Содержание
- 2. When the temperature plummets, hypothermia becomes a danger. Hypothermia is a medical emergency in which the
- 3. The rate of hypothermia-related deaths in the U.S. increases with age (shown per 100,000 population; data
- 5. Under normal conditions, body temperature is tightly regulated by balancing heat production and dissipation. Basal metabolic
- 6. The clinical presentation of hypothermia depends upon the patient’s core temperature. In mild hypothermia, patients present
- 7. In severe hypothermia, patients present in a coma, with apnea, fibrillation progressing to asystole, and limited
- 8. Hypothermia impairs the functioning of the body’s organ systems. The central nervous system response to hypothermia
- 9. Peripheral vasoconstriction shunts blood to the core, producing a relative increase in preglomerular pressure. This reduces
- 10. A middle-aged man is found lying on the street in the snow in front of his
- 12. This patient clearly has hypothermia, as evidenced by his rectal temperature. All patients with altered mental
- 13. An electrocardiogram (ECG) is obtained on our patient (shown), revealing sinus bradycardia with a rate in
- 14. The initial cardiovascular response to hypothermia is tachycardia as a component of increased metabolic rate, and
- 15. Several ECG findings are associated with hypothermia(shown). Muscle tremor artifact may be present and may be
- 16. The definitive treatment for hypothermia is rewarming of the patient. Rewarming approaches are categorized as “passive
- 17. Passive external rewarming focuses on reducing heat loss and allowing normal physiologic compensatory mechanisms to arrest
- 18. Active external rewarming methods typically involve providing heat to body surfaces. As such, severe peripheral vasoconstriction
- 20. With peripheral warming and vasodilation, cooler blood may circulate to the core, resulting in an initial
- 22. Active internal rewarming methods aim to directly increase core temperature and are divided into noninvasive approaches
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