What is heatstroke?

Heatstroke refers to the symptoms of disorder of body temperature regulation, disorder of water and electrolyte metabolism and impairment of nervous system function under the long-term effect of high temperature and thermal radiation. Patients with brain diseases, the elderly and the infirm, and women with poor heat tolerance are particularly prone to heatstroke.

Enter the topic of heatstroke

The cause of disease

There are many reasons for heatstroke. If you work in a workshop with high temperature and poor ventilation, it is easy to get heatstroke. In agriculture and open-air operations, the direct exposure of the sun, coupled with the exposure of the earth, makes the atmospheric temperature rise again, making people's meninges congested and cerebral cortex ischemic, causing heatstroke, and the increase of humidity in the air is easy to induce heatstroke; In public places and families, people are crowded and concentrated, heat production is concentrated, and heat dissipation is difficult.

symptom

1, fever, fatigue, burning skin, dizziness, nausea, vomiting and chest tightness.

2, irritability, rapid pulse, blood pressure drop.

3. Severe patients may have severe headache, fainting, coma and spasm.

Clinical classification

1, threatened heatstroke: sweating, thirst, fatigue, dizziness, dizziness, tinnitus, nausea, palpitation, inattention, numbness of limbs, etc. In high temperature environment, the body temperature does not exceed 38℃.

2. Mild heatstroke: the above symptoms are aggravated, the body temperature is above 38℃, facial flushing is pale, sweating, the skin is wet and cold, the pulse is weak, the heart rate is fast, the blood pressure drops, respiratory and circulatory failure and other symptoms and signs.

3. Severe heatstroke:

(l) Heatstroke and high fever: dysfunction of the thermoregulatory center, difficulty in heat dissipation and excessive heat accumulation in the body. At first, I had symptoms of threatened heatstroke, and then I had headache, anxiety, lethargy and even coma. Flushing face and dry skin. Blood pressure drops, shortness of breath, and heart rate increases. The body temperature is above 40℃.

(2) heatstroke failure: water and salt are lost due to excessive sweating, and blood volume is insufficient. The clinical manifestations are pale face, cold skin, weak pulse, low blood pressure, shortness of breath, unconsciousness, low axillary temperature and anal temperature of about 38.5℃.

(3) heatstroke spasm: After sweating a lot, you only drink plenty of water and don't supplement salt, so the blood sodium and chlorine are reduced, and the blood potassium can also be reduced. The patient is thirsty and has little urine. Muscle spasm and pain, normal body temperature.

(4) Heatstroke: Due to the strong sunlight in the head, a large amount of ultraviolet rays enter the skull, which raises the intracranial temperature (up to 465,438+0 ~ 42℃), resulting in edema and congestion of the brain and meninges. Therefore, there will be severe headache, dizziness, nausea, vomiting, tinnitus, dizziness, irritability, disturbance of consciousness and severe convulsions and coma. The body temperature can be slightly raised. The above situations can sometimes appear in combination.