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. Aching leg. Aching leg is not a commonly occurring problem after gastric endoscopy. It may be related to positioning during the procedure or another unrelated issue.
B. Nausea. Nausea is a potential side effect of the anesthesia or sedation used during the procedure. However, it is not as commonly occurring as a sore throat after gastric endoscopy.
C. Sore throat. Sore throat is a commonly occurring problem after gastric endoscopy due to
irritation of the throat by the endoscope. It is often caused by the insertion and manipulation of the scope during the procedure.
D. Headache. While headache can occur as a side effect of anesthesia or sedation, it is not as commonly associated with gastric endoscopy as a sore throat.
Correct Answer is ["100"]
Explanation
- Total volume of the infusion: 50 mL (saline bag)
- Infusion time: 30 minutes = 0.5 hours (convert minutes to hours)
- We don't need the concentration of gentamicin for this calculation because we're only interested in the total volume delivered per hour.
- Flow rate: Since all the medication is delivered within the infusion time, the flow rate is equal to the total volume divided by the infusion time.
Flow rate (mL/hour) = Total volume (mL) / Infusion time (hours)
Flow rate = 50 mL / 0.5 hours Flow rate = 100.0 mL/hour
Therefore, the nurse should set the pump to deliver 100.0 mL/hour to infuse the 60 mg of gentamicin over 30 minutes.
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