosis. Prior studies have shown that TAVR has comparable or superior outcomes to SAVR in intermediate and high-risk patients. However, there is paucity of data about outcome of TAVR vs SAVR in low-surgical-risk patients evaluated at 4 or more years post-procedure. ⋯ At 4 or more years of follow-up, TAVR is safe and has comparable outcomes to SAVR in low-surgical-risk patients. Possibility of TAVR and its risks and benefits should be discussed with low-surgical-risk patients.