Blood backflow during infusion

Because intravenous injections are much more effective than other injection methods, when the condition reaches a more serious level, intravenous treatment is needed. Infusion therapy mainly involves finding some veins for drug infusion. Therefore, the nurse's technique is very important during infusion therapy. Some nurses' inadequate techniques result in the infusion needle not being able to penetrate the patient's body for a while, and sometimes even blood backflow occurs during the infusion process. What's going on?

Normally, when giving an IV, as long as a blood transfusion device is not used, the general infusion device relies on pressure. After the medicine is finished dripping, the pressure is lower than the pressure in the blood vessels, and some blood will flow back, which will clog the needle for a long time. There will be no danger to life!

Failure to remove the needle in time may lead to "blood return"

What will be the consequences if the needle is not removed in time after the medicine is infused? Deng Minyi introduced that if the needle is not removed in time, when the pressure in the infusion tube is lower than the pressure in the blood vessels, blood will flow out of the infusion tube, which is what we often call "blood return". Over time, the blood will coagulate, leading to blockage of the needle.

In addition, if the medicine takes too long to drip out, especially when the liquid in the Moffitt tube (the hollow drip pot device at the upper part of the infusion tube) has been dripped out, if the nurse wants to infuse the next bag of medicine, she needs to expel the air in the infusion tube specifically to avoid infusing too much air.

Therefore, when you find that the fluid is almost finished during an infusion, it is best to notify the nurse in advance to allow the nurse enough time to remove the needle.

What are the consequences of blood transfusion?

Generally, when performing an infusion, blood will return from the syringe. This means that the needle has completely entered the blood vessel before the infusion can be performed. This is not harmful. If blood does not return, the needle may pierce the blood vessel wall, and forced infusion will cause local blistering, also known as needle misalignment. However, the blood return time should not be too long. If the blood return time is too long and the infusion has not started, the blood may become viscous and form a clot, which is harmful to the human body.

The hazards of infusion

The dangers of intravenous drip: 1. It causes adverse reactions. Compared with oral medication and intramuscular injection, during infusion, the drugs enter the blood vessels directly without passing through any barriers. Once an allergic reaction occurs, the patient may go into shock or even die within a few minutes. If the infusion rate is too fast, pulmonary edema may occur due to excessive circulatory load. Therefore, patients who are allergic to drugs must undergo a skin test before receiving an IV drip, as severe allergic reactions can be fatal.

The second harm of intravenous drip is that it is easy to get infected. If the syringe, needle and the skin at the injection site are not disinfected strictly during infusion, the needle hole may become red, swollen and festered, and in severe cases, it may cause systemic infection. If you go to a hospital or clinic for an IV drip, you must be careful to observe. If the doctors and nurses are not paying attention, we should pay attention.