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https://www.readbyqxmd.com/read/29344472/status-epilepticus-as-an-unusual-manifestation-of-heat-stroke
#1
Won Gu Lee, So-Young Huh, Jin-Hyung Lee, Bong Goo Yoo, Meyung Kug Kim
Heat stroke (HS) is a medical emergency and life threatening condition, characterized by body temperature over 40°C. This can lead to dysfunction of multiple organs such as the heart, liver, kidneys, lungs, blood coagulation system, and central nervous system. Neurological complications include change in consciousness, cerebellar dysfunction, convulsions, aphasia, muscular weakness, and parkinsonism. Cerebellar syndrome is the most common neurological finding in HS. We report a case of HS presenting with status epilepticus, without any other neurological manifestations...
December 2017: Journal of Epilepsy Research
https://www.readbyqxmd.com/read/29336710/consensus-statement-prehospital-care-of-exertional-heat-stroke
#2
Luke N Belval, Douglas J Casa, William M Adams, George T Chiampas, Jolie C Holschen, Yuri Hosokawa, John Jardine, Shawn F Kane, Michele Labotz, Renée S Lemieux, Kyle B McClaine, Nathaniel S Nye, Francis G O'Connor, Bryan Prine, Neha P Raukar, Michael S Smith, Rebecca L Stearns
Exertional heat stroke (EHS) is one of the most common causes of sudden death in athletes. It also represents a unique medical challenge to the prehospital healthcare provider due to the time sensitive nature of treatment. In cases of EHS, when cooling is delayed, there is a significant increase in organ damage, morbidity, and mortality after 30 minutes, faster than the average EMS transport and ED evaluation window. The purpose of this document is to present a paradigm for prehospital healthcare systems to minimize the risk of morbidity and mortality for EHS patients...
January 16, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29332471/fatal-exertional-heat-stroke-and-american-football-players-the-need-for-regional-heat-safety-guidelines
#3
Andrew J Grundstein, Yuri Hosokawa, Douglas J Casa
CONTEXT:   Weather-based activity modification in athletics is an important way to minimize heat illnesses. However, many commonly used heat-safety guidelines include a uniform set of heat-stress thresholds that do not account for geographic differences in acclimatization. OBJECTIVE:   To determine if heat-related fatalities among American football players occurred on days with unusually stressful weather conditions based on the local climate and to assess the need for regional heat-safety guidelines...
January 13, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29302755/heat-generation-by-ultrasonic-bone-curette-comparing-with-high-speed-drill
#4
Kengo Suzuki, Masahiko Wanibuchi, Yoshihiro Minamida, Yukinori Akiyama, Takeshi Mikami, Masahito Fujishige, Akinori Yamamura, Toshio Nakagawa, Nobuhiro Mikuni
BACKGROUND: Ultrasonic bone curettes have been used as with high-speed drills. However, the amount of heat generated by the ultrasonic bone curette is not well known. This study quantitatively assessed the heat generated by an ultrasonic bone curette and compared it to that by a high-speed drill. METHODS: The thermal change in a swine skull during bone curetting using an ultrasonic device and a high-speed drill were assessed. The investigation focused on the type of surgical manipulation (brush-like strokes vs...
January 4, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29290060/effect-of-injection-pressure-on-performance-emission-and-combustion-characteristics-of-diesel-acetylene-fuelled-single-cylinder-stationary-ci-engine
#5
Anmesh Kumar Srivastava, Shyam Lal Soni, Dilip Sharma, Narayan Lal Jain
In this paper, the effect of injection pressure on the performance, emission, and combustion characteristics of a diesel-acetylene fuelled single cylinder, four-stroke, direct injection (DI) diesel engine with a rated power of 3.5 kW at a rated speed of 1500 rpm was studied. Experiments were performed in dual-fuel mode at four different injection pressures of 180, 190, 200, and 210 bar with a flow rate of 120 LPH of acetylene and results were compared with that of baseline diesel operation. Experimental results showed that highest brake thermal efficiency of 27...
December 30, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29286452/esophageal-heat-transfer-for-patient-temperature-control-and-targeted-temperature-management
#6
Melissa I Naiman, Maria Gray, Joseph Haymore, Ahmed F Hegazy, Andrej Markota, Neeraj Badjatia, Erik B Kulstad
Controlling patient temperature is important for a wide variety of clinical conditions. Cooling to normal or below normal body temperature is often performed for neuroprotection after ischemic insult (e.g. hemorrhagic stroke, subarachnoid hemorrhage, cardiac arrest, or other hypoxic injury). Cooling from febrile states treats fever and reduces the negative effects of hyperthermia on injured neurons. Patients are warmed in the operating room to prevent inadvertent perioperative hypothermia, which is known to cause increased blood loss, wound infections, and myocardial injury, while also prolonging recovery time...
November 21, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29279936/heat-stroke
#7
Alan N Peiris, Sarah Jaroudi, Rabiya Noor
No abstract text is available yet for this article.
