Why should the liquid medicine in the syringe be shot off before injection

summary

Now injection is a very common thing in life. If you pay attention to injection, you will find that nurses often shoot a little liquid medicine out of the syringe before injection. Why.

Why should the liquid medicine in the syringe be shot off before injection

First: shoot off the liquid medicine in the syringe to ensure the safety of treatment. Because when drawing the liquid medicine, the needle will inevitably come out of the water. At this time, when drawing the medicine, it will inevitably bring some air into the syringe. In order to avoid this situation, the liquid medicine in the syringe should be shot off a little before injection.

Second: if you don't take out a little of the liquid medicine in the syringe, the air will enter at this time, which will cause serious consequences. If the air into the subcutaneous or intradermal, you may feel more pain than usual. But if the air into the blood vessels by mistake, it will hinder the smooth flow of blood, resulting in hypoxia and malnutrition.

Third: if the air is injected into the body, less is OK. If the air is injected more, the greater the impact will be. Therefore, the liquid medicine in the syringe must be shot off before injection.

matters needing attention

Although injection seems to be a very common thing, if it is not handled properly, it will bring unnecessary trouble to people.