731 results match your criteria: "Cooling Techniques for Hyperthermia"

Article Synopsis
  • * 32 healthy participants engaged in an exercise test at a temperature of 30.5°C, and various physiological and subjective measures, such as time to exhaustion and thermal sensation, were recorded.
  • * Results showed no significant difference in time to exhaustion among the different garments, with synthetic and cotton shirts performing similarly in terms of comfort and thermoregulation, while the cooling vest was heavier and less comfortable despite providing some cooling benefits.
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Article Synopsis
  • * Examination of the particles' properties showed a Morin transition and blocking temperature, with zeta potential measurements indicating good stability and surface charge around +46.8 mV.
  • * Viability tests on Vero and HeLa cell lines, alongside hyperthermia studies, demonstrated significant temperature increases (up to 48.3°C) and specific loss powers, indicating the nanoparticles' potential for therapeutic applications despite their low magnetization.
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Return to Duty Following Exertional Heat Stroke: A Review.

Mil Med

May 2024

Special Warfare Training Wing, Special Warfare Human Performance Support Group, JBSA-Lackland, TX 78236, USA.

Article Synopsis
  • Exertional Heat Stroke (EHS) is a serious condition affecting military personnel due to extreme heat and central nervous system changes, highlighting the need for better recovery guidelines after such events.
  • The authors conducted a literature review, identifying 21 relevant articles discussing best practices for returning to duty (RTD) and the importance of heat tolerance testing (HTT).
  • Rapid treatment of EHS is crucial to prevent long-term damage, and while various RTD protocols exist, no universal heat tolerance assessment has been established, necessitating a comprehensive approach by medical staff.
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Tarp-Assisted Cooling for Exertional Heat Stroke Treatment in Wildland Firefighting.

Wilderness Environ Med

December 2023

Center for Research and Education in Special Environments, Department of Exercise and Nutrition Sciences, University at Buffalo, Buffalo, NY.

Article Synopsis
  • Exertional heat stroke is a serious medical emergency that requires quick cooling methods, and this study examines whether tarp-assisted cooling could be as effective as standard wilderness cooling techniques used by wildland firefighters.
  • The study involved 17 healthy participants exercising in hot conditions, followed by cooling using either tarp-assisted methods or the current standard care, measuring the rates at which their core temperatures dropped.
  • Results showed that tarp-assisted cooling was not faster than current standard care in reducing body temperature and both methods were slower than traditional cold water immersion, which is the most effective treatment for exertional heat stroke.
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Elevated brain temperature under severe heat exposure impairs cortical motor activity and executive function.

J Sport Health Sci

March 2024

Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore. Electronic address:

Article Synopsis
  • Excessive heat exposure can cause hyperthermia, negatively impacting physical performance and cognitive functions, but the specific effects on brain physiology remain largely unknown.
  • In a study with eleven healthy participants, heat stress was induced through exercise or warm water immersion, and their brain activity and temperatures were monitored using MRI techniques.
  • The results showed that hyperthermia led to reduced brain activity in the motor cortex, decreased blood flow in brain regions, and impaired executive functions, although consuming blended ice helped manage temperature and reduced neural disruptions.
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There is a paucity of evidence regarding the utility of targeted temperature management (TTM) in COVID-19 patients who suffer cardiac arrest. This systematic review and meta-analysis aimed to use the available data of how temperature predicts outcomes in COVID-19 patients and the association between active cooling and outcomes in non-COVID-19 cardiac arrest patients to give recommendations for the utility of TTM in COVID-19 survivors of cardiac arrest. The PubMed, Embase, and Web of Science databases were queried in August 2022 for two separate searches: (1) temperature as a predictor of clinical outcomes in COVID-19 and (2) active cooling after return of spontaneous circulation (ROSC) in non-COVID-19.

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After surgery for ovarian cancer or colorectal cancer, residual tumors are left around. A practical way to treat residual tumors is to destroy them with heat by injecting high-temperature drugs into the abdominal cavity. The injected medicinal substances are induced to flow out of the abdominal cavity; then, the spilled drug flows back into the abdominal cavity through feedback.

