What is the angle for intramuscular injection?

Many people don’t know what intramuscular injection means. In fact, it is a method of drug injection, and it is currently a very popular method. Specifically, the drug liquid is injected into the human body through a syringe to treat the disease. When people go to the hospital for injections or infusions, they often take this method. The following introduces the correct angle of intramuscular injection.

Intramuscular injection angle:

When injecting subcutaneously, the needle tip should be at an angle of 30-40 degrees to the skin. When injecting into the superficial veins of the limbs, the needle tip should be at an angle of 15-30 degrees to the skin. When injecting into the muscles, the needle tip should be at an angle of 90 degrees to the skin, that is, vertical insertion.

Guidance:

There is not only one aspect that needs attention for various injections. Other aspects such as nurse preparation, patient preparation, supplies preparation, and environmental preparation must also be familiar and mastered.

1. Subcutaneous injection is a method of injecting a small amount of liquid medicine into the subcutaneous tissue. Angle: The bevel of the needle is pointed upward at a 30-40 degree angle to the skin. 2. Intramuscular injection is a method of injecting liquid medicine into muscle tissue. Angle: The needle should be at 90 degrees to the injection site. 3. Intravenous injection is the method of injecting liquid medicine into the vein. Angle: The needle bevel is facing upwards, and the needle and skin are at a 20-degree angle.

The needle insertion angle for intramuscular injection is 90°, perpendicular to the skin; the needle insertion angle for intravenous injection is generally 15-30° to the skin, piercing the subcutaneous tissue from above or from the side of the vein, and then piercing the vein along the direction of the vein; the needle insertion angle for subcutaneous injection is generally 30-40° to the skin.

Needle angle requirements for various injection methods:

Intradermal (ID)

The needle is inserted into the skin at a 5° angle with the bevel facing upward.

Subcutaneous injection (H)

The needle tip should be pointed upwards and at an angle of 30° to 40° to the skin, and should be inserted quickly into the skin 1/2 to 2/3 of the way through the needle shaft.

Intramuscular injection (IM/im)

The needle is placed at a 90° angle to the injection site and quickly inserted into the muscle to a depth of about 2/3 of the needle stem.

Intravenous (IV/IV)

The needle is beveled upward and at an angle of 15° to 30° to the skin. It is inserted into the subcutaneous tissue from above or from the side of the vein, and then sneaks into the vein along the direction of the vein.

Femoral vein injection

The needle is inserted at an angle of 90° or 45° to the skin 0.5 cm inside the femoral artery; when the piston is pulled, dark red blood is seen, indicating that the needle has reached the femoral vein.