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Heat related illness

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https://www.readbyqxmd.com/read/28414703/recruitment-methods-and-descriptive-results-of-a-physiologic-assessment-of-latino-farmworkers-the-california-heat-illness-prevention-study
#1
Diane C Mitchell, Javier Castro, Tracey L Armitage, Alondra J Vega-Arroyo, Sally C Moyce, Daniel J Tancredi, Deborah H Bennett, James H Jones, Tord Kjellstrom, Marc B Schenker
OBJECTIVE: The California heat illness prevention study (CHIPS) devised methodology and collected physiological data to assess heat related illness (HRI) risk in Latino farmworkers. METHODS: Bilingual researchers monitored HRI across a workshift, recording core temperature, work rate (metabolic equivalents [METs]), and heart rate at minute intervals. Hydration status was assessed by changes in weight and blood osmolality. Personal data loggers and a weather station measured exposure to heat...
April 14, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28411725/effects-of-heat-stress-on-risk-perceptions-and-risk-taking
#2
Chu-Hsiang Chang, Thomas E Bernard, Jennifer Logan
Exposure to extreme heat at work is a serious occupational hazard, as exposure can result in heat-related illnesses, and it has been linked to increased risk of accidents and injuries. The current study aimed to examine whether heat exposure is related to changes in individuals' psychological process of risk evaluation, and whether acclimatization can mitigate the effect of heat exposure. A study with quasi-experiment research design was used to compare participants' risk perceptions and risk-taking behaviors at baseline, initial exposure to heat, and exposure after acclimatization across male participants who were exposed to heat (N = 6), and males (N = 5) and females (N = 6) who were in the control group who were exposed to ambient temperature...
July 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28408306/heart-failure-and-thermoregulatory-control-can-patients-with-heart-failure-handle-the-heat
#3
REVIEW
Bryce N Balmain, Surendran Sabapathy, Ollie Jay, Julie Adsett, Glenn M Stewart, Rohan Jayasinghe, Norman R Morris
Upon heat exposure, the thermoregulatory system evokes reflex increases in sweating and skin blood flow responses to facilitate heat dissipation and maintain heat balance to prevent the continuing rise in core temperature. These heat dissipating responses are mediated primarily by autonomic and cardiovascular adjustments; which if attenuated, may compromise thermoregulatory control. In patients with heart failure (HF), the neurohumoral and cardiovascular dysfunction that underpins this condition may potentially impair thermoregulatory responses and, consequently, place these patients at a greater risk of heat-related illness...
April 10, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28402203/hydration-and-cooling-practices-among-farmworkers-in-oregon-and-washington
#4
Jeffrey W Bethel, June T Spector, Jennifer Krenz
BACKGROUND: Although recommendations for preventing occupational heat-related illness among farmworkers include hydration and cooling practices, the extent to which these recommendations are universally practiced is unknown. The objective of this analysis was to compare hydration and cooling practices between farmworkers in Oregon and Washington. METHODS: A survey was administered to a purposive sample of Oregon and Washington farmworkers. Data collected included demographics, work history and current work practices, hydration practices, access and use of cooling measures, and headwear and clothing worn...
April 12, 2017: Journal of Agromedicine
https://www.readbyqxmd.com/read/28379784/evaluation-of-diagnostic-codes-in-morbidity-and-mortality-data-sources-for-heat-related-illness-surveillance
#5
Laurel Harduar Morano, Sharon Watkins
OBJECTIVES: The primary objective of this study was to identify patients with heat-related illness (HRI) using codes for heat-related injury diagnosis and external cause of injury in 3 administrative data sets: emergency department (ED) visit records, hospital discharge records, and death certificates. METHODS: We obtained data on ED visits, hospitalizations, and deaths for Florida residents for May 1 through October 31, 2005-2012. To identify patients with HRI, we used codes from the International Classification of Diseases, Ninth Revision, Clinical Modification ( ICD-9-CM) to search data on ED visits and hospitalizations and codes from the International Classification of Diseases, Tenth Revision ( ICD-10) to search data on deaths...
