Nokea
Depending on the frequency and severity of hypercyanotic attacks in tetralogy of Fallot, all the following procedures are true EXCEPT
- A. placement of the infant in the knee-chest position
- B. administration of oxygen
- C. injection of morphine subcutaneously
- D. rapid correction with intravenous sodium bicarbonate
Correct Answer: D
Rationale: Intravenous sodium bicarbonate is not typically used for hypercyanotic attacks.
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Urinary tract infection:
- A. Usually leads to vesico-ureteric reflux
- B. Is more common in boys than girls under a year of age
- C. In boys,is most commonly caused by Proteus mirabilis
- D. Is associated with constipation
Correct Answer: D
Rationale: Urinary tract infections (UTIs) are often associated with constipation in children, as stool retention can increase the risk of bacterial colonization in the urinary tract.
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.
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.
The following are causes of cyanosis in the presence of 60% oxygen:
- A. Haemoglobin concentration < 5 g%
- B. Methaemoglobinaemia
- C. Thalassaemia
- D. Right to left shunt
Correct Answer: D
Rationale: A right-to-left shunt can cause cyanosis even in the presence of high oxygen levels. Methaemoglobinaemia and severe anemia (Hb < 5 g%) can also cause cyanosis.
Causes of a discrete osteolytic bone lesion in a two-year-old include:
- A. Rickets
- B. Non-accidental injury
- C. Eosinophilic granuloma
- D. Acute lymphoblastic leukaemia
Correct Answer: C
Rationale: Eosinophilic granuloma is a benign bone lesion that can present with osteolytic lesions, typically seen in children as part of Langerhans cell histiocytosis.