December 26, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29241068/long-term-projections-of-temperature-related-mortality-risks-for-ischemic-stroke-hemorrhagic-stroke-and-acute-ischemic-heart-disease-under-changing-climate-in-beijing-china
#8
Tiantian Li, Radley M Horton, Daniel A Bader, Fangchao Liu, Qinghua Sun, Patrick L Kinney
BACKGROUND: Changing climates have been causing variations in the number of global ischemic heart disease and stroke incidences, and will continue to affect disease occurrence in the future. OBJECTIVES: To project temperature-related mortality for acute ischemic heart disease, and ischemic and hemorrhagic stroke with concomitant climate warming. METHODS: We estimated the exposure-response relationship between daily cause-specific mortality and daily mean temperature in Beijing...
December 11, 2017: Environment International
https://www.readbyqxmd.com/read/29227612/dead-heat-treating-exertional-heat-stroke-is-a-race-against-time-and-temperature
#9
Neha Raukar, Renée S Lemieux, Douglas J Casa, Rachel K Katch
No abstract text is available yet for this article.
May 2017: JEMS: a Journal of Emergency Medical Services
https://www.readbyqxmd.com/read/29201197/calcitonin-gene-related-peptide-has-protective-effect-on-brain-injury-induced-by-heat-stroke-in-rats
#10
Cheng-Xiang Lu, Ting Qiu, Zhi-Feng Liu, Lei Su, Biao Cheng
Heat stroke often leads to multiple organ dysfunction syndrome (MODS) with a neurological morbidity of 30%. Current studies suggested that pathophysiological responses to heat stroke may be due to a systemic inflammatory response syndrome and a series of peptidergic nerve reactions. The mechanisms underlying the high neurological morbidity in heat stroke have remained largely elusive. In recent years, calcitonin gene-related peptide (CGRP) has been considered to have a positive role in central nervous system injury...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29154695/an-evaluation-of-portable-wet-bulb-globe-temperature-monitor-accuracy
#11
Earl Cooper, Andrew Grundstein, Adam Rosen, Jessica Miles, Jupil Ko, Patrick Curry
CONTEXT:   Wet bulb globe temperature (WBGT) is the gold standard for assessing environmental heat stress during physical activity. Many manufacturers of commercially available instruments fail to report WBGT accuracy. OBJECTIVE:   To determine the accuracy of several commercially available WBGT monitors compared with a standardized reference device. DESIGN:   Observational study. SETTING:   Field test. PATIENTS OR OTHER PARTICIPANTS:   Six commercially available WBGT devices...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29152211/xenon-helium-gas-mixture-at-equimolar-concentration-of-37-5-protects-against-oxygen-and-glucose-deprivation-induced-injury-and-inhibits-tissue-plasminogen-activator
#12
Hélène N David, Benoit Haelewyn, Jean-Éric Blatteau, Jean-Jacques Risso, Nicolas Vallée, Jacques H Abraini
Xenon (Xe) is considered to be the golden standard neuroprotective gas. However, Xe has a higher molecular weight and lower thermal conductivity and specific heat than those of nitrogen, the main diluent of oxygen in air. These physical characteristics could impair or at least reduce the intrinsic neuroprotective action of Xe by increasing the patient's respiratory workload and body temperature. In contrast, helium (He) is a cost-efficient gas with a lower molecular weight and higher thermal conductivity and specific heat than those of nitrogen, but is far less potent than Xe...
July 2017: Medical Gas Research
https://www.readbyqxmd.com/read/29124059/evaluation-of-three-hydration-strategies-in-detection-dogs-working-in-a-hot-environment
#13
Cynthia M Otto, Elizabeth Hare, Jess L Nord, Shannon M Palermo, Kathleen M Kelsey, Tracy A Darling, Kasey Schmidt, Destiny Coleman
Physical activity in hot environments can increase the risk of heat stress or heat stroke in dogs. Heat tolerance is influenced by acclimatization to the environment, physical fitness, and hydration state. Three common strategies to promote hydration in working dogs are free access to water (W), oral electrolyte solutions (OESs), and administration of subcutaneous fluids (SQs). None of these methods have been compared for safety or efficacy in a working environment. In a cross-over design, seven vehicle-screening canines were randomly assigned to each of the three hydration strategies during working shifts at the Sarita, TX checkpoint...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/29123835/ambulance-dispatches-to-schools-during-a-5-year-period-in-fukui-prefecture
#14
Yoshikazu Takinami, Shinji Maeda
Aim: To determine the characteristics and trends of medical emergencies during school activities by analyzing information provided by fire departments. Methods: During a 5-year period from January 2009 to December 2013, all nine fire departments in Fukui Prefecture handled 850 emergencies at schools. We investigated the 850 cases with the age range of 0-63 years. Results: It was found that 21.5% of ambulance dispatches to schools were on weekends and there were more dispatches for non-faculty members of all age groups on weekends than on weekdays...
