NHA Certified Clinical Medical Assistant (CCMA)Clinical Patient CareMedium
A medical assistant is preparing to administer a subcutaneous injection. Which of the following angles should the MA use to insert the needle?
- A15-degree angle
- B25-degree angle
- C90-degree angle
- D45-degree angle
Show answer & explanationAnswer & explanation
Correct answer: D. 45-degree angle
A 45-degree angle is the standard insertion angle for subcutaneous injections to ensure the medication is deposited into the subcutaneous tissue layer, avoiding muscle or intradermal layers.
Why the other options are wrong
- A. A 15-degree angle is typically used for intradermal injections, which target a different skin layer.
- B. A 25-degree angle is not a standard angle for common injection routes and would likely result in improper medication delivery.
- C. A 90-degree angle is used for intramuscular injections, which target deeper muscle tissue.
Subcutaneous Injection Angle
Subcutaneous injections are administered into the fatty tissue layer just below the dermis, typically using a 45-degree angle for needle insertion.
- Target: subcutaneous tissue.
- Common angle: 45 degrees.
- Pinch skin to lift subcutaneous layer.
- Avoids muscle and intradermal layers.
Memory trick: Sub-45, Intra-15, IM-90