Nokea
Mycoplasma pneumonia:
- A. Is associated with bullous myringitis
- B. Cold haemaglutinin antibodies are a recognised finding
- C. Guillain-Barre syndrome is a recognised sequel
- D. Is associated with erythema marginatum
Correct Answer: B
Rationale: Cold haemagglutinin antibodies are a recognized finding in Mycoplasma pneumonia. Bullous myringitis and Guillain-Barre syndrome are also associated.
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Pulsus paradoxus is associated with
- A. pericarditis
- B. endocarditis
- C. rheumatic fever
- D. myocarditis
Correct Answer: A
Rationale: Pulsus paradoxus is commonly associated with pericardial diseases such as constrictive pericarditis.
Renin:
- A. Is secreted mainly in extrarenal tissues
- B. Secretion increases on lying supine
- C. Secretion increases with potassium
- D. Converts angiotensin I into angiotensin II
Correct Answer: D
Rationale: Renin is an enzyme produced by the kidneys that converts angiotensin I into angiotensin II which plays a key role in regulating blood pressure and fluid balance. The other options are incorrect because renin is not mainly secreted in extrarenal tissues its secretion does not increase on lying supine or with potassium and it does not regulate osmolality.
A father asks why his child with tetralogy of Fallot seems to favor a squatting position. What is the nurse’s best response?
- A. Squatting increases the return of venous blood back to the heart.
- B. Squatting decreases arterial blood flow away from the heart.
- C. Squatting is a common resting position when a child is tachycardic.
- D. Squatting increases the workload of the heart.
Correct Answer: A
Rationale: The squatting position allows the child to breathe more easily because systemic venous return is increased.
One-year-old child:
- A. Holds a raisin with a finger and thumb
- B. Drinks with a straw
- C. Tells six words with meaning
- D. Can move around holding onto furniture (cruising)
Correct Answer: D
Rationale: By one year of age, most children can cruise (move around while holding onto furniture), a key milestone in motor development.
The following statements are true about screening:
- A. The sensitivity of a screening test is the extent of picking up true negatives
- B. Positive predictive value is dependent on the population being screened
- C. A good screening test is always inexpensive
- D. Screening for Duchenne muscular dystrophy is not practised, mainly because of the extent of false positives in the test
Correct Answer: B
Rationale: The positive predictive value of a screening test is influenced by the prevalence of the condition in the population being screened.