Nokea
Medical treatment of myasthenia gravis includes:
- A. Thymectomy
- B. Physostigmine
- C. Edrophonium
- D. Anticholinergic agents
Correct Answer: C
Rationale: Edrophonium: Edrophonium is used in the diagnosis and short-term treatment of myasthenia gravis as it improves neuromuscular transmission by inhibiting acetylcholinesterase.
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Which is/are true?
- A. Babies are able to respond to sounds in utero
- B. Full term babies at birth are unable to follow a large object with their eyes
- C. A 6-week-old infant would be able to follow a large object through an arc of 135°
- D. Growth velocity of head decreases with age
Correct Answer: A
Rationale: Babies can respond to sounds in utero, and head growth velocity does decrease with age. Full-term babies can follow large objects, and a 6-week-old can follow objects through a smaller arc.
A healthcare worker with no known exposure to tuberculosis has received a Mantoux tuberculosis skin test. The nurse's assessment of the test after 62 hours indicates 5 mm of erythema without induration. What is the best initial nursing action?
- A. Document negative results in the client's medical record
- B. Repeat the test immediately on the opposite forearm
- C. Notify the healthcare provider for further evaluation
- D. Schedule the worker for a chest X-ray
Correct Answer: A
Rationale: Erythema without induration is not considered a positive result. Documentation of negative findings is appropriate.
In childhood asthma:
- A. Over 90% of patients show exercise-induced bronchoconstriction
- B. Hypercapnia is the first physiological disturbance in status asthmaticus
- C. Infants are unresponsive to bronchodilators
- D. Spontaneous cure occurs before adolescence
Correct Answer: D
Rationale: Spontaneous cure before adolescence is a recognized phenomenon in childhood asthma, though not all cases resolve. Other options are incorrect: exercise-induced bronchoconstriction is common but not universal, hypercapnia occurs late in status asthmaticus, and infants do respond to bronchodilators.
The nurse provides home care instructions to the parents of a child with heart failure regarding the procedure for administration of digoxin (Lanoxin). Which statement by the parent indicates a need for further instruction?
- A. “If my child vomits after the medication administration, I will repeat the dose.â€
- B. “I will not mix the medication with food.â€
- C. “I will take my child’s pulse before administering the medication.â€
- D. “If more than one dose is missed, I will call the provider.â€
Correct Answer: A
Rationale: Repeating the dose after vomiting can lead to digoxin toxicity, which is dangerous. The parent should be instructed to contact the healthcare provider if vomiting occurs after administration.
SVT in children differ from physiologic sinus tachycardia by all the following EXCEPT
- A. sudden onset and termination
- B. persistent ventricular rate of >180 bpm
- C. fixed RR interval on ECG
- D. evident change in heart rate with activity
Correct Answer: D
Rationale: Physiologic sinus tachycardia can show changes in heart rate with activity, unlike SVT which has a fixed rate.