Heat strain, volume depletion and kidney function in California agricultural workers

BackgroundAgricultural work can expose workers to increased risk of heat strain and volume depletion due to repeated exposures to high ambient temperatures, arduous physical exertion and limited rehydration. These risk factors may result in acute kidney injury (AKI).MethodsWe estimated AKI cumulativ...

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Veröffentlicht in:Occupational and environmental medicine (London, England) Jg. 74; H. 6; S. 402 - 409
Hauptverfasser: Moyce, Sally, Mitchell, Diane, Armitage, Tracey, Tancredi, Daniel, Joseph, Jill, Schenker, Marc
Format: Journal Article
Sprache:Englisch
Veröffentlicht: England BMJ Publishing Group Ltd 01.06.2017
BMJ Publishing Group LTD
Schlagworte:
Acute Kidney Injury - blood
Acute Kidney Injury - epidemiology
Acute Kidney Injury - etiology
Adult
Agricultural Workers' Diseases - blood
Agricultural Workers' Diseases - epidemiology
Agricultural Workers' Diseases - etiology
Agriculture
Ambient temperature
Blood pressure
Body Mass Index
Body temperature
California - epidemiology
Creatinine
Creatinine - blood
Data collection
Duty of care
Farmers
Farmworkers
Female
Glomerular Filtration Rate
Heart rate
Heat
Heat Stress Disorders - blood
Heat Stress Disorders - complications
Heat Stress Disorders - epidemiology
High temperature
Hot Temperature - adverse effects
Humans
Hypertension
Illnesses
Kidney diseases
Kidneys
Logistic Models
Male
Mass Spectrometry
Middle Aged
Obesity - epidemiology
Occupational exposure
Occupational Exposure - adverse effects
Personal health
Physiology
Questionnaires
Risk Factors
Sex Distribution
Surveys and Questionnaires
Temperature
Workers
Workplace
Young Adult
Central Valley
United States > US
California
ISSN:1351-0711, 1470-7926, 1470-7926
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Zusammenfassung:BackgroundAgricultural work can expose workers to increased risk of heat strain and volume depletion due to repeated exposures to high ambient temperatures, arduous physical exertion and limited rehydration. These risk factors may result in acute kidney injury (AKI).MethodsWe estimated AKI cumulative incidence in a convenience sample of 283 agricultural workers based on elevations of serum creatinine between preshift and postshift blood samples. Heat strain was assessed based on changes in core body temperature and heart rate. Volume depletion was assessed using changes in body mass over the work shift. Logistic regression models were used to estimate the associations of AKI with traditional risk factors (age, diabetes, hypertension and history of kidney disease) as well as with occupational risk factors (years in farm work, method of payment and farm task).Results35 participants were characterised with incident AKI over the course of a work shift (12.3%). Workers who experienced heat strain had increased adjusted odds of AKI (1.34, 95% CI 1.04 to 1.74). Piece rate work was associated with 4.24 odds of AKI (95% CI 1.56 to 11.52). Females paid by the piece had 102.81 adjusted odds of AKI (95% CI 7.32 to 1443.20).DiscussionHeat strain and piece rate work are associated with incident AKI after a single shift of agricultural work, though gender differences exist. Modifications to payment structures may help prevent AKI.
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ISSN:1351-0711
1470-7926
1470-7926
DOI:10.1136/oemed-2016-103848