How can an injection be successful?

Injection means injection, including intradermal injection, subcutaneous injection, intramuscular injection, intravenous injection, intravenous infusion and intraosseous infusion.

It is a method of using syringes and needles to penetrate the skin and send liquid into the body. It is a route of administration, and the expected injection location is not necessarily the injection location.

injection process

intramuscular injection

When hitting a ball in muscle tissue, the commonly used muscle injection sites are deltoid, gluteus maximus, gluteus medius, gluteus minimus, lateral thigh muscle and so on. After routine disinfection, the injection method is to inject the needle at 90 degrees with the skin of the injection site quickly, and bury the needle for about one-third to two-thirds No blood returned. Push the potion back slowly. The curative effect of intramuscular injection is longer than that of intravenous injection, and it is the fastest way of all injection methods except intravenous injection.

mainline

If placed in a vein, any vein that is easy to puncture, rich in blood flow and far from the venous valve can be used for intravenous injection. After routine disinfection, the injection method is to enter at an angle of 15-20 degrees with the found blood vessel, reduce the puncture angle after seeing the blood returning, and slowly inject the liquid medicine. Intravenous injection is the fastest way for drugs to take effect among all injection methods.

IC (intradermal injection? )

Hit between epidermis and dermis, often used in the middle of forearm palm, usually used in skin test (drug allergy test), and also the precursor step of local anesthesia. Injection method: after ethanol disinfection, puncture the skin at an angle of 5 degrees or parallel to the skin, and inject 0 1ml liquid medicine. After a bulge is formed on the skin at the injection site, the needle is pulled out. After pulling out the needle, do not rub the local skin or press the local area.

Drug allergy test, observe the results after 15-20 minutes, prepare 2ml syringe and 1 branch of epinephrine hydrochloride. Intradermal injection cannot be disinfected with tincture of iodine. If the patient is allergic to ethanol, normal saline can be used instead of disinfection.

IH (subcutaneous injection)

The common parts of subcutaneous tissue are the lower edge of deltoid muscle of upper arm, abdomen, inner thigh and so on. Often used for vaccination. Injection method (taking the injection of the lower edge of the deltoid muscle of the upper arm as an example, the skin is disinfected routinely first, and then the syringe that has pumped out the liquid medicine is quickly punctured at an angle of 30-40 degrees with the skin, and goes deep into one-third to two-thirds of the needle bar, and the liquid medicine is slowly injected when there is no blood return.

Pull out the needle, press the eye of the needle with a cotton ball and pull out the needle quickly.

Extended data

Safety medication warning

Intramuscular injection has become increasingly deserted, and the prevalence of intravenous injection has also brought new problems of safe medication. "Intravenous injection also has disadvantages, and adverse reactions are usually more serious and occur more frequently." Although the purity of "hanging needle" is very high, it is still impossible to avoid the existence of insoluble particles. These insoluble particles enter the human body through the terminal filtering device of "hanging needle", which may cause local circulation disorder of blood vessels and cause vascular embolism.

In severe cases, it can cause local blood vessel blockage and insufficient blood supply, and lead to tissue hypoxia, resulting in edema and phlebitis. More seriously, foreign bodies can also invade tissues from blood vessels.

The four principles of safe drug use are safety, effectiveness, economy and applicability. Therefore, if you can take the medicine orally, it is best not to inject it. If you can inject it intramuscularly, it is best not to inject it intravenously. Even if injections are necessary, the number of injections should be minimized and the types of injections used together should be reduced. "Doctors should not abuse intravenous injection, patients have an objective treatment attitude, and don't just seek quick."

Baidu encyclopedia-injection

Baidu encyclopedia-ass needle