The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform
Cynthia A. Stuenkel - One of the best experts on this subject based on the ideXlab platform.
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Subclinical thyroid disorders.
Menopause, 2015Co-Authors: Cynthia A. StuenkelAbstract:Symptoms of the menopause transition—altered cycle length, change in amount of bleeding, sleep disruption, fatigue, mood swings, forgetfulness, Heat Intolerance, and palpitations—can also reflect thyroid dysfunction, common in midlife women. Although many clinicians are familiar with diagnosis and m
Ran Yanovich - One of the best experts on this subject based on the ideXlab platform.
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When Should a Heat-Tolerance Test Be Scheduled After Clinical Recovery From an Exertional Heat Illness?
Journal of athletic training, 2020Co-Authors: Haggai Schermann, Yoram Epstein, Shir Hazut-krauthammer, Yael Weksler, Sagi Spitzer, Gary Kalmanovich, Ran YanovichAbstract:Objective Researchers have produced a hypothesis of transient Heat Intolerance (HI) after exertional Heat stroke (EHS). Based on this hypothesis, Heat-tolerance testing (HTT) has been postponed unt...
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Physiological Differences Between Heat Tolerant and Heat Intolerant Young Healthy Women.
Research quarterly for exercise and sport, 2019Co-Authors: Ran Yanovich, Itay Ketko, Jeni Muginshtein-simkovitch, Einat Yanovich, Uri Eliyahu, Chen Fleischmann, Danit Atias-varon, Barliz Waissengrin, Chen Makranz, Yuval HeledAbstract:Purpose: Heat Intolerance (HI) is determined in the Israel Defense Force according to a Heat tolerance test (HTT) before returning to duty after an exertional Heat stroke (EHS) event. Recently, inc...
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The Cardiovascular Reserve Index-A Noninvasive Clinical Insight Into Heat Intolerance.
Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine, 2018Co-Authors: Nathan Schiffmann, Haggai Schermann, Savyon Mazgaoker, Yafim Shaulov, Uri Gabbay, Epstein Y, Ran YanovichAbstract:OBJECTIVE To noninvasively explore the Heat Intolerance condition during exercise-Heat stress by assessing cardiovascular (CV) performance. DESIGN Prospective study of participants undergoing a standard Heat-tolerance test (HTT). SETTING Institutional study. PARTICIPANTS Ninety-five young males: 16 Heat-intolerant (HI) and 79 Heat-tolerant (HT). INTERVENTIONS Cardiovascular performance during an HTT was estimated by heart rate (HR) and blood pressure measurements. MAIN OUTCOME MEASURES The sensitivity of the cardiovascular reserve index (CVRI) and the dynamic heart rate reserve (dHRR) index to predict Heat Intolerance was compared. RESULTS A significant difference in the CV reserve during exercise-Heat stress was exhibited between the HI and the HT groups. Starting at a similar level, the reduction in the CV reserve at HTT endpoint was much greater in the HI than the HT individuals (P 90%) region of its receiver operating characteristic curve is higher (93.2 vs 76.8). CONCLUSIONS More than being a predictor, the CVRI may provide a new clinical insight into Heat Intolerance because it noninvasively characterizes the efficiency of an individual's thermoregulatory mechanism and hints that an impaired CV reserve might underlie Heat Intolerance. The CVRI provides a noninvasive measurement of thermoregulation, which has been long awaited to enable on-field studies and dynamic monitoring of Heat-exposed task forces.
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Probability of Heat Intolerance: Standardized Interpretation of Heat-Tolerance Testing Results Versus Specialist Judgment.
Journal of athletic training, 2018Co-Authors: Haggai Schermann, Gary Kalmanovich, Itay Ketko, Einat Yanovich, Erin Craig, Ran YanovichAbstract:Context: The Heat-tolerance test (HTT) is a screening tool for secondary prevention of exertional Heat illness by the Israel Defense Forces. To discern participant tolerance, recruits are exposed ...
