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When giving an IM injection, what is the correct angle of needle insertion?

A.

90 degrees

B.

45 degrees

C.

60 degrees

D.

30 degrees

Answer and Explanation

The Correct Answer is A

A. 90 degrees: Intramuscular injections require the needle to be inserted at a 90-degree angle to the skin to ensure the medication reaches the muscle tissue. This angle maximizes absorption and minimizes the risk of subcutaneous deposition, which can reduce efficacy or cause irritation.

B. 45 degrees: A 45-degree angle is used for subcutaneous injections, not IM injections. Administering an IM medication at this angle could result in the drug being deposited into subcutaneous tissue, slowing absorption and potentially causing local tissue irritation.

C. 60 degrees: There is no standard IM injection technique that uses a 60-degree angle. Using this angle could result in improper drug delivery and inconsistent absorption, making it unsafe and ineffective.

D. 30 degrees: A 30-degree angle is typically used for intradermal injections, such as tuberculin testing. Using this angle for IM injections would fail to reach the muscle, compromising medication effectiveness.


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Related Questions

Correct Answer is D

Explanation

Calculation:

  • Identify the ordered dose and available concentration

Ordered Dose: 4 mg

Available Concentration: 10 mg/2 mL

  • Calculate the concentration per mL

Concentration = 10 ÷ 2 = 5 mg/mL

  • Calculate the volume to administer

Volume to administer = Ordered Dose ÷ Concentration

Volume to administer = 4 ÷ 5

= 0.8 mL

Correct Answer is C

Explanation

A. A 50-year-old with hearing impairment: Hearing impairment does not interfere with the coordination of inhaler use or the ability to generate an effective inhalation. This patient would not specifically benefit from a spacer for delivery efficiency.

B. A 25-year-old with multiple sclerosis: While MS can affect coordination, the degree and type of impairment would need to be evaluated. Not all patients with MS require a spacer, so this patient may or may not benefit depending on hand and respiratory control.

C. A 62-year-old with left-sided hemiparesis: Hemiparesis can limit hand strength and coordination, making it difficult to coordinate actuation and inhalation of a metered-dose inhaler. Using a spacer with a mouthpiece reduces the need for precise timing and ensures more medication reaches the lungs effectively, improving therapeutic outcomes.

D. A 2-year-old with a cleft palate: While young children typically require a spacer, a cleft palate may prevent effective mouthpiece use. Instead, a mask attachment on the spacer would be necessary. Therefore, this patient would not benefit from a standard mouthpiece spacer.

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