A nurse in the PACU is caring for a client who has received general anesthesia and has manifestations of malignant hyperthermia. Which of the following medications should the nurse expect to administer?
Diazepam
Dantrolene
Cyclobenzaprine
Metaxalone
The Correct Answer is B
Rationale:
A. Diazepam is a benzodiazepine used for anxiety and sedation but is not effective for treating malignant hyperthermia.
B. Dantrolene is the specific antidote for malignant hyperthermia, and the nurse should expect to administer it to help reduce the severe muscle contractions and hypermetabolism associated with this condition.
C. Cyclobenzaprine is a muscle relaxant used for muscle spasms but is not indicated for malignant hyperthermia.
D. Metaxalone is also a muscle relaxant, but like cyclobenzaprine, it is not effective for managing malignant hyperthermia and would not be used in this situation.
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Correct Answer is B
Explanation
Rationale:
A. "I will stop taking this medication when I feel better.": The full course of antibiotics should be completed to ensure the infection is fully treated and to prevent antibiotic resistance. This statement shows a misunderstanding.
B. "This medication can increase my risk of sunburn.": Ciprofloxacin can increase sensitivity to sunlight, making the skin more prone to sunburn. Clients are advised to avoid excessive sun exposure and use sunscreen.
C. "I should take my medication daily in the morning with milk.": Ciprofloxacin should not be taken with dairy products as calcium can interfere with the absorption of the medication, reducing its effectiveness.
D. "I should stop taking my birth control pills while I'm taking this medication.": Ciprofloxacin does not require discontinuation of birth control pills, though clients should be aware of the potential for antibiotic interactions to reduce contraceptive effectiveness.
Correct Answer is B
Explanation
Rationale:
A. Hydrochlorothiazide does not prevent angiotensin II from binding with receptor sites; this action is typically associated with ACE inhibitors or angiotensin receptor blockers.
B. Hydrochlorothiazide decreases the reabsorption of sodium and water in the distal renal tubule, which leads to increased urine output and decreased blood volume, effectively lowering blood pressure.
C. Hydrochlorothiazide does not block beta receptors; this is the mechanism of action for beta-blockers.
D. Hydrochlorothiazide does not promote the movement of extravascular fluids into the vascular compartment; instead, it reduces blood volume by promoting diuresis.