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Return to duty/play after exertional Heat injury: do we have all the answers? A lesson from two case studies
Disaster and military medicine, 2015Co-Authors: Itay Ketko, Yoram Epstein, Ran Yanovich, Amit Druyan, Yuval HeledAbstract:The common practice in the Israel defense Forces is that exertional Heat related injury patients undergo a Heat tolerance test 6–8 weeks post event as part of the “return to duty” process. In the case of a positive Heat tolerance test the individual is classified as Heat intolerant, in some cases however, the thermoregulatory recovery may be longer (several months), and therefore a second Heat tolerance test is scheduled 6-8 weeks later. The presented case reports emphasize the possibility of different recovery periods of the thermoregulatory center and the distinction between congenital and acquired physiological Heat Intolerance. Two young healthy males (A and B) were diagnosed with exertional Heat related injury during a pre-recruitment sorting process. Both underwent a Heat tolerance test, and were found Heat intolerant. During the next months they repeated the test several times. Patient A was finally diagnosed as Heat tolerant and patient B was diagnosed as Heat intolerant. Susceptibility to Heat is a significant determinant for active young people such as athletes and soldiers. Both cases emphasize the importance of the Heat tolerance test (and repeated test when needed) as a criteria for an exertional Heat related injury patient to return to duty/play and to perform intense physical activities. These cases also emphasize the effectiveness and sensitivity of the test in identifying a temporary and a permanent state of Heat Intolerance.
H L Chan - One of the best experts on this subject based on the ideXlab platform.
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Acquired generalized hypohidrosis/anhidrosis with subclinical Sjögren's syndrome: report of a case with diffuse syringolymphoid hyperplasia and lymphocytic sialadenitis.
Journal of the American Academy of Dermatology, 1996Co-Authors: C L Huang, T T Kuo, H L ChanAbstract:The pathogenesis and the underlying pathologic changes of acquired generalized hypohidrosis/anhidrosis (AGHA) are largely unknown. We studied a case of AGHA in a young woman suffering from Heat Intolerance and progressive loss of sweating. Pathologic study of affected skin revealed unique syringolymphoid hyperplasia with T cell infiltration, suggesting a T cell-mediated autoimmune disease. The patient also had subclinical Sjögren's syndrome and diffuse hair loss. The pathogenesis of the latter two conditions is believed to be related to the patient's AGHA.
Yoram Epstein - One of the best experts on this subject based on the ideXlab platform.
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When Should a Heat-Tolerance Test Be Scheduled After Clinical Recovery From an Exertional Heat Illness?
Journal of athletic training, 2020Co-Authors: Haggai Schermann, Yoram Epstein, Shir Hazut-krauthammer, Yael Weksler, Sagi Spitzer, Gary Kalmanovich, Ran YanovichAbstract:Objective Researchers have produced a hypothesis of transient Heat Intolerance (HI) after exertional Heat stroke (EHS). Based on this hypothesis, Heat-tolerance testing (HTT) has been postponed unt...
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Return to duty/play after exertional Heat injury: do we have all the answers? A lesson from two case studies
Disaster and military medicine, 2015Co-Authors: Itay Ketko, Yoram Epstein, Ran Yanovich, Amit Druyan, Yuval HeledAbstract:The common practice in the Israel defense Forces is that exertional Heat related injury patients undergo a Heat tolerance test 6–8 weeks post event as part of the “return to duty” process. In the case of a positive Heat tolerance test the individual is classified as Heat intolerant, in some cases however, the thermoregulatory recovery may be longer (several months), and therefore a second Heat tolerance test is scheduled 6-8 weeks later. The presented case reports emphasize the possibility of different recovery periods of the thermoregulatory center and the distinction between congenital and acquired physiological Heat Intolerance. Two young healthy males (A and B) were diagnosed with exertional Heat related injury during a pre-recruitment sorting process. Both underwent a Heat tolerance test, and were found Heat intolerant. During the next months they repeated the test several times. Patient A was finally diagnosed as Heat tolerant and patient B was diagnosed as Heat intolerant. Susceptibility to Heat is a significant determinant for active young people such as athletes and soldiers. Both cases emphasize the importance of the Heat tolerance test (and repeated test when needed) as a criteria for an exertional Heat related injury patient to return to duty/play and to perform intense physical activities. These cases also emphasize the effectiveness and sensitivity of the test in identifying a temporary and a permanent state of Heat Intolerance.
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Heat tolerance in women--reconsidering the criteria.
