The nurse is aware that intramuscular injections should be given at what angle?
10-15 degrees.
90 degrees.
45 degrees.
60 degrees.
The Correct Answer is B
Choice A rationale
A 10-15 degree angle is used for intradermal injections, where the medication is deposited just beneath the epidermis, creating a bleb or wheal. This shallow angle ensures the medication remains within the superficial layers of the skin for diagnostic purposes like allergy testing.
Choice B rationale
Intramuscular injections are administered at a 90-degree angle to ensure the needle penetrates deeply into the muscle tissue, bypassing the subcutaneous layer. This angle facilitates rapid absorption into the well-vascularized muscle and minimizes the risk of medication leakage into the subcutaneous tissue or irritation.
Choice C rationale
A 45-degree angle is typically used for subcutaneous injections, where the medication is deposited into the adipose tissue beneath the dermis. This angle is chosen to avoid injecting into muscle while still reaching the subcutaneous layer for systemic absorption.
Choice D rationale
A 60-degree angle is not a standard injection angle for common parenteral routes. The primary angles used for injections are 10-15 degrees (intradermal), 45 degrees (subcutaneous), and 90 degrees (intramuscular). Deviating from standard angles can compromise medication delivery and patient safety.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
Ankylosis refers to the stiffening and immobility of a joint due to fusion of the bones. This condition is typically caused by chronic inflammation or injury, leading to bone remodeling and eventual bridging of the joint space. It is a pathological process that restricts movement and is not a normal physiological adaptation during pregnancy.
Choice B rationale
Scoliosis is an abnormal lateral curvature of the spine, often accompanied by rotation of the vertebrae. It can be congenital, neuromuscular, or idiopathic. This spinal deformity deviates from the normal sagittal plane alignment and is not a typical physiological compensatory mechanism for the gravid uterus.
Choice C rationale
Kyphosis is an excessive outward curvature of the thoracic spine, resulting in a hunched back appearance. While some degree of thoracic kyphosis is normal, an exaggerated curve can be pathological. It does not represent the compensatory postural change seen in pregnant women, which primarily involves the lumbar region.
Choice D rationale
Lordosis is an increased inward curvature of the lumbar spine. During pregnancy, as the uterus enlarges anteriorly, the woman's center of gravity shifts forward. To maintain balance and prevent falling, the abdominal muscles stretch and the lumbar spine accentuates its inward curve, which is known as lordosis, a physiological adaptation.
Correct Answer is ["0.004"]
Explanation
Step 1 is: Convert mcg to mg. There are 1000 mcg in 1 mg.
Step 2 is: 4 mcg ÷ (1000 mcg/1 mg) = 0.004 mg. Answer: 0.004 mg.
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