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Thermal Stressors
Published in W. David Yates, Safety Professional’s, 2015
Heat syncope is fainting as a result of exposure to heat. It is caused by mild overheating with inadequate water or salt. The signs and symptoms of heat syncope include blurred vision, fainting, and normal body temperature. The main cause of heat syncope is pooling of blood in the legs and skin from prolonged static posture and heat exposure. To prevent heat syncope, it is important to flex the leg muscles several times before moving and stand or sit up slowly. Should heat syncope occur, have the affected employee lie on their back in a cool environment and drink water.
Thermal Stressors
Published in W. David Yates, Safety Professional’s Reference and Study Guide, 2020
Heat syncope is fainting as a result of exposure to heat. It is caused by mild overheating with inadequate water or salt. The signs and symptoms of heat syncope include blurred vision, fainting, and normal body temperature. The main cause of heat syncope is pooling of blood in the legs and skin from prolonged static posture and heat exposure. To prevent heat syncope, it is important to flex the leg muscles several times before moving and stand or sit up slowly. Should heat syncope occur, have the affected employee lie on their back in a cool environment and drink water.
Human Heat Illness and Prevention
Published in Ken Parsons, Human Heat Stress, 2019
The treatment is to remove the patient to a cooler area and rest in a recumbent position. Recovery should be prompt and complete. Heat syncope should be prevented by acclimatization and, if possible, clothing design to allow evaporation of sweat and allowing intermittent activity to assist venous return to the heart.
Technical textiles for military applications
Published in The Journal of The Textile Institute, 2020
R. G Revaiah, T. M. Kotresh, Balasubramanian Kandasubramanian
Heat Syncope (Tw et al., 2014): Syncope is third stage of heat illness, and a medical term for fainting. It is also referred to as orthostatic dizziness, occurs due to peripheral vasodilation. Heat syncope generally leads to dizziness or fainting due to prolonged exposure to heat during the initial days of heat acclimatization. It occurs due to prolonged standing without movement, or sudden standing from sitting or lying position in the heat. When standing for longer time with scant muscular activity, temporary pooling of blood takes place near feet area. The temporary lack of blood in heart region therefore, leads to inadequate supply of blood to the brain for a fraction of time, leading to syncope. To prevent heat syncope, the individuals should slowly enhance work endurance in heat over 10–14 days of acclimatization period. Heat syncope can be treated by moving the patient to a shaded area, rehydrating with sports drink and making the patient lie in feet elevated position to promote blood returning to the torso.