The nurse is about to administer a histamine 2-receptor antagonist to a patient with peptic ulcer disease. What is the primary purpose of this class of medication?
It reduces the amount of HCl secreted by the parietal cells in the stomach.
It destroys the microorganisms causing inflammation in the stomach.
It neutralizes hydrochloric acid (HCl) in the stomach.
It inhibits the action of acetylcholine by blocking parasympathetic nerve endings.
The Correct Answer is A
Choice A rationale
Histamine H2-receptor antagonists, also known as H2 blockers, are medications that help reduce the production of gastric acid. They achieve this by blocking H2 receptors in the parietal cells of the stomach, which are responsible for secreting hydrochloric acid (HCl)12. This reduction in acid secretion can help treat conditions such as peptic ulcers, gastroesophageal reflux disease (GERD), and Zollinger-Ellison syndrome, which are all conditions that can be exacerbated by excessive stomach acid.
Choice B rationale
While H2 blockers do help manage the symptoms of peptic ulcer disease, they do not directly destroy the microorganisms causing inflammation in the stomach. The primary cause of peptic ulcers is a bacterium called Helicobacter pylori, and the treatment for an H. pylori infection typically involves a combination of antibiotics and proton pump inhibitors, not H2 blockers.
Choice C rationale
H2 blockers do not neutralize hydrochloric acid (HCl) in the stomach. Instead, they work by reducing the amount of acid produced by the stomach. Antacids, not H2 blockers, are the class of drugs that work by neutralizing stomach acid.
Choice D rationale
H2 blockers do not inhibit the action of acetylcholine by blocking parasympathetic nerve endings. Anticholinergic medications are the ones that work by blocking the action of acetylcholine, a neurotransmitter that transmits signals in the nervous system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
While the color, clarity, and odor of urine can provide important information about a patient’s overall health and hydration status, it is not the most crucial information to obtain before inserting an indwelling urinary catheter.
Choice B rationale
The patient’s ability to increase fluid intake can be important in managing various health conditions, but it is not the most important information to obtain before this procedure.
Choice C rationale
Knowing if a patient has allergies to antiseptic solutions is crucial before inserting an indwelling urinary catheter. Using an antiseptic solution that a patient is allergic to can lead to serious complications.
Choice D rationale
While a previous history of urinary tract infections can inform the care and management of a patient with an indwelling urinary catheter, it is not the most important information to obtain before the procedure.
Correct Answer is ["A","D"]
Explanation
Choice A rationale
A chest x-ray is a critical diagnostic tool for a patient presenting with flu-like symptoms, fever, chest congestion, and increased breathing difficulties. It can help identify conditions such as pneumonia or other lung diseases, which could be causing the patient’s symptoms.
Choice B rationale
While hydration is important, running a 0.9% sodium chloride IV infusion at 150 mL/hour is not the most immediate need for this patient. The patient’s symptoms are primarily respiratory, and there is no indication of dehydration.
Choice C rationale
A sputum culture could be useful for diagnosing bacterial infections of the respiratory tract. However, it is not the most immediate need for this patient, as the results of a culture test can take time to come back.
Choice D rationale
This is the correct answer. Given the patient’s increased breathing difficulties, starting oxygen therapy can help improve the patient’s oxygen levels and ease their breathing.
Choice E rationale
Starting a peripheral IV might be necessary for administering medications or fluids, but it is not the most immediate need in this scenario.
Choice F rationale
While controlling the patient’s fever is important, it is not as immediate a need as performing a chest x-ray and starting oxygen therapy.
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