Bismuth subsalicylate, clarithromycin, and metronidazole are prescribed for a child with a peptic ulcer to

Reduce gastric acid production.

Treat epigastric pain.

Coat gastric mucosa.

Eradicate Helicobacter pylori

Answer and Explanation

The Correct Answer is D

A. Reduce gastric acid production: That is the role of H2 blockers or PPIs, not the primary intent of this antibiotic combination.
B. Treat epigastric pain: Pain relief may follow eradication, but that is not the primary pharmacologic goal.
C. Coat gastric mucosa: Partially true for bismuth alone, but the combination goal is broader.
D. Eradicate Helicobacter pylori: The regimen (bismuth + clarithromycin + metronidazole) is used to eradicate H. pylori, a common cause of peptic ulcer disease.

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Correct Answer is D

Explanation

A. Lactated Ringers (LR): LR is an isotonic crystalloid (used for extracellular volume replacement), not hypotonic.
B. 0.9% sodium chloride (NS): 0.9% NS is isotonic, not hypotonic.
C. 29% NaCl: Concentrations like 3% NaCl are hypertonic and used cautiously for specific indications (e.g., severe hyponatremia or intracranial hypertension); anything much above 0.9% is hypertonic, not hypotonic.
D. 0.45% sodium chloride (1/2 NS): 0.45% NaCl (half-normal saline) is a hypotonic intravenous solution.

A. 4.9 mEq/L B. 6.2 mEq/L C. 5.5 mEq/L D. 5.8 meq/L

Correct Answer is A

Explanation

A. 4.9 mEq/L: Kayexalate (sodium polystyrene sulfonate) exchanges sodium for potassium in the gut to lower serum K⁺; a repeat K⁺ of 4.9 mEq/L is within the normal range (~3.5–5.0) and indicates effectiveness.
B. 6.2 mEq/L: 6.2 mEq/L remains dangerously high (severe hyperkalemia) and would indicate inadequate effect.
C. 5.5 mEq/L: 5.5 mEq/L is still elevated (mild–moderate hyperkalemia) and not a satisfactory treatment response.
D. 5.8 mEq/L:5.8 mEq/L is still high and indicates persistent hyperkalemia.

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Bismuth subsalicylate, clarithromycin, and metronidazole are prescribed for a child with a peptic ulcer to

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Naxlex Comprehensive Predictor Exams

The health care provider has ordered a hypotonic intravenous (IV) solution to be administered. Which IV bag will the nurse prepare?

Correct Answer is D

Explanation

The nurse is caring for a client with a critically high potassium level. The client has received sodium polystyrene sulfonate (Kayexalate). The nurse determines the medication's effectiveness if the client's repeat serum potassium level is:

Correct Answer is A

Explanation

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