May 2017: Public Health Reports
https://www.readbyqxmd.com/read/28358522/update-exertional-hyponatremia-active-component-u-s-armed-forces-2001-2016
#6
(no author information available yet)
From 2001 through 2016, there were 1,519 incident diagnoses of exertional hyponatremia among active component service members (incidence rate: 6.9 cases per 100,000 person-years [p-yrs]). The incidence rate in 2016 (6.6 cases per 100,000 p-yrs) represented a decrease of 23.3% from 2015. Compared to their respective counterparts, overall incidence rates of exertional hyponatremia were higher among females, those aged 19 years or younger, and recruit trainees. The overall incidence rate during the surveillance period was highest in the Marine Corps, intermediate in the Army and Air Force, and lowest in the Navy...
March 2017: MSMR
https://www.readbyqxmd.com/read/28358520/update-heat-illness-active-component-u-s-armed-forces-2016
#7
(no author information available yet)
In 2016, there were 2,536 incident diagnoses of heat illness among active component service members (incidence rate: 1.96 cases per 1,000 person-years [p-yrs]). The overall crude incidence rates of heat stroke and "other heat illness" were 0.31 and 1.65 per 1,000 p-yrs, respectively. In 2016, subgroup-specific incidence rates of heat stroke were highest among males and service members aged 19 years or younger, Asian/Pacific Islanders, Marine Corps and Army members, recruit trainees, and those in combat-specific and "other" occupations...
March 2017: MSMR
https://www.readbyqxmd.com/read/28349095/cooling-interventions-for-athletes-an-overview-of-effectiveness-physiological-mechanisms-and-practical-considerations
#8
REVIEW
Coen C W G Bongers, Maria T E Hopman, Thijs M H Eijsvogels
Exercise-induced increases in core body temperature could negative impact performance and may lead to development of heat-related illnesses. The use of cooling techniques prior (pre-cooling), during (per-cooling) or directly after (post-cooling) exercise may limit the increase in core body temperature and therefore improve exercise performance. The aim of the present review is to provide a comprehensive overview of current scientific knowledge in the field of pre-cooling, per-cooling and post-cooling. Based on existing studies, we will discuss 1) the effectiveness of cooling interventions, 2) the underlying physiological mechanisms and 3) practical considerations regarding the use of different cooling techniques...
2017: Temperature: Multidisciplinary Biomedical Journal
https://www.readbyqxmd.com/read/28344848/occupational-heat-stress-impacts-on-health-and-productivity-in-a-steel-industry-in-southern-india
#9
Manikandan Krishnamurthy, Paramesh Ramalingam, Kumaravel Perumal, Latha Perumal Kamalakannan, Jeremiah Chinnadurai, Rekha Shanmugam, Krishnan Srinivasan, Vidhya Venugopal
BACKGROUND: Workers laboring in steel industries in tropical settings with high ambient temperatures are subjected to thermally stressful environments that can create well-known risks of heat-related illnesses and limit workers' productivity. METHODS: A cross-sectional study undertaken in a steel industry in a city nicknamed "Steel City" in Southern India assessed thermal stress by wet bulb globe temperature (WBGT) and level of dehydration from urine color and urine specific gravity...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28337936/females-exposed-to-24%C3%A2-h-of-sleep-deprivation-do-not-experience-greater-physiological-strain-but-do-perceive-heat-illness-symptoms-more-severely-during-exercise-heat-stress
#10
Rebecca Relf, Ashley Willmott, Jessica Mee, Oliver Gibson, Arron Saunders, Mark Hayes, Neil Maxwell
There is limited and inconclusive evidence surrounding the physiological and perceptual responses to heat stress while sleep deprived, especially for females. This study aimed to quantify the effect of 24 h sleep deprivation on physiological strain and perceptual markers of heat-related illness in females. Nine females completed two 30-min heat stress tests (HST) separated by 48 h in 39°C, 41% relative humidity at a metabolic heat production of 10 W · kg(-1). The non-sleep deprived HST was followed by the sleep deprivation (SDHST) trial for all participants during the follicular phase of the menstrual cycle...