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Background: There is currently no standard medical device and method available for hyperthermic intraperitoneal therapy studies in rats. In this study, we present our designed device and algorithm that operates based on our own protocol for hyperthermic intraperitoneal treatment in rats. The aim was to demonstrate the effectiveness of the designed device, algorithm, and hyperthermia protocol by showing that the device can achieve the desired temperature inside the rat's abdomen, does not cause rat loss due to complications, operates autonomously, and provides warnings to the operator in case of emergencies.

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Whole-body cooling effectiveness of cold intravenous saline following exercise hyperthermia: a randomized trial.

Am J Emerg Med

October 2023

Exercise Science Research Center, University of Arkansas, Fayetteville, AR, USA; Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital, Dallas, TX, USA. Electronic address:

Introduction: In some athletic, occupational, military and emergency settings, cold intravenous (IV) fluids are used to facilitate whole-body cooling in an effort to treat heat illness. This treatment has anecdotal support, but currently lacks evidence supporting it as a whole-body cooling modality. Other modalities may offer superior cooling rates, and thus, patient outcomes following treatment.

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Introduction: The recommended treatment for exertional heat stroke is immediate, whole-body immersion in < 10 °C water until rectal temperature (T) reaches ≤ 38.6 °C. However, real-time T assessment is not always feasible or available in field settings or emergency situations.

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Background: Hyperthermia (and associated health and performance implications) can be a significant problem for athletes and teams involved in intermittent sports. Quantifying the highest thermal strain (i.e.

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The management of heat-related illness (HRI) in dogs has received limited attention in the veterinary literature, especially regarding effective cooling methods. Guidelines published in 2016 for prehospital management of dogs with HRI advised "cool first, transport second", and recommended using cold-water immersion and evaporative cooling (water application with air movement) as the optimal approaches to reduce the patient's temperature. The current retrospective cross-sectional observation study analysed electronic patient records from the VetCompass programme to describe the cooling methods used in dogs with HRI presented to primary care veterinary practices during 2016-2018.

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Introduction: The temperature control of magnetic hyperthermia therapy mainly relies on circulating water cooling and regulating magnetic field intensity, which increases complexity in clinical applications. Using magnetic materials with appropriate Curie temperature has become an effective means to solve temperature monitoring and potentially achieve self-regulating temperature.

Methods: A self-temperature-regulating FeZrB magnetic material was prepared.

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Background: Exercise-induced hyperthermia preceding the onset of exertional heatstroke requires a rapid reduction in the body core temperature (T) to ensure safety. In recent years, phase-change material (PCM) cooling devices have been increasingly used for rapid cooling after hyperthermia due to their superior capacity for heat absorption.

Objectives: This study aimed to evaluate the cooling performance and effectiveness of a PCM cooling blanket on heart rate (HR) and heart rate variability (HRV) recovery after exercise-induced hyperthermia.

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The cooling effect of blood flow during hyperthermia treatment.

J Therm Biol

May 2023

Mustansiriyah University, College of Engineering, Department of Mechanical Engineering, Baghdad 10047, Iraq.

The amount and duration of the applied heat in hyperthermia treatment are critical for cancer survivors. The challenge is to use a mechanism dealing with the tumor cells only while keeping healthy tissues unharmed. The aim of this paper is to predict the blood temperature distribution in main dimensions during hyperthermia process by deriving a new analytical solution of unsteady flow that adequately covers the cooling factor.

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Purpose: The main aim of the current trial was to explore our hypothesis that cooling head wraps lower the core temperature more effectively than ice packs on the head during forced-air warming after pediatric cardiac surgeries.

Methods: This study was a single-center Randomized Controlled Trial. Participants were children with a weight ≤ 10 kg and hyperthermia during forced-air warming after cardiac surgeries.

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Effect of ice slurry ingestion on thermoregulatory responses during fixed-intensity cycling in humid and dry heat.

