Nokea
What is the age-predicted maximum heart rate in a 60-year old man on beta blockers?
- A. 122
- B. 133
- C. 155
- D. 166
Correct Answer: A
Rationale: Beta blockers reduce the maximum heart rate. The age-predicted maximum heart rate for a 60-year-old on beta blockers is approximately 122 bpm.
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The following causes of short stature respond to growth hormone:
- A. Turner's syndrome
- B. Panhypopituitarism
- C. Achondroplasia
- D. Social deprivation
Correct Answer: A
Rationale: Turner's syndrome is a condition that responds to growth hormone therapy. Panhypopituitarism also responds, but Achondroplasia and social deprivation do not.
Regarding mitral valve prolapse, all the following are true EXCEPT
- A. it is predominantly in girls
- B. it is usually sporadic
- C. the dominant abnormal signs are auscultatory
- D. antibiotic prophylaxis is recommended during surgery and dental procedures
Correct Answer: D
Rationale: Antibiotic prophylaxis is no longer universally recommended for mitral valve prolapse.
An infant aged 16 months was referred for assessment of suspected mental retardation. Which of the following findings is/are outside the normal range?
- A. He does not scribble spontaneously with pencil on paper
- B. He does not walk alone
- C. Ma' and 'Dada' are the only recognisable words
- D. He is unable to build a tower of four cubes
Correct Answer: B
Rationale: Not walking alone by 16 months is a concern. Scribbling, limited vocabulary, and building towers are less concerning at this age.
22q11 deletion is commonly associated with all except
- A. Tetralogy of Fallot
- B. Truncus arteriosus
- C. Interrupted aortic arch
- D. D-Transposition of great arteries
Correct Answer: D
Rationale: 22q11 deletion is not commonly associated with D-Transposition of great arteries.
Superior axis in ECG seen in
- A. AV canal defects
- B. Ebstein anomaly
- C. Tricuspid atresia
- D. Single ventricle
Correct Answer: B
Rationale: Ebstein's anomaly causes superior axis deviation on ECG.