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 C
Explanation
Rationale:
A. Applying a warming blanket is not appropriate, as it may exacerbate the client's reaction to the infusion and is not a standard pre-medication strategy.
B. Infusing amphotericin B deoxycholate over 1 hour is too rapid; it is typically infused over 2-6 hours to minimize adverse effects.
C. Administering diphenhydramine prior to the administration of amphotericin B can help prevent or alleviate infusion-related reactions such as fever and chills, which the client experienced during previous infusions.
D. Monitoring vital signs once per hour following administration is insufficient; vital signs should be monitored more frequently during and immediately after the infusion to promptly detect and address any adverse reactions.
Correct Answer is D
Explanation
Rationale:
A. This statement is incorrect because the client should remove contact lenses before administering brimonidine and wait at least 15 minutes before reinserting them to ensure proper absorption and avoid irritation.
B. While some mild irritation can occur, it is not a desired effect and should not be expected; the nurse should clarify what level of irritation is considered normal.
C. This statement is incorrect as brimonidine is typically a long-term treatment for glaucoma, and clients should not stop using it without consulting their provider.
D. This statement is correct; brimonidine can cause changes in eye color, particularly in individuals with lighter colored eyes, and the client should be informed about this possibility.