The lower edge of the deltoid muscle of the upper arm of the hypodermic needle is the lower edge inside the deltoid muscle, or the lower edge outside the deltoid muscle?

The injection location of the deltoid muscle of the upper arm: the outer side of the upper arm, 2 to 3 transverse fingers below the acromion. The muscles here are thinner than those of the buttocks, and only small doses can be injected. The lower edge of the deltoid muscle of the upper arm is a fixed injection position, which is beneficial to the absorption of the drug. As for the injection on the left side, it is a habit to take preventive shots, such as the injection of BCG, 1 ml of air is injected into the subcutaneous injection. Air is drawn into the syringe after the withdrawal.

The correct way to inoculate hepatitis B vaccine: intramuscularly at the midpoint of the deltoid muscle of the upper arm, which is a common site for intramuscular injection of hepatitis B vaccine. Anti-anaphylactic shock pararenin and hydrogen test must be prepared before injection, and the ampoule must be shaken for 2 minutes before opening.

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