Nokea
Among the following Group A beta hemolytic streptococcus has the highest resistance to
- A. Cephalexin
- B. Clindamycin
- C. Erythromycin
- D. Doxycycline
Correct Answer: C
Rationale: Group A beta hemolytic streptococcus has shown the highest resistance to erythromycin.
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A nurse cares for a client who has an 80% blockage of the right coronary artery (RCA) and is scheduled for bypass surgery. Which intervention should the nurse be prepared to implement while this client waits for surgery?
- A. Administration of IV furosemide (Lasix)
- B. Initiation of an external pacemaker
- C. Assistance with endotracheal intubation
- D. Placement of central venous access
Correct Answer: B
Rationale: An 80% blockage of the RCA can lead to bradycardia or heart block. An external pacemaker may be needed to maintain adequate heart rate and cardiac output.
In the electrocardiogram of a 40-year old male, the QRS amplitude in lead I and aVF measured (+) 10 and (-)10mV respectively. The frontal QRS axis is
- A. (+) 15°
- B. (-) 45°
- C. (-) 75°
- D. (-) 90°
Correct Answer: B
Rationale: The frontal QRS axis is (-) 45° given the QRS amplitudes in leads I and aVF.
All of the following are true about a small VSD EXCEPT
- A. spontaneous closure is more common in muscular vs. membranous defects
- B. closure usually occurs in the first 2 years of life
- C. there is no risk of endocarditis
- D. pulmonary pressures are normal
Correct Answer: C
Rationale: Even small VSDs carry a risk of endocarditis until they close.
The most appropriate first-line treatment for status epilepticus in a child is:
- A. Diazepam
- B. Phenytoin
- C. Carbamazepine
- D. Valproate
Correct Answer: A
Rationale: Diazepam is commonly used as the first-line treatment in managing status epilepticus due to its fast-acting, long-lasting anticonvulsant effects.
A client with Guillain-Barre syndrome has paralysis of all extremities and requires mechanical ventilation. The nurse observes that the client is not blinking. Which action should the nurse implement?
- A. Protect cornea with lubricant and eye shields
- B. Administer artificial tears every hour.
- C. Encourage the client to blink every 10 minutes.
- D. Keep the client's eyes closed with adhesive tape.
Correct Answer: A
Rationale: Lack of blinking increases the risk of corneal damage. Lubricants and eye shields prevent dryness and injury to the cornea.