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Hydration Status, Kidney Function, and Kidney Injury in Florida Agricultural Workers

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Objective:

Recent findings suggest that laboring in hot occupational environments is related to kidney damage in agricultural workers. We examined hydration status and kidney function in 192 Florida agricultural workers.Methods:

Blood and urine samples were collected over 555 workdays during the summers of 2015 and 2016. Urine-specific gravity (USG), serum creatinine, and other kidney function markers were examined pre- and post-shift on each workday. Multivariable mixed modeling was used to examine the association of risk factors with hydration status and acute kidney injury (AKI).
Results:

Approximately 53% of workers were dehydrated (USG ≥1.020) pre-shift and 81% post-shift; 33% of participants had AKI on at least one workday. The odds of AKI increased 47% for each 5-degree (°F) increase in heat index.
Conclusion:

A strikingly high prevalence of dehydration and AKI exists in Florida agricultural workers.
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Keywords: agricultural workers; climate change; dehydration; heat exposure; kidney injury

Document Type: Research Article

Affiliations: 1: Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia (Drs Mix, Mac, Stover Hertzberg, McCauley); Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia (Ms Elon); Center for Governmental Responsibility, Levin College of Law, University of Florida, Gainesville, Florida (Ms Flocks); and Farmworker Association of Florida, Apopka, Florida (Economos, Dr Tovar-Aguilar). 2: Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia (Drs Mix, Mac, Stover Hertzberg, McCauley); Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia (Ms Elon); Center for Governmental Responsibility, Levin College of Law, University of Florida, Gainesville, Florida (Ms Flocks); and Farmworker Association of Florida, Apopka, Florida (Economos, Dr Tovar-Aguilar). 3: Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, Georgia (Drs Mix, Mac, Stover Hertzberg, McCauley); Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia (Ms Elon); Center for Governmental Responsibility, Levin College of Law, University of Florida, Gainesville, Florida (Ms Flocks); and Farmworker Association of Florida, Apopka, Florida (Economos, Dr Tovar-Aguilar).

Publication date: May 1, 2018

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