A nurse in the PACU is caring for a client who has a temperature of 40° C (104° F) and received succinylcholine during surgery. Which of the following medications should the nurse plan to administer to decrease body temperature?
Rocuronium
Epinephrine
Dantrolene
Flumazenil
The Correct Answer is C
Choice A reason: Rocuronium is a non-depolarizing neuromuscular blocker used for muscle relaxation during intubation or surgery. It does not treat malignant hyperthermia, which is the likely cause of the elevated temperature after succinylcholine administration.
Choice B reason: Epinephrine is used for anaphylaxis, cardiac arrest, and severe asthma exacerbations. It does not address the underlying pathophysiology of malignant hyperthermia, which involves uncontrolled calcium release in skeletal muscle.
Choice C reason: Dantrolene is the correct medication. It directly reduces muscle contraction by inhibiting calcium release from the sarcoplasmic reticulum. This action reverses the hypermetabolic state of malignant hyperthermia, lowering body temperature and preventing further complications such as rhabdomyolysis and organ failure.
Choice D reason: Flumazenil is a benzodiazepine antagonist used to reverse sedation. It has no role in treating malignant hyperthermia or hyperthermia caused by succinylcholine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Ambulation promotes peristalsis and reduces postoperative complications, but it should not be encouraged before assessing the underlying cause of nausea and pain. Without assessment, ambulation could worsen discomfort or mask complications.
Choice B reason: Inserting an NG tube is an invasive intervention reserved for confirmed cases of bowel obstruction or severe ileus. Performing this without assessment risks unnecessary trauma and patient distress.
Choice C reason: Auscultating for bowel sounds is the priority because it provides critical information about gastrointestinal motility and potential complications such as ileus or obstruction. Assessment must precede interventions to ensure safety and appropriateness of care.
Choice D reason: Administering an antiemetic addresses symptoms but not the underlying cause. Symptom relief without assessment could delay recognition of serious complications.
Correct Answer is C
Explanation
Choice A reason: Magnesium is a naturally occurring mineral in water and is not typically associated with toxicity in household water supplies. While excessive magnesium can cause gastrointestinal upset, it is not considered a primary hazard in older homes. Testing for magnesium is not a standard safety recommendation.
Choice B reason: Potassium is also a naturally occurring mineral and is not a common contaminant of concern in household water. Potassium levels in water are generally safe and do not pose a significant health risk. Therefore, routine testing for potassium is unnecessary in the context of home hazard assessments.
Choice C reason: Lead is the correct answer because older homes often have plumbing systems that contain lead pipes, solder, or fixtures. Lead can leach into drinking water, especially if the water is acidic or has low mineral content. Chronic exposure to lead causes neurotoxicity, developmental delays in children, hypertension, and kidney damage. Testing for lead is a critical safety measure in older homes to prevent long-term health complications.
Choice D reason: Copper can leach into water from plumbing, but copper toxicity is rare and usually requires very high levels. While copper can cause gastrointestinal upset and liver damage in extreme cases, it is not the primary hazard associated with older homes. Lead remains the most significant concern.
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