Aviation space and environmental medicine, 2012Co-Authors: Amit Druyan, Yoram Epstein, Ran Yanovich, Daniel S. Moran, Chen Makranz, Yuval HeledAbstract:INTRODUCTION: Exertional Heat stroke (EHS) is the most dangerous Heat-related injury. EHS may be followed by a state of Heat Intolerance. The Israeli Defense Forces (IDF) performs Heat tolerance tests (HTT) to all Heat injury victims 6-8 wk following injury as part of the "return to duty" process. The HTT protocol and normal values are based on vast experience with young healthy men. Over the last several years an increasing number of female soldiers have been joining combat units. Heat injuries and, thus, HTT among women have become more frequent. Due to potential gender-related physiological and thermoregulatory differences, we examined the necessity for validating the HTT protocol for women. METHODS: Retrospective physiological data from our database on Heat injuries and HTT between the years 2008-2010 was compared between 9 female subjects and 170 male subjects who had similar background characteristics. RESULTS: Defining Heat Intolerance as peak rectal temperature > 38.5 degrees C, peak heart rate > 150 bpm, or the inability to reach equilibrium in these values, we diagnosed 67% of the female subjects as Heat intolerant. In the male subjects, only 26% were diagnosed as Heat intolerant using the same criteria. CONCLUSIONS: Using the standard HTT criteria, women are more frequently diagnosed as Heat intolerant than men. Further studies should be performed in order to re-evaluate the normal values for a "female HTT" in order to optimize the process of safe return to duty of female Heat injury victims and to minimize false positive results among female soldiers. Language: en
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Heat Intolerance in Patients With Chronic Schizophrenia Maintained With Antipsychotic Drugs
The American journal of psychiatry, 2000Co-Authors: Haggai Hermesh, Yoram Epstein, Roni Shiloh, Hillel Manaim, Abraham Weizman, Hanan MunitzAbstract:OBJECTIVE: Schizophrenia may be associated with hyperthermic syndromes such as febrile catatonia, neuroleptic malignant syndrome, and Heatstroke. The authors hypothesized that an exercise-Heat tolerance test would disclose abnormal thermoregulation in schizophrenic patients. METHOD: Seven male schizophrenic outpatients in remission maintained on depot antipsychotic treatment and eight healthy comparison subjects completed a Heat tolerance test that consisted of two 50-minute bouts of walking a motor-driven treadmill at 40×C (relative humidity=40%). RESULTS: A significantly higher rise in rectal and skin temperatures was observed in the patient group. No differences in heart rate, blood pressure, or perspiration were detected. CONCLUSIONS: Schizophrenic patients maintained on antipsychotic drugs exhibit impaired Heat tolerance. Possible explanations are a reduced ability to convey Heat from the body’s core to the periphery with or without excessive Heat production. The hyperthermic response to the Heat tol...
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Are psoriatic patients at risk of Heat Intolerance
The British journal of dermatology, 1991Co-Authors: E. Leibowitz, Y. Shapiro, Daniel S. Seidman, Arie Laor, Yoram EpsteinAbstract:Sixteen young male subjects with psoriasis (mean of 4.9% of skin surface area involvement) and 10 healthy controls underwent a Heat exercise test (40 degrees C, 40% r.h.) for 2 h. Rectal temperature (Tr), mean skin temperature (Tsk), heart rate (HR) and Heat storage (dS) were measured and calculated. A sharper rise was found for all parameters in the psoriatic patients as compared with controls. Statistically significant differences were found in Tr after 60 min (37.9 +/- 0.1 degrees C and 37.5 +/- 0.1 degrees C in patients and controls, respectively) and at termination of the exercise (38.3 +/- 0.1 degrees C and 37.5 +/- 0.1 degrees C). Heat storage at the end of the first hour was 78 +/- 9 and 30 +/- 7 kcal in patients and controls, respectively. At the end of 120 min, Heat storage in the study group increased to 87 +/- 14 kcal, while the control group stored only 30 +/- 7 kcal. Sweat rate was lower in the psoriatic patients (590 +/- 49 g/h) than in controls (691 +/- 42 g/h), even when corrected for healthy skin area (337 +/- 26 g/h/m2 compared with 370 +/- 24 g/h/m2). It is suggested that psoriatic patients have a reduced ability to dissipate extra Heat during exposure to exercise in the Heat. Psoriasis should therefore be considered as a risk factor for Heat Intolerance.
Hengleong Chan - One of the best experts on this subject based on the ideXlab platform.
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acquired generalized hypohidrosis anhidrosis with subclinical sjogren s syndrome report of a case with diffuse syringolymphoid hyperplasia and lymphocytic sialadenitis
Journal of The American Academy of Dermatology, 1996Co-Authors: Chungli Huang, Tsengtong Kuo, Hengleong ChanAbstract:The pathogenesis and the underlying pathologic changes of acquired generalized hypohidrosis/anhidrosis (AGHA) are largely unknown. We studied a case of AGHA in a young woman suffering from Heat Intolerance and progressive loss of sweating. Pathologic study of affected skin revealed unique syringolymphoid hyperplasia with T cell infiltration, suggesting a T cell-mediated autoimmune disease. The patient also had subclinical Sjogren's syndrome and diffuse hair loss. The pathogenesis of the latter two conditions is believed to be related to the patient's AGHA.
