The nurse is preparing to administer a histamine 2-receptor antagonist to a client with peptic ulcer disease. What is the primary purpose of this drug classification?
Neutralizes hydrochloric acid (HCI) in the stomach.
Inhibits action of acetylcholine by blocking parasympathetic nerve endings.
Destroys microorganisms causing stomach inflammation.
Decreases the amount of HCI secretion by the parietal cells in the stomach.
The Correct Answer is D
A. Histamine 2-receptor antagonists do not directly neutralize hydrochloric acid (HCl) in the stomach. Instead, they reduce acid secretion by blocking the histamine 2 receptors on parietal cells, thereby decreasing the production of gastric acid.
B. This describes the mechanism of action of anticholinergic medications, not histamine 2- receptor antagonists.
C. Histamine 2-receptor antagonists do not have antimicrobial properties and are not used to destroy microorganisms causing stomach inflammation. They primarily target acid secretion.
D. This is the correct purpose of histamine 2-receptor antagonists. They work by blocking the action of histamine on parietal cells in the stomach, leading to a reduction in the secretion of hydrochloric acid. This helps in the management of peptic ulcer disease and other conditions related to excessive gastric acid secretion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. This instruction is incorrect because it suggests collecting catheterized specimens, which is not necessary for a creatinine clearance test. Catheterization may increase the risk of contamination and is not typically performed for this test.
B. This instruction is incorrect because it does not involve the collection of a complete 24-hour urine specimen. Collecting specimens every 6 hours would not provide an accurate measurement of creatinine clearance over a 24-hour period.
C. This instruction is correct. For a 24-hour urine collection, the client should urinate at a specified time to start the collection period, discard this urine, and then collect all subsequent urine produced over the next 24 hours. This ensures that the entire 24-hour period is captured for analysis.
D. This instruction is incorrect because it does not involve the collection of all urine produced over a 24-hour period. Additionally, discarding the first portion of voiding is not necessary for a creatinine clearance test and may lead to inaccurate results.
Correct Answer is ["0.2"]
Explanation
Step-by-step Calculation:
- We need to find the volume (in mL) of teriparatide that contains the desired dose of 60 mcg.
- Set up the proportion:
dose (mcg) / concentration (mcg/mL) = volume (mL)
- Fill in the known values:
- Dose (mcg): 60 mcg (as given in the problem)
- Concentration (mcg/mL): 750 mcg/2.4 mL (from the medication label)
- Solve for the volume:
- Multiply both sides of the proportion by the concentration to isolate the volume on the left:
- dose (mcg) = volume (mL) concentration (mcg/mL)
- Substitute the known values:
- 60 mcg = volume (mL) (750 mcg / 2.4 mL)
- Calculate the volume:
- Divide both sides by the concentration to solve for the volume:
- volume (mL) = 60 mcg / (750 mcg / 2.4 mL)
- Simplify:
- volume (mL) = (60 mcg 2.4 mL) / 750 mcg
- volume (mL) = 0.192 mL (approximately)
- Rounding (optional): The problem specifies rounding to the nearest tenth. Since 0.192 is closer to 0.2 than 0.1, the rounded volume is:
- volume (mL) = 0.2 mL (rounded to one decimal place)
Therefore, the nurse should administer 0.2 mL of teriparatide.
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