In addition to the forearm, which of these sites are commonly used for the administration of an intradermal injection?
Abdomen, 2-in. from umbilicus.
Anterior thigh.
Posterior upper arm.
Upper chest.
The Correct Answer is D
Choice A rationale
The abdomen, specifically 2 inches from the umbilicus, is a common site for subcutaneous injections due to the presence of ample adipose tissue, which allows for slower absorption of medications like insulin or heparin. Intradermal injections require a site with a thin epidermis and minimal subcutaneous tissue to ensure the medication remains within the dermal layer, making the abdomen unsuitable.
Choice B rationale
The anterior thigh is a common site for intramuscular injections, particularly in infants, due to the large muscle mass (vastus lateralis). While it can be used for subcutaneous injections, its muscularity and varying skin thickness make it less ideal for the precise shallow angle required for an intradermal injection, where the goal is to deposit the medication into the dermis.
Choice C rationale
The posterior upper arm, specifically the triceps area, is frequently utilized for subcutaneous injections, such as insulin or certain vaccines, because it offers sufficient subcutaneous tissue. However, similar to the anterior thigh, its anatomical characteristics with thicker skin and subcutaneous fat layers make it less optimal for the very superficial intradermal injection technique.
Choice D rationale
The upper chest, particularly below the clavicle and above the breasts, is an appropriate site for intradermal injections. This area, along with the inner forearm and upper back, has a thin epidermis and less subcutaneous tissue, which facilitates the proper placement of the medication within the dermis, allowing for the formation of a visible wheal, a key indicator of a successful intradermal injection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
While method of administration is crucial, controlled substance schedule and identification are not universally required on every prescription. The core components for safe and effective medication administration are paramount for all prescriptions.
Choice B rationale
This choice omits the method of administration, which is vital for safe and effective drug delivery. Without this information, there is a risk of administering the medication incorrectly, potentially leading to adverse effects or lack of therapeutic benefit.
Choice C rationale
A complete prescription scientifically requires the drug name for identification, the dose to ensure therapeutic effect and prevent toxicity, the method of administration for correct delivery route, and the prescriber's signature for legal authorization and accountability.
Choice D rationale
Controlled substance schedules are specific to certain medications and identification is not a standard universal requirement on all prescriptions. The core components for general medication administration are the drug name, dose, method, and prescriber signature.
Correct Answer is ["147.9"]
Explanation
Step 1: Convert fluid ounces to milliliters. 1 fl. oz = 29.5735 mL.
Step 2: Multiply the given fluid ounces by the conversion factor. 5 fl. oz × 29.5735 mL/fl. oz = 147.8675 mL.
Step 3: Round the answer to the nearest tenth. 147.9 mL.
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