March 24, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28314926/american-football-and-fatal-exertional-heat-stroke-a-case-study-of-korey-stringer
#11
Andrew Grundstein, John A Knox, Jennifer Vanos, Earl R Cooper, Douglas J Casa
On August 1, 2001, Korey Stringer, a Pro Bowl offensive tackle for the Minnesota Vikings, became the first and to date the only professional American football player to die from exertional heat stroke (EHS). The death helped raise awareness of the dangers of exertional heat illnesses in athletes and prompted the development of heat safety policies at the professional, collegiate, and interscholastic levels. Despite the public awareness of this death, no published study has examined in detail the circumstances surrounding Stringer's fatal EHS...
March 17, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28283460/anti-parkinsonian-l-dopa-can-also-act-as-anti-systemic-amyloidosis-a-mechanistic-exploration
#12
Saima Nusrat, Nida Zaidi, Mohammad Khursheed Siddiqi, Masihuz Zaman, Ibrar Ahmed Siddique, Mohammad Rehan Ajmal, Ali Saber Abdelhameed, Rizwan Hasan Khan
In spite of the fact that amyloid related neurodegenerative illnesses and non-neuropathic systemic amyloidosis have allured the research endeavors, as no cure has been announced yet apart from symptomatic treatment. Therapeutic agents which can reduce or disaggregate those toxic oligomers and fibrillar species have been studied with more compounds are on their way. The current research work describes comprehensive biophysical, computational and microscopic studies which reveal that L-3, 4-dihydroxyphenylalanine (L-Dopa) have indisputable efficacy to hinder the heat induced amyloid fibrillation of the human lysozyme (HL) and also preserve the fibril disaggregating potential...
June 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28210860/a-heat-vulnerability-index-to-improve-urban-public-health-management-in-san-juan-puerto-rico
#13
Pablo Méndez-Lázaro, Frank E Muller-Karger, Daniel Otis, Matthew J McCarthy, Ernesto Rodríguez
Increased frequency and length of high heat episodes are leading to more cardiovascular issues and asthmatic responses among the population of San Juan, the capital of the island of Puerto Rico, USA. An urban heat island effect, which leads to foci of higher temperatures in some urban areas, can raise heat-related mortality. The objective of this research is to map the risk of high temperature in particular locations by creating heat maps of the city of San Juan. The heat vulnerability index (HVI) maps were developed using images collected by satellite-based remote sensing combined with census data...
February 17, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28190442/neurologic-complications-of-acute-environmental-injuries
#14
REVIEW
I R F da Silva, J A Frontera
Environmental injuries can result in serious neurologic morbidity. This chapter reviews neurologic complications of thermal burns, smoke inhalation, lightning strikes, electric injury, near drowning, decompression illness, as well as heat stroke and accidental hypothermia. Knowing the pathophysiology and clinical presentation of such injuries is essential to proper management of primary and secondary medical complications. This chapter highlights the most frequently encountered neurologic injuries secondary to common environmental hazards, divided into the topics: injuries related to fire, electricity, water, and the extremes of temperature...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28135290/global-proteome-changes-in-the-rat-diaphragm-induced-by-endurance-exercise-training
#15
Kurt J Sollanek, Jatin G Burniston, Andreas N Kavazis, Aaron B Morton, Michael P Wiggs, Bumsoo Ahn, Ashley J Smuder, Scott K Powers
Mechanical ventilation (MV) is a life-saving intervention for many critically ill patients. Unfortunately, prolonged MV results in the rapid development of diaphragmatic atrophy and weakness. Importantly, endurance exercise training results in a diaphragmatic phenotype that is protected against ventilator-induced diaphragmatic atrophy and weakness. The mechanisms responsible for this exercise-induced protection against ventilator-induced diaphragmatic atrophy remain unknown. Therefore, to investigate exercise-induced changes in diaphragm muscle proteins, we compared the diaphragmatic proteome from sedentary and exercise-trained rats...
