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 ["A","B","D","E"]
Explanation
A. Dosage in safe range: Ensures that the dosage of vancomycin falls within the acceptable range, minimizing the risk of toxicity.
B. Blood urea nitrogen 17 mg/dl (6.07 mmol/L): Normal BUN levels indicate adequate renal function, which is important for the excretion of vancomycin.
C. Potassium 4.4 mEq/L (4.4 mmol/L): While potassium levels are important for overall health, they are not directly related to the administration of vancomycin.
D. No known allergies: Absence of allergies reduces the risk of adverse reactions to the medication.
E. Peripheral IV in large vein: A peripheral IV in a large vein allows for the administration of vancomycin without complications such as phlebitis or infiltration.
F. While vancomycin is being used for prophylaxis against endocarditis in this case, this alone does not indicate the safety of administering the antibiotic. Other factors such as renal function and absence of allergies are more directly related to the safety of vancomycin administration.
Correct Answer is A
Explanation
A. Begin parenteral antibiotic therapy.
This is the correct answer. Osteomyelitis is a serious bone infection that requires prompt and aggressive antibiotic therapy to prevent further complications and promote healing.
B. Administer antiemetic agents.
Antiemetic agents may be necessary if the client is experiencing nausea or vomiting, but this is not the priority action.
C. Provide a high-calorie, high-protein diet.
While nutritional support is important for healing, initiating antibiotic therapy to address the infection takes precedence.
D. Bivalve the cast for distal compromise.
Bivalving the cast might be necessary if there is evidence of compartment syndrome or impaired circulation, but there is no indication from the question that such a complication is present at this time.
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