Summer has arrived and dehydration problems need to attract everyone's attention, especially children, the elderly and physically diseases. First, we need to look at some of the basics of dehydration.
Usually rely on human skin, breathing and urination to adjust the balance of moisture. But this balance is based on intake and output balance on can only be achieved if more than exhaust intake, will produce dehydration. Many people know that 60% of the body weight of the composition of the water, but most of the water is inside the cells, or surrounds the cells, only a small portion of the blood vessels inside. Loss of water even if only on a small part of the body may be a lot of water, compared to the volume is. Water lost more than 2%, for a small part of the whole, but it is about a quarter of the blood volume, symptoms began to appear. Thus, the human body is actually very easy to dehydration, stop drinking three days a lot of people can not survive. Disaster relief golden 72 hours is based on this projection is: If there is no serious injury, just trapped, the need to rescue as soon as possible within 72 hours, although otherwise escaped injury, but died of dehydration.
Dehydration causes and manifestations varied, hot, sweating, a lot of movement, vomiting, diarrhea, blood loss, which we all know, but there are some not so well known to be so easy to overlook, such as flying, especially international flights. The main reason is the low altitude and humidity, the other is sleep disruption, discomfort caused by sitting tight irritability, also increase water loss. Some people think that the symptoms of jet lag may be due partially caused by dehydration. Similarly, late at night, they also prone to dehydration. In addition to tangible water loss, such as vomiting, diarrhea and sweating, but also feel a channel of water loss it is also very important, and that is the respiratory tract. There are high school knowledge of chemistry knows every molecule of carbon dioxide exhaled incidentally on a water molecule. Nervous, alcohol poisoning and when some shortness of breath, can lead to dehydration. If a patient with diabetes acidosis, stimulates breathing deepened to speed, will increase dehydration.
Dehydration symptoms vary, and also related to the degree of dehydration. Severe dehydration have coma, decreased blood pressure, and even shock, to require immediate emergency treatment. Mild to moderate dehydration, lightest may be thirsty, have gradually increased fatigue, decreased urine output, dark urine, dry skin, palpitation and so on. Children and the elderly may thirst is not obvious, there is no gradual process, short sudden severe dehydration. To remind everyone that some mood changes, such as irritability, not interested in all things, may also be symptoms of dehydration.
The simplest is to treat dehydration drink plenty of water. Thirst is prompt and accurate dehydrated, most people should just thirsty to drink water again is enough. But not thirsty does not mean no dehydration. I said earlier, is likely to be irritable and even dehydration performance. Usually you can use urine to determine if they are dehydrated. If every thirty-four hours can urinate, and urine color is not deep, the water on the basic balance. A small amount of dehydration, drinking plain water can be, there is no need to supplement what brine. Electrolytes only in severe dehydration when it is taken into account. Do not drink the water, no matter how thirsty we all know this, because the water it contains high sodium chloride, after drinking the not alleviate dehydration, but heavier. But there are many inspirational stories to drink urine to survive in extreme cases, it is also misleading. In fact, the urine inside the salt concentration and the sea is like a lot of survival guides are not recommended to drink urine to survive.
Alcoholic beverages for dehydration is absolutely prohibited. Because alcohol and its metabolites have toxic to humans in itself, since it is toxic, the human body will find a way to flush them out, way is through the urine. The renal excretion of toxins at the same time it must also discharge some water, so aggravating dehydration. In addition, alcohol metabolism in the liver, we also need a lot of water molecules participate, further aggravating dehydration. As a result, some stay up late watching the game of high tension, high salt while eating barbecue, drinking beer refreshing and gentlemen, we require a high degree beware of the risk of dehydration. If it is difficult to resist the temptation of food and game, at least into drinking it. (Author: lw56102 is healthy Chinese web editor, popular science author)
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