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
Explanation
Choice A rationale
Monitoring the patient’s cardiac activity via telemetry is the most important intervention for a patient with acute renal failure (ARF), uncontrolled type 1 diabetes mellitus, and hyperkalemia who is receiving an IV dose of regular insulin. Hyperkalemia can cause cardiac arrhythmias and other cardiac complications. Therefore, continuous cardiac monitoring is crucial to detect any changes in heart rhythm or rate that could indicate worsening hyperkalemia.
Choice B rationale
While assessing glucose via fingerstick every 4 to 6 hours is important for a patient with uncontrolled type 1 diabetes mellitus, it is not the most important intervention in this scenario. The patient’s hyperkalemia and ARF pose more immediate risks.
Choice C rationale
Evaluating hourly urine output for return of normal renal function is an important part of monitoring a patient with ARF34. However, in the context of hyperkalemia and the administration of insulin, cardiac monitoring is more critical.
Choice D rationale
Maintaining venous access with an infusion of normal saline is a standard nursing intervention for most hospitalized patients, but it is not the most important intervention in this scenario.
Correct Answer is ["A","B","C","D"]
Explanation
Choice A rationale
Administering IV fluids is a potential nursing intervention for several body systems. For example, the circulatory system may require IV fluids to maintain blood volume and pressure. The renal system may need IV fluids to ensure adequate urine output. The digestive system might need IV fluids to compensate for losses from vomiting or diarrhea.
Choice B rationale
Assessing a rash is a potential nursing intervention for the integumentary system. Rashes can be a sign of many different conditions, including allergic reactions, infections, autoimmune diseases, and more. By assessing the rash, the nurse can gather information to help determine its cause and appropriate treatment.
Choice C rationale
Administering an antihistamine is a potential nursing intervention for the immune system. Antihistamines are often used to treat allergic reactions, which involve the immune system.
They can also be used to treat symptoms of the common cold, which is caused by a viral infection.
Choice D rationale
Administering a steroid is a potential nursing intervention for several body systems. Steroids can be used to reduce inflammation, which can benefit the musculoskeletal, integumentary, respiratory, and other systems. They can also be used to treat certain endocrine disorders.
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