2017: PloS One
https://www.readbyqxmd.com/read/28118110/heat-exposure-in-central-florida-fernery-workers-results-of-a-feasibility-study
#16
Valerie Vi Thien Mac, Jose Antonio Tovar-Aguilar, Joan Flocks, Jeannie Economos, Vicki Hertzberg, Linda A McCauley
OBJECTIVE: The objective of this study was to determine the feasibility of field-based biomonitoring of heat-related illness (HRI) phenomena in Florida farmworkers. We determined feasibility through participant interviews regarding acceptability, data capture, recruitment and retention, and observed barriers and challenges to implementation. METHODS: Study participants were employed in fernery operations in northeast Central Florida where ornamental ferns are grown and harvested in a seasonally high heat environment...
January 24, 2017: Journal of Agromedicine
https://www.readbyqxmd.com/read/28108783/health-symptoms-in-relation-to-temperature-humidity-and-self-reported-perceptions-of-climate-in-new-york-city-residential-environments
#17
Ashlinn Quinn, Jeffrey Shaman
Little monitoring has been conducted of temperature and humidity inside homes despite the fact that these conditions may be relevant to health outcomes. Previous studies have observed associations between self-reported perceptions of the indoor environment and health. Here, we investigate associations between measured temperature and humidity, perceptions of indoor environmental conditions, and health symptoms in a sample of New York City apartments. We measured temperature and humidity in 40 New York City apartments during summer and winter seasons and collected survey data from the households' residents...
January 20, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28066542/characterization-of-tubular-liquid-crystal-structure-in-embryonic-stem-cell-derived-embryoid-bodies
#18
MengMeng Xu, Odell D Jones, Liyang Wang, Xin Zhou, Harry G Davis, Joseph L Bryant, Jianjie Ma, Willian B Isaacs, Xuehong Xu
BACKGROUND: Massive liquid crystal droplets have been found during embryonic development in more than twenty different tissues and organs, including the liver, brain and kidney. Liquid crystal deposits have also been identified in multiple human pathologies, including vascular disease, liver dysfunction, age-related macular degeneration, and other chronic illnesses. Despite the involvement of liquid crystals in such a large number of human processes, this phenomenon is poorly understood and there are no in vitro systems to further examine the function of liquid crystals in biology...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28039200/work-related-musculoskeletal-disorders-among-construction-workers-in-the-united-states-from-1992-to-2014
#19
Xuanwen Wang, Xiuwen Sue Dong, Sang D Choi, John Dement
OBJECTIVES: Examine trends and patterns of work-related musculoskeletal disorders (WMSDs) among construction workers in the USA, with an emphasis on older workers. METHODS: WMSDs were identified from the 1992-2014 Survey of Occupational Injuries and Illnesses (SOII), and employment was estimated from the Current Population Survey (CPS). Risk of WMSDs was measured by number of WMSDs per 10 000 full-time equivalent workers and stratified by major demographic and employment subgroups...
May 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/27998386/analysis-of-a-community-based-intervention-to-reduce-heat-related-illness-during-heat-waves-in-licheng-china-a-quasi-experimental-study
#20
Jing Li, Xin Xu, Jun Wang, Yun Zhao, Xiu Ping Song, Zhi Dong Liu, Li Na Cao, Bao Fa Jiang, Qi Yong Liu
OBJECTIVE: To reduce health-related threats of heat waves, interventions have been implemented in many parts of the world. However, there is a lack of higher-level evidence concerning the intervention efficacy. This study aimed to determine the efficacy of an intervention to reduce the number of heat-related illnesses. METHODS: A quasi-experimental design was employed by two cross-sectional surveys in the year 2014 and 2015, including 2,240 participants and 2,356 participants, respectively...
2016: Biomedical and Environmental Sciences: BES
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