What effect does intravenous infusion of large amounts of normal saline have on urine output?

Urine is a way for the human body to excrete excess water and other useless metabolic products. It is an important part of the human circulatory system. Urine can also reflect a person's physical health. Under normal circumstances, urine is transparent or light yellow, and the occurrence of illness will cause the urine to become particularly yellow or even red. Some people will inject a large amount of saline into their veins, which will have an impact on the body's urine volume. The following will introduce the impact.

Influence:

1. It increases the water content in the blood, dilutes the blood, and increases the amount of urine excreted by the human body. The kidneys maintain water balance in the body by producing urine. Urine is produced from plasma through three processes: glomerular filtration, tubular reabsorption, and tubular excretion and secretion. In these three processes, in addition to producing urine, the kidneys also regulate the amount of urine according to the amount of water in the body, thereby maintaining water balance and maintaining normal human life.

2. It increases the blood volume in human blood vessels and raises blood pressure. Blood pressure refers to the lateral pressure per unit area exerted on the blood vessel wall when blood flows in the blood vessels. Factors that affect blood pressure mainly increase or decrease blood volume, or dilate or constrict blood vessels, or both.

The main functions of normal saline are as follows. First, normal saline is often used as a solute to dissolve other drugs, such as antibiotics and other injectable drugs, and works by acting as a lysozyme. For example, most of the current infusion treatments use normal saline to dissolve and infuse. Second, normal saline is mainly composed of sodium chloride, sodium ions and chloride ions. It is mainly used in medicines, such as oral rehydration salts, etc., to replenish body fluids and maintain electrolyte balance. Third, normal saline can be used for external washing. For example, after a wound is injured, it can be washed with normal saline to clean, sterilize or inhibit bacteria.

Precautions for saline solution

1. The concentration of salt water should not be too high

If the concentration of salt water is too high, it can easily cause skin irritation, which can lead to skin allergies. Therefore, when applying salt water on your face, you should control it well, so as to minimize some unnecessary damage to the skin caused by the salt water, so as to increase the moisture of the skin.

2. Avoid the area around the eyes

When using saline solution to wash your face, you should avoid using it around the eyes to avoid damaging the conjunctiva.

3. Do not use for a long time

Normal saline solution cannot be used for a long time, because it will cause certain irritation to our skin. If used frequently, it can make the skin dry and thin.

4. Applicable people

Saline facial mask is very suitable for people with oily skin and those who wear makeup every day. It is recommended to use it once a day, but people with dry and neutral skin need to use it every 2-3 days.