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,D,B,C
Explanation
- Complete a focused assessment: The first step in managing a patient with abdominal pain and other symptoms is to perform a comprehensive assessment. This will help identify the cause of the symptoms and guide subsequent interventions.
- Offer PRN pain medication: Once the immediate risks have been addressed, managing the patient’s pain is a priority. However, the choice of pain medication will depend on the results of the assessment.
- Send the emesis sample to the lab: Sending the emesis sample to the lab can provide valuable information about the cause of the patient’s symptoms. However, this is not as urgent as the other interventions.
- Elevate the head of the bed: Elevating the head of the bed can help reduce the risk of aspiration, especially in a patient who has vomited. This should be done as soon as possible.
Correct Answer is B
Explanation
Choice A rationale
While obtaining an analgesic prescription might help to alleviate the client’s joint pain, it is not the first intervention that should be implemented. The client’s vital signs indicate that they are in a state of shock, which is a medical emergency.
Choice B rationale
Infusing an intravenous fluid bolus is often the first step in treating shock. The client’s low blood pressure and high heart rate suggest that they may be experiencing hypovolemic shock, which can be caused by a severe fluid loss. Administering fluids can help to increase blood volume and improve blood pressure.
Choice C rationale
Administering a PRN oral antipyretic would not address the client’s immediate need. The client’s high temperature is a concern, but the low blood pressure and high heart rate are more immediate concerns.
Choice D rationale
Covering the client with a cooling blanket would address the client’s high temperature, but it would not address the more immediate concerns of low blood pressure and high heart rate.
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