Heat exhaustion

Introduction Heatexhaustion: In high temperature or strong heat radiation environment, due to heat caused by peripheral vasodilation and a large number of water loss caused by reduced circulating blood volume, causing temporary intracranial blood supply and fainting. Blood pressure drops, pulse breathing speeds up, sweating a lot, skin becomes cold, blood and intercellular fluid volume decreases, dizziness, collapse and other symptoms. At this time, the body temperature is normal. Physical labor or long-distance running in hot weather may cause heat exhaustion and severe heat stroke. Preventive measures can effectively prevent this disease from happening.

Cause

A lot of sweating in hot weather, although it can prevent the body temperature from rising, but the body loses a lot of water and salt, which will cause the muscles in the legs and body to twitch and the body is weak. If the water and salt are not replenished in time, the condition will deteriorate and the patient may collapse. Other symptoms of heat exhaustion are dizziness, headache, and vomiting. The patient's temperature was normal, the skin was cold and cold, and his face was pale; his breathing and pulse accelerated. Patients with nausea and diarrhea, vomiting, will lose more body fluids, making the situation worse. Move the patient in a cool place, preferably indoors, and then let the patient drink frozen salt water. If the patient is unconscious, set his body to return to the horizontal position, and immediately call the medical staff.

Because of the hot weather, sweating, the body lacks water and salt and collapses. (In fact, a kind of shock) tired and weak, the skin is cold and pale (this is the biggest difference), the pulse speed is weak, headache, dizziness and nausea, emotional anxiety, fainting. (The patient loses water, the blood pressure drops, and the blood can't bring enough oxygen to the brain, so it is effective to save the coma.

an examination

Related inspection

Blood pressure body temperature measurement urine routine

During the summer season, there are exposures or manual labor in high temperature environments, long walks, and field work history. Old, maternal, chronic frail patients can occur under conditions of poor ventilation and excessive fatigue, excessive drinking. First headache, dizziness, nausea, then thirst, chest tightness, pale face, cold sweats, limbs are not warm, breathing fast, confusion or coma, weak or slow pulse, low blood pressure. Diagnosis can be based on the above characteristics.

Differential diagnosis

Differential diagnosis of heat exhaustion:

1. Sunshot disease: When exercising on the beach, hiking or in the hot summer, due to exposure to the sun for too long, the head lacks protection, and suddenly there is high fever, tinnitus, nausea, headache, vomiting, lethargy, and fear of light stimulation. This is a sunshot disease. Serious sun sickness can also kill, do not carelessly, should be taken urgently.

2, hot : heat cramp (heat cramp) is a phenomenon of high temperature heat stroke. Working under dry and hot conditions, sweating excessively, and a lot of NaCl is discharged with sweat, and the limbs and abdominal wall muscles are paralyzed. The patient's temperature does not rise. Supplemental saline can be alleviated. Enthusiasm is usually the first warning of collapse caused by heat. After overwork, the muscles in the arms, legs and abdomen will occur. This is usually caused by lack of body salt (because of excessive sweating, especially insufficient salt). Time).

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