. A patient with central diabetes insipidus is being treated with desmopressin (DDAVP) and fluid replacement. Which of the following lab values should the nurse monitor closely?
Serum sodium levels
Serum magnesium levels
Serum potassium levels
Serum calcium levels
The Correct Answer is A
A. Serum sodium levels: Desmopressin can lead to water retention and potentially hyponatremia. Monitoring serum sodium is crucial to prevent electrolyte imbalance.
B. Serum magnesium levels: Magnesium is not typically impacted by desmopressin treatment in central diabetes insipidus.
C. Serum potassium levels: Desmopressin does not generally affect potassium levels in patients with diabetes insipidus.
D. Serum calcium levels: Calcium levels are not directly influenced by desmopressin or diabetes insipidus.
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Correct Answer is B
Explanation
A. Ciprofloxacin, Metronidazole, and Ranitidine: Ciprofloxacin and ranitidine are not recommended for H. pylori treatment. Ciprofloxacin is not typically used, and ranitidine is an H2 blocker, not a proton pump inhibitor.
B. Amoxicillin, Clarithromycin, and Omeprazole: This combination is a standard triple therapy for H. pylori infection. Amoxicillin and clarithromycin are antibiotics, and omeprazole (a proton pump inhibitor) reduces stomach acid to help eradicate the bacteria.
C. Metronidazole, Tetracycline, and Bismuth subsalicylate: This combination is part of quadruple therapy rather than triple therapy. Quadruple therapy is usually reserved for cases resistant to initial treatment.
D. Erythromycin, Amoxicillin, and Famotidine: Erythromycin is not part of standard triple therapy, and famotidine is an H2 blocker, not a proton pump inhibitor.
Correct Answer is B
Explanation
A. Conjunctivitis. Conjunctivitis generally presents with redness and discharge but does not cause elevated intraocular pressure, severe pain, or visual disturbances like halos.
B. Acute angle-closure glaucoma. Acute angle-closure glaucoma is characterized by sudden severe eye pain, blurred vision, halos around lights, nausea, and vomiting, along with elevated intraocular pressure and a cloudy cornea.
C. Retinal detachment. Retinal detachment may cause sudden vision loss or flashing lights but typically lacks pain, nausea, or vomiting, and does not affect intraocular pressure.
D. Migraine with aura. A migraine with aura may cause visual disturbances but does not present with eye pain, red eye, or elevated intraocular pressure.