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. Muscle rigidity of the extremities: This finding is more indicative of hyperkalemia or severe electrolyte imbalances but is not a common symptom of hypokalemia.
B. Bounding radial pulses: This finding is more associated with hypervolemia or hyperkalemia, not with hypokalemia caused by furosemide.
C. Depressed deep tendon reflexes: This is the correct response, as low potassium levels (hypokalemia) can lead to diminished reflexes due to its role in neuromuscular function.
D. Increased bowel motility: This is incorrect, as hypokalemia typically results in decreased bowel motility and may cause constipation rather than increased motility.
Correct Answer is A
Explanation
Rationale:
A. Albuterol: This is a bronchodilator that can cause side effects such as increased heart rate and chest pain due to its stimulant effect on the cardiovascular system.
B. Furosemide: This diuretic is unlikely to cause chest pain directly; however, it may lead to electrolyte imbalances that can indirectly affect cardiac function.
C. Digoxin: While digoxin has several potential side effects, chest pain is not commonly recognized as a direct adverse effect of this medication.
D. Atenolol: This medication is a beta-blocker used to manage hypertension and is unlikely to cause chest pain; rather, it may help alleviate angina symptoms.