Eur J Appl Physiol

October 2023

Human Potential Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, 2 Medical Drive, Singapore, 117593, Singapore.

Purpose: This study examined the thermoregulatory response and ergogenic effects of ice slurry (ICE) ingestion in hot environments with high and low relative humidity (RH).

Methods: Eight males completed four trials in a crossover manner in dry (DRY: 34.7 ± 0.

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Effects of cutaneous administration of an over-the-counter menthol cream during temperate-water immersion for exercise-induced hyperthermia in men.

Front Physiol

May 2023

Integrative Exercise Physiology Laboratory, Department of Physical Education, Jeonbuk National University, Jeonju, Republic of Korea.

Hyperthermia impairs various physiological functions and physical performance. We examined the effects of cutaneous administration with an over-the-counter (OTC) analgesic cream containing 20% methyl salicylate and 6% L-menthol during temperate-water immersion (TWI) for exercise-induced hyperthermia. In a randomized crossover design, twelve healthy males participated in both of two experiments.

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Targeted temperature management (TTM) has been proposed to reduce mortality and improve neurological outcomes in postcardiac arrest and other critically ill patients. TTM implementation may vary considerably among hospitals, and "high-quality TTM" definitions are inconsistent. This systematic literature review in relevant critical care conditions evaluated the approaches to and definitions of TTM quality with respect to fever prevention and the maintenance of precise temperature control.

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Exchange Bias Effect of Ni@(NiO,Ni(OH)) Core/Shell Nanowires Synthesized by Electrochemical Deposition in Nanoporous Alumina Membranes.

Int J Mol Sci

April 2023

Departamento de Física, Facultad de Ciencias, Universidad de Oviedo, C/Federico García Lorca 18, 33007 Oviedo, Spain.

Tuning and controlling the magnetic properties of nanomaterials is crucial to implement new and reliable technologies based on magnetic hyperthermia, spintronics, or sensors, among others. Despite variations in the alloy composition as well as the realization of several post material fabrication treatments, magnetic heterostructures as ferromagnetic/antiferromagnetic coupled layers have been widely used to modify or generate unidirectional magnetic anisotropies. In this work, a pure electrochemical approach has been used to fabricate core (FM)/shell (AFM) Ni@(NiO,Ni(OH)) nanowire arrays, avoiding thermal oxidation procedures incompatible with integrative semiconductor technologies.

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Purpose: In presence of respiratory motion, temperature mapping is altered by in-plane and through-plane displacements between successive acquisitions together with periodic phase variations. Fast 2D Echo Planar Imaging (EPI) sequence can accommodate intra-scan motion, but limited volume coverage and inter-scan motion remain a challenge during free-breathing acquisition since position offsets can arise between the different slices.

Method: To address this limitation, we evaluated a 2D simultaneous multi-slice EPI sequence with multiband (MB) acceleration during radiofrequency ablation on a mobile gel and in the liver of a volunteer (no heating).

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Purpose: MR thermometry (MRT) enables noninvasive temperature monitoring during hyperthermia treatments. MRT is already clinically applied for hyperthermia treatments in the abdomen and extremities, and devices for the head are under development. In order to optimally exploit MRT in all anatomical regions, the best sequence setup and post-processing must be selected, and the accuracy needs to be demonstrated.

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Background: The aim of the study was to investigate the effect of a Finnish sauna on the immune status parameters. The hypothesis was that hyperthermia would improve immune system's functioning by changing the proportion of lymphocyte subpopulations and would activate heat shock proteins. We assumed that the responses of trained and untrained subjects would be different.

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Background: Cold-water immersion is the gold standard for field treatment of an exertional heat stroke (EHS) casualty. Practical limitations may preclude this method and ice sheets (bed linens soaked in ice water) have emerged as a viable alternative. Laboratory studies suggest that this is an inferior method; however, the magnitude of hyperthermia is limited and may underestimate the cooling rate in EHS casualties.

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