COVID-19 symptoms that persist long after infection, known as “long COVID”, has been tied to a higher risk for new kidney problems, according to a new study.
Analyzing data on more than 1.7 million U.S. veterans, including nearly 90,000 COVID-19 survivors with symptoms lasting at least 30 days, researchers found the “long haulers” were at higher risk for new kidney problems compared to people who had not been infected with the coronavirus.
This was true even when survivors had not been hospitalized, although declines in kidney function were “more profound” with more severe infection, they reported on Wednesday in the Journal of the American Society of Nephrology.
Roughly 5% of the Long COVID group developed at least a 30% drop in a critical measure of kidney function known as the estimated glomerular filtration rate, or eGFR.
Overall, people with long COVID were 25% more likely than uninfected people to develop a 30% decline in eGFR, with higher risks in survivors of more severe disease. While kidney function often declines with age, the damage in these patients “was in excess” of what happens with normal aging, study coauthor Dr. Ziyad Al-Aly, of Washington University in St. Louis, said in a statement.
“Our findings emphasize the critical importance of paying attention to kidney function and disease in caring for patients who have had COVID-19,” he said.
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