Rewarming Shock

	Rewarming Shock Rewarming shock (also known as rewarming collapse) has been described as a drop in blood pressure following the warming of a person who is very cold. The real cause of this rewarming shock is unknown. There was a theoretical concern that external rewarming rather than internal rewarming may increase the risk. These concerns were partly believed to be due to afterdrop Afterdrop is a continued cooling of a patient's core temperature during the initial stages of rewarming from hypothermia. Afterdrop is attributed to the return of cold blood to extremities from the core due to peripheral vasodilatation, thus causin ..., a situation detected during laboratory experiments where there is a continued decrease in core temperature after rewarming has been started. Recent studies have not supported these concerns, and problems are not found with active external rewarming. References Medical emergencies {{med-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Blood Pressure Blood pressure (BP) is the pressure of circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term "blood pressure" refers to the pressure in the large arteries. Blood pressure is usually expressed in terms of the systolic pressure (maximum pressure during one heartbeat) over diastolic pressure (minimum pressure between two heartbeats) in the cardiac cycle. It is measured in millimeters of mercury ( mmHg) above the surrounding atmospheric pressure. Blood pressure is one of the vital signs—together with respiratory rate, heart rate, oxygen saturation, and body temperature—that healthcare professionals use in evaluating a patient's health. Normal resting blood pressure, in an adult is approximately systolic over diastolic, denoted as "120/80 mmHg". Globally, the average blood pressure, age standardized, has remained about the same since 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Hypothermia Hypothermia is defined as a body core temperature below in humans. Symptoms depend on the temperature. In mild hypothermia, there is shivering and mental confusion. In moderate hypothermia, shivering stops and confusion increases. In severe hypothermia, there may be hallucinations and paradoxical undressing, in which a person removes their clothing, as well as an increased risk of the heart stopping. Hypothermia has two main types of causes. It classically occurs from exposure to cold weather and cold water immersion. It may also occur from any condition that decreases heat production or increases heat loss. Commonly, this includes alcohol intoxication but may also include low blood sugar, anorexia and advanced age. Body temperature is usually maintained near a constant level of through thermoregulation. Efforts to increase body temperature involve shivering, increased voluntary activity, and putting on warmer clothing. Hypothermia may be diagnosed based on either a person ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Afterdrop Afterdrop is a continued cooling of a patient's core temperature during the initial stages of rewarming from hypothermia. Afterdrop is attributed to the return of cold blood to extremities from the core due to peripheral vasodilatation, thus causing a further decrease of deep body temperature. However a second theory explains afterdrop as a side effect of conductive heat transfer Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, .... "The hypothermic patient cools from the outside in. Consequently, a heat gradient is established from the relatively warm core to the cool periphery. This heat gradient does not reverse immediately upon initiation of rewarming. Until the gradient is reversed, further heat transfer occurs from the warmer core to cooler peripheral tissues." In severe cases, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]