https://doi.org/10.1351/goldbook.15201
Delivery of a generally sterile liquid medication into the body, or a vessel, tissue, or organ via syringe and needle.
Notes:
- Epidural injections are given into the epidural space of the spinal cord.
- Intra-articular injections are made into the synovial fluid, which lubricates the articulating ends of bones in a joint.
- Intrabursal injections are given into the bursae, which are small sacks of fluids between the tendons and bones.
- Intracardial injections are given directly into the heart in emergencies.
- Intracutaneous or intradermal injections are made into the skin between the inner layer (dermis) and the outer layer (epidermis).
- Intramuscular injections are made by inserting the needle across the skin, subcutaneous tissue, and membrane enclosing the muscle.
- Intraspinal injections are made into or around the spinal cord.
- Intravascular injections (intra-arterial and -venous) are made directly into the blood stream for rapid effect.
- Intrathecal injection is the introduction of material for diffusion throughout the subarachnoid space by means of lumbar puncture.
- Ophthalmic injections include a variety of sites within the eye.
- Subcutaneous or hypodermic injections are made under the skin into the subcutaneous tissue.
- The same formulation cannot be used for all routes.