January 2017: Acute Medicine & Surgery
https://www.readbyqxmd.com/read/29101264/increased-coronary-heart-disease-and-stroke-hospitalisations-from-ambient-temperatures-in-ontario
#15
Li Bai, Qiongsi Li, Jun Wang, Eric Lavigne, Antonio Gasparrini, Ray Copes, Abderrahmane Yagouti, Richard T Burnett, Mark S Goldberg, Sabit Cakmak, Hong Chen
OBJECTIVE: To assess the associations between ambient temperatures and hospitalisations for coronary heart disease (CHD) and stroke. METHODS: Our study comprised all residents living in Ontario, Canada, 1996-2013. For each of 14 health regions, we fitted a distributed lag non-linear model to estimate the cold and heat effects on hospitalisations from CHD, acute myocardial infarction (AMI), stroke and ischaemic stroke, respectively. These effects were pooled using a multivariate meta-analysis...
November 3, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29098600/a-model-based-on-the-pennes-bioheat-transfer-equation-is-valid-in-normal-brain-tissue-but-not-brain-tissue-suffering-focal-ischaemia
#16
Thomas Lillicrap, Murat Tahtalı, Andrew Neely, Xiaofei Wang, Andrew Bivard, Christian Lueck
Ischaemic stroke is a major public health issue in both developed and developing nations. Hypothermia is believed to be neuroprotective in cerebral ischaemia. Conversely, elevated brain temperature is associated with poor outcome after ischaemic stroke. Mechanisms of heat exchange in normally-perfused brain are relatively well understood, but these mechanisms have not been studied as extensively during focal cerebral ischaemia. A finite element model (FEM) of heat exchange during focal ischaemia in the human brain was developed, based on the Pennes bioheat equation...
November 2, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/29095276/outcome-and-risk-factors-associated-with-extent-of-central-nervous-system-injury-due-to-exertional-heat-stroke
#17
Mengmeng Yang, Zhi Li, Yan Zhao, Feihu Zhou, Yu Zhang, Jingli Gao, Ting Yin, Xin Hu, Zhi Mao, Jianguo Xiao, Li Wang, Chao Liu, Liqiong Ma, Zhihao Yuan, Jianfei Lv, Haoliang Shen, Peter C Hou, Hongjun Kang
To explore the relationship between the extent of central nervous system (CNS) injury and patient outcomes meanwhile research the potential risk factors associated with neurologic sequelae. In this retrospective cohort study, we analyzed data from 117 consecutive patients (86 survivors, 31 nonsurvivors) with exertional heat stroke (EHS) who had been admitted to intensive care unit (ICU) at 48 Chinese hospitals between April 2003 and July 2015. Extent of CNS injury was dichotomized according to Glasgow coma scale (GCS) score (severe 3-8, not severe 9-15)...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29094038/intracorporeal-heat-distribution-from-fully-implantable-energy-sources-for-mechanical-circulatory-support-a-computational-proof-of-concept-study
#18
Jacopo Biasetti, Aliaksei Pustavoitau, Pier Giorgio Spazzini
Mechanical circulatory support devices, such as total artificial hearts and left ventricular assist devices, rely on external energy sources for their continuous operation. Clinically approved power supplies rely on percutaneous cables connecting an external energy source to the implanted device with the associated risk of infections. One alternative, investigated in the 70s and 80s, employs a fully implanted nuclear power source. The heat generated by the nuclear decay can be converted into electricity to power circulatory support devices...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29084063/central-vertigo
#19
Jeong-Yoon Choi, Seung-Han Lee, Ji-Soo Kim
PURPOSE OF REVIEW: This review considers recent advances in central vertigo in terms of clinical and laboratory features and pathophysiology. RECENT FINDINGS: Strokes presenting dizziness-vertigo are more likely to be associated with a misdiagnosis in the emergency setting. The risk of future strokes after discharge is higher in patients diagnosed with peripheral vertigo than in control patients. Strokes and transient ischemic attacks account for one-quarter of acute transient vestibular syndrome...
February 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29071978/-effect-of-xingnao-kaiqiao-zhenfa-acupuncture-technique-for-restoring-consciousness-combined-with-rehabilitation-training-on-nerve-repair-and-expression-of-growth-associated-protein-43-of-peri-ischemic-cortex-in-ischemic-stroke-rats
#20
Lei Xu, Xing-Zhou Yan, Zhen-Yu Li, Xiao-Fang Cao, Min Wang
OBJECTIVE: To observe the effect of "Xingnao Kaiqiao Zhenfa" (acupuncture technique for restoring consciousness) combined with enriched rehabilitation training on motor function and expression of growth-associated protein-43 (GAP-43) of peri-ischemic cortex in ischemic stroke rats, so as to investigate its mechanism underlying improvement of ischemic stroke. METHODS: SD rats were randomly divided into sham operation, model, rehabilitation and comprehensive rehabilitation groups, which were further divided into 3 time-points:7, 14 and 21 d (n=6 in each)...
June 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
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