What is the difference between subcutaneous injection, intramuscular injection and intravenous injection?

1. Intramuscular injection procedure: sterilize the skin with 2% iodine and 70% ethanol or 3% complexed iodine alone, and leave to dry. Drain the air from the syringe. Separate the skin with the thumb and index finger of the left hand, hold the needle in the right hand as if holding a pen, and fix the pin with the middle finger. The needle and the injection site are MP, which is quickly inserted into the muscle, generally about 2.5-3cm (2/3 of the needle, reduced for emaciated patients and sick children). Release the left hand, twitch the piston, if no blood return, fix the needle, inject the drug. After injection, press the dry cotton swab into the needle and pull out the needle quickly.

2. Operation method of subcutaneous injection: select the injection site, disinfect the skin with 2% iodine tincture and 70% alcohol, and leave to dry. Draw the liquid medicine into the syringe and exhaust the air, tighten the skin in your left hand, hold the syringe in your right hand, and fix the needle bolt with your index finger. The needle incline upward is at a 30-40 degree Angle to the skin. For those who are too thin, pinch the injection site and quickly Pierce two-thirds of the needle into the needle. After injection, gently press the needle with a sterilized cotton swab, quickly pull out the needle, and clean up the object.

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