The healthcare provider orders Benadryl 40 mg IM now. The available concentration is 25 mg/mL. How many mL will the patient receive?
0.6 mL
1.6 mL
2 mL
1 mL
The Correct Answer is B
Choice A reason: For 40 mg at 25 mg/mL: 40 ÷ 25 = 1.6 mL. Choice A (0.6 mL) delivers 15 mg (0.6 × 25), underdosing Benadryl, which could fail to relieve allergic symptoms or sedation needs, making this choice incorrect for the prescribed dose.
Choice B reason: Calculating 40 mg ÷ 25 mg/mL = 1.6 mL accurately delivers the ordered 40 mg of Benadryl (diphenhydramine) for allergy or sedation. This ensures therapeutic efficacy without overdose, aligning with safe administration for intramuscular delivery, making this the correct choice.
Choice C reason: For 40 mg, the volume is 40 ÷ 25 = 1.6 mL. Choice C (2 mL) delivers 50 mg (2 × 25), overdosing Benadryl, risking excessive sedation or anticholinergic effects like dry mouth or confusion, making this choice incorrect and potentially unsafe.
Choice D reason: The correct volume is 1.6 mL (40 ÷ 25). Choice D (1 mL) delivers 25 mg (1 × 25), underdosing Benadryl, which may not achieve therapeutic effects for allergies or sedation, making this choice inadequate for the prescribed dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Insulin does not stimulate the liver to convert glycogen to glucose; instead, it promotes glycogenesis and inhibits glycogenolysis. By facilitating glucose uptake and storage, insulin lowers blood glucose levels, counteracting the process of glycogen breakdown into glucose, which is regulated by glucagon and other hormones, making this choice incorrect.
Choice B reason: Insulin does not promote amino acid synthesis into glucose (gluconeogenesis). It inhibits gluconeogenesis in the liver, reducing glucose production from amino acids and other substrates. By enhancing glucose uptake and storage, insulin maintains glucose homeostasis, making this option incorrect as it misrepresents insulin’s role in glucose metabolism.
Choice C reason: Insulin does not stimulate the pancreas to reabsorb glucose. The pancreas produces insulin, which acts on target tissues like muscle and fat to facilitate glucose uptake. Glucose reabsorption occurs in the kidneys, regulated by sodium-glucose cotransporters, not insulin, making this choice scientifically inaccurate for insulin’s function.
Choice D reason: Insulin promotes glucose uptake into cells by facilitating GLUT4 transporter translocation to cell membranes in muscle and adipose tissue. This allows glucose to enter cells for energy production via glycolysis and the Krebs cycle. This is insulin’s primary role in maintaining blood glucose homeostasis, making it the correct choice for its action.
Correct Answer is B
Explanation
Choice A reason: Glucuronidation does not primarily involve fecal excretion; it conjugates drugs for urinary excretion. Hydrolysis is unrelated, and fecal routes are secondary, so this is incorrect for glucuronidation’s role.
Choice B reason: Glucuronidation conjugates drugs, making them water-soluble for transport across renal tubules and excretion in urine. This is the primary mechanism, making it the correct choice for drug elimination.
Choice C reason: Enterohepatic recirculation involves some drugs, but glucuronidation aims for excretion, not recycling. Prolonging drug presence is not the goal, so this is incorrect for the process.
Choice D reason: Glucuronidation facilitates excretion, not reabsorption. Reabsorbing drugs would counteract its purpose of eliminating metabolites, making this incorrect compared to urinary excretion.
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