Nokea
Hypothalamic nuclei are responsible for:
- A. Control of hunger
- B. Temperature control
- C. Maintaining osmolarity of extracellular fluid
- D. Secretion of thyrotrophin
Correct Answer: A
Rationale: The hypothalamus plays a key role in regulating hunger through various nuclei and hormonal signals.
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Which among the following is not a feature of low flow - low gradient severe aortic stenosis with preserved left ventricular function?
- A. Mean trans aortic pressure gradient < 40 mm Hg
- B. Aortic valve area < 1 cm²
- C. Stroke volume > 35 ml/m²
- D. Left ventricular ejection fraction > 50%
Correct Answer: C
Rationale: Stroke volume is typically reduced, not increased, in low flow - low gradient severe aortic stenosis.
Which statement by a parent of an infant with congestive heart failure (CHF) who is being sent home on digoxin indicates the need for further education?
- A. I will give the medication at regular 12-hour intervals.
- B. If he vomits, I will not give a make-up dose.
- C. If I miss a dose, I will not give an extra dose.
- D. I will mix the digoxin in some formula to make it taste better.
Correct Answer: D
Rationale: Mixing digoxin with formula can lead to incomplete ingestion and inadequate dosing. Digoxin must be given in its entirety at the prescribed times.
Paediatric HIV infection:
- A. Is similar to adult HIV infection except for the mode of transmission
- B. Antenatal screening of pregnant women is not of proven benefit
- C. Developmental delay is a recognised presentation
- D. In an infant, the diagnosis is established first before any management steps are undertaken
Correct Answer: C
Rationale: Developmental delay is a recognized presentation of paediatric HIV infection, reflecting the impact of the virus on the developing nervous system.
Inability to do which of the following in a 20-month child is cause for concern?
- A. Speak in clear two to three word phrases
- B. Walk unaided
- C. Kick a ball
- D. Build a tower of 8 blocks
Correct Answer: B
Rationale: Inability to walk unaided by 20 months is a red flag for developmental delay. Other skills are more variable and less concerning if delayed.
All of the following are part of acute aortic syndrome, except
- A. Aortic dissection
- B. Acute aortic regurgitation
- C. Intramural hematoma
- D. Penetrating atherosclerotic ulcer
Correct Answer: B
Rationale: Acute aortic regurgitation is not typically considered part of acute aortic syndrome.