What technique is used for intradermal injections?

The technique used for intradermal injections involves administering the medication just below the epidermis at a 10-15 degree angle. This method is specifically designed to introduce a small volume of medication into the dermal layer of the skin, which is located just beneath the outer layer (epidermis).

Intradermal injections are typically used for purposes such as allergy testing and tuberculosis screening (Mantoux test), where a localized immune response is desired. The shallow angle of insertion minimizes the risk of injecting the substance too deep into the subcutaneous tissue or muscle. The small volume injected also ensures that the medication can be absorbed at a controlled rate and allows for visibility of the injection site effects.

The other techniques mentioned involve different injection sites and angles that are not suitable for intradermal procedures. For instance, injecting into the muscle at a 90-degree angle is appropriate for intramuscular injections, while injecting into fatty tissue at a 45-degree angle applies to subcutaneous injections. Injecting directly into the bloodstream is relevant for intravenous procedures, which bypasses the skin layers entirely. Understanding the specifics of each injection technique is crucial for safe and effective administration of medications.