During the injections you can notice an interesting feature. Why are they doing this?
Who came up with the injection and injections?
In 1628, the scientist W. Harvey said that medicines can be injected into the body through the skin. He studied the circulatory system of people and suggested that through it it will be possible to quickly distribute the drug throughout the body.
In 1670, Dr. M. Purman first introduced the drug into a patient's vein. He made a device in which there was a steel needle connected to a glass ampoule. Inside was a movable leather piston. Purman called the device a syringe. The name comes from the German word "syringe", which means to inject.
Purman's first patient was a woman. After the injection, my health got better.
The second time the doctor injected himself when he contracted scabies. The injection was done by an assistant who introduced the drug too quickly. Because of this, Purman lost consciousness. Soon, he realized the mistake and even improved the syringe by making a thread in it on the rods along which the piston moved.
The benefits of injections:
- high effectiveness of the drug;
- quick action;
- a small number of side effects;
- a small number of contraindications.
In many diseases, injections are prescribed, not pills. Injections allow you to quickly cure pathologies and prevent complications such as gastritis, gastric ulcer and others.
Causes of spillage before injection
Doctors pour a little liquid before the injection for two reasons. When a medication is taken from an ampoule, oxygen penetrates into the syringe. It can be a small vial, which at first glance does not seem dangerous. In fact, it can lead to the appearance of a thrombus, life-threatening. The fact is that when it comes into contact with air, blood begins to coagulate. This can be prevented if you pour out a little fluid from the needle before the injection. Even a couple of drops indicates that there is no more air left in the syringe.
There is a second reason that explains the actions of doctors. The fact is that due to the presence of oxygen in the syringe, you cannot find out the exact dose of the medicine. When using potent drugs, even small deviations can become a real problem. Having let out air, it will be possible to understand how much medicine is inside the syringe. If necessary, excess fluid can be removed through a needle.
As you can understand, it is necessary to clean the air before injection. Otherwise, a blood clot may appear.
Is it possible to make several injections with one syringe?
Some people seek to save money or simplify their task using a single syringe several times. Doctors say that after each injection you need to change the needle. The syringe itself is also often to be replaced. Perhaps the drugs are incompatible, and after the injection, the previous medicine may remain on the walls. In this case, there is a risk of serious complications.
As for the needle, it becomes dull after the first injection. The second injection will be much more painful.Doctors even recommend changing the needle after piercing the rubber cap of the ampoule.
Two people should not use the same syringe, because there is a risk of transmission of various diseases. It is better to protect yourself, so that later you do not have to be treated.
Before injection, a little liquid is poured from the syringe in order to remove air. Oxygen in contact with blood leads to blood clots. Also, due to its presence in the syringe, you cannot find out the exact dosage of the medicine. Before injection, it is necessary to release a few drops from the needle, and then make an injection.
