Nokea
Acetazolamide:
- A. Is used in the management of renal tubular acidosis
- B. Causes hypokalaemia
- C. Is usually given intravenously
- D. Inhibits the action of carbonic anhydrase
Correct Answer: D
Rationale: Inhibits the action of carbonic anhydrase: Acetazolamide works by inhibiting carbonic anhydrase, reducing the reabsorption of bicarbonate in the kidneys and helping with conditions like glaucoma, metabolic alkalosis, and altitude sickness.
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A 6-year-old child has a systolic blood pressure between the 95th and 99th percentile for age, sex, and height and a diastolic blood pressure between the 90th and the 95th percentile on three separate clinic visits. This child's blood pressure is placed in which classification?
- A. normotensive
- B. pre-hypertensive
- C. stage 1 hypertensive
- D. stage 2 hypertensive
Correct Answer: C
Rationale: Stage 1 hypertensive pressure ranges from the 95th percentile or from 120/80 mm Hg to 5 mm Hg above the 99th percentile for age, sex, and height for either systolic or diastolic pressure.
Which congenital cardiac defect(s) cause(s) increased pulmonary blood flow? (Select all that apply.)
- A. Atrial septal defects (ASDs)
- B. Tetralogy of Fallot
- C. Dextroposition of aorta
- D. Patent ductus arteriosus
Correct Answer: D
Rationale: The congenital heart defects that cause increased pulmonary blood flow are ASDs, VSDs, and patent ductus arteriosus.
Rett syndrome is characterised by:
- A. Social withdrawal
- B. Self-mutilation
- C. Macrocephaly
- D. Wringing hand movements
Correct Answer: D
Rationale: Wringing hand movements are a hallmark feature of Rett syndrome, a neurodevelopmental disorder primarily affecting females.
Severe pulmonary valve stenosis is defined as a peak gradient of
- A. >40 mm Hg
- B. >45 mm Hg
- C. >50 mm Hg
- D. >55 mm Hg
Correct Answer: C
Rationale: Severe pulmonary valve stenosis is generally defined as a peak gradient >50 mm Hg.
Coxsackie viruses are implicated in:
- A. Herpangina
- B. Dermatitis herpetiformis
- C. Meningitis
- D. Orchitis
Correct Answer: A
Rationale: Coxsackie viruses are a common cause of herpangina. They can also cause meningitis and orchitis, but dermatitis herpetiformis is not associated with Coxsackie viruses.