The patient is to take 10 mEq of potassium gluconate PO daily. The medication bottle is labeled 20 mEq per 15 mL. The patient's wife asks the home health nurse how many teaspoons of potassium gluconate she should give her husband. The nurse sets up the following proportion:
20 mEq: 15 mL:: 10 mEq: x mL
The nurse solves for x mL, then converts the answer to tsp using a conversion chart. The nurse instructs the patient's wife to administer _______ to her husband daily.
7½ teaspoons
1½ teaspoons
3 teaspoons
1 teaspoon
The Correct Answer is B
Calculation:
- Calculate the volume in milliliters (mL) to administer.
Ordered Dose (D) = 10 mEq
Available Dose (H) = 20 mEq
Quantity (Q) = 15 mL
Volume (mL) = (Dose Ordered (D) / Dose Available (H)) x Quantity (Q)
= (10 mEq / 20 mEq) x 15 mL
= 0.5 x 15 mL
= 7.5 mL
- Convert the volume from milliliters (mL) to teaspoons (tsp).
Volume in mL = 7.5 mL
Conversion factor: 1 teaspoon (tsp) = 5 mL
Volume (tsp) = Volume in mL / Conversion factor
= 7.5 mL / 5 mL/tsp
= 1.5 teaspoons (or 1 1/2 teaspoons)
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. IV, SL: Intravenous (IV) and sublingual (SL) routes are not indicated on the label. Administering via these routes could result in improper absorption or adverse effects.
B. IM, SUBQ: The label clearly states “For IM or SUBQ Use Only,” indicating that intramuscular and subcutaneous administration are the safe and approved routes for cyanocobalamin. This ensures correct absorption and patient safety.
C. IV, IM: While intramuscular (IM) is correct, intravenous (IV) is not listed as an approved route. Using IV could cause complications or medication errors.
D. IM, PO: Oral (PO) administration is not appropriate for cyanocobalamin in this formulation. The medication is designed for injection, and taking it orally would prevent effective absorption.
Correct Answer is A
Explanation
A. Injected into the top layers of the skin: Intradermal injections are administered into the dermis, just below the epidermis. This route is commonly used for allergy tests and tuberculosis screening because it allows for slow absorption and visible wheal formation.
B. Inhaled through the mouth or nose: Inhalation delivers medication to the respiratory tract and is not related to intradermal administration. Using this route would not achieve the intended therapeutic or diagnostic effect.
C. Placed between the gum and lining of the cheek: This describes the sublingual or buccal route, which allows rapid absorption into the bloodstream. It does not correspond to intradermal injection and would not be appropriate for the ordered 0.1 mL dose.
D. Given into the muscle: Intramuscular injections deliver medication into muscle tissue, allowing faster absorption than intradermal injections. Administering the drug intramuscularly would be incorrect for a test or medication intended for intradermal delivery.
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