During the immediate postoperative period, the Post Anesthesia Care Unit nurse is assessing a patient who had hip surgery. The patient is experiencing tachycardia, tachypnea, and muscle rigidity, and his temperature is 103°F (39.4°C). The nurse will prepare for what immediate treatment?
Dantrolene injection, a skeletal muscle relaxant
Cardiopulmonary resuscitation (CPR) and intubation
An anticholinesterase drug, such as neostigmine
Naltrexone hydrochloride injection, an opioid reversal drug
The Correct Answer is A
A. Dantrolene injection, a skeletal muscle relaxant: The patient is exhibiting signs of malignant hyperthermia, a potentially life-threatening complication of anesthesia. Dantrolene is the primary treatment for malignant hyperthermia as it acts as a skeletal muscle relaxant, reducing muscle rigidity and hypermetabolism associated with the condition.
B. Cardiopulmonary resuscitation (CPR) and intubation: While the patient is experiencing significant physiological distress, initiating CPR and intubation would be premature without first addressing the underlying cause, which appears to be malignant hyperthermia.
C. An anticholinesterase drug, such as neostigmine: Anticholinesterase drugs like neostigmine are not indicated for the treatment of malignant hyperthermia.
D. Naltrexone hydrochloride injection, an opioid reversal drug: Naltrexone is used for opioid overdose reversal and is not appropriate for the treatment of malignant hyperthermia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Constricted pupils: Adrenergic agonist drugs typically cause pupil dilation (mydriasis), not constriction.
B. Increased heart rate: Adrenergic agonists stimulate the sympathetic nervous system, leading to increased heart rate (positive chronotropic effect) and increased cardiac contractility (positive
inotropic effect).
C. Bronchial constriction: Adrenergic agonists typically cause bronchodilation, not constriction.
D. Increased GI peristalsis: Adrenergic agonists usually inhibit GI motility, leading to decreased GI peristalsis and potentially constipation
Correct Answer is ["A","C","E"]
Explanation
A. Attention deficit hyperactivity disorder (ADHD) - Correct. CNS stimulants like
methylphenidate and amphetamine derivatives are commonly used to treat ADHD by improving attention, focus, and impulse control.
B. Panic attacks - Incorrect. CNS stimulants are not typically used to treat panic attacks.
Medications such as benzodiazepines or selective serotonin reuptake inhibitors (SSRIs) are more commonly used for panic disorder.
C. Narcolepsy - Correct. CNS stimulants are used to treat narcolepsy, a sleep disorder characterized by excessive daytime sleepiness and sudden attacks of sleep.
D. Neonatal apnea - Incorrect. CNS stimulants are not indicated for neonatal apnea.
Management of neonatal apnea usually involves supportive measures, respiratory support, and caffeine citrate as a respiratory stimulant.
E. Obesity - Correct. CNS stimulants like phentermine are sometimes used as adjuncts to diet and exercise for short-term management of obesity
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