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 ["A","B","D"]
Explanation
Choice A rationale
Weighing the client daily, in the morning, is an important intervention for a client with heart failure (HF) being treated with diuretics for fluid volume excess. Daily weights can help monitor the client’s fluid status and the effectiveness of the diuretic therapy.
Choice B rationale
Teaching the client how to restrict dietary sodium is an important intervention for a client with HF being treated with diuretics for fluid volume excess. A low-sodium diet can help prevent fluid retention and exacerbation of HF3.
Choice C rationale
Monitoring coagulation laboratory values is not typically necessary for a client with HF being treated with diuretics for fluid volume excess, unless the client is also receiving anticoagulant therapy.
Choice D rationale
Observing for evidence of hypokalemia is an important intervention for a client with HF being treated with diuretics for fluid volume excess. Diuretics can cause loss of potassium, which can lead to hypokalemia.
Choice E rationale
Encouraging an oral fluid intake of 3,000 mL/day is not typically recommended for a client with HF being treated with diuretics for fluid volume excess. Excessive fluid intake can exacerbate HF3.
Correct Answer is B
Explanation
Choice A rationale
While the patient’s currently prescribed medications are important information, they are not the most immediate concern in this situation. The healthcare provider will need this information, but it does not need to be the first piece of information provided.
Choice B rationale
The increasing confusion of the patient is the most immediate concern and should be communicated first. Confusion and disorientation can be signs of a serious condition such as a brain injury, especially following a fall. It is crucial to relay this information to the healthcare provider as soon as possible so that appropriate diagnostic tests can be ordered and treatment can be initiated.
Choice C rationale
The patient’s healthcare power of attorney is important information, especially if the patient’s condition worsens and they are unable to make decisions for themselves. However, this information does not need to be communicated first. The immediate concern is the patient’s medical condition.
Choice D rationale
The fall from a ladder is certainly important information as it provides context for the patient’s current condition. However, it does not need to be the first piece of information provided. The healthcare provider will likely infer that a fall has occurred based on the other information provided (e.g., confusion, potential loss of consciousness).
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