The medicine liquid is pushed into the subcutaneous connective tissue and absorbed into the blood circulation process through capillaries and lymphatic vessels. Subcutaneous injection is often used for skin on the back or inner thigh. During operation, the skin at the injection site is routinely disinfected, and then the skin is lifted. The injection needle is inserted into the skin at an obtuse angle, and the needle is gently swung to the left and right. Easy to swing means that it has been penetrated under the skin and then gently sucked if there is no blood return , The drug can be injected slowly under the skin. When pulling the needle, the left thumb and index finger pinch the needle into the needle for a moment to prevent leakage of the drug. The injection volume is about 0.1 ~ 0.3ml / 10g body weight.
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