Nokea
Which among the following beta-blockers is not potent than propranolol (considering propranolol = 1)?
- A. Carvedilol
- B. Metoprolol
- C. Bisoprolol
- D. Labetalol
Correct Answer: D
Rationale: Labetalol has a lower beta-blocking potency compared to propranolol, especially considering it also has alpha-blocking activity.
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Prior to the patient being given medication, he becomes hypotensive, mottled, and cold. His heart rate is 240. The next therapeutic step should be
- A. digoxin
- B. synchronized DC cardioversion
- C. lidocaine
- D. defibrillation
Correct Answer: B
Rationale: Synchronized DC cardioversion is indicated for unstable tachycardia unresponsive to pharmacological agents.
Appropriate initial management steps in an acute anaphylactic reaction to a blood transfusion include:
- A. Nebulised steroids
- B. Oxygen
- C. Intravenous hydrocortisone
- D. Intravenous anti-H2 agent
Correct Answer: B
Rationale: Oxygen is a critical initial management step in anaphylaxis to ensure adequate oxygenation during the acute phase.
A nurse assesses a client after administering a prescribed beta blocker. Which assessment should the nurse expect to find?
- A. Blood pressure increased from 98/42 mm Hg to 132/60 mm Hg
- B. The respiratory rate decreased from 25 breaths/min to 14 breaths/min
- C. Pulse decreased from 100 beats/min to 80 beats/min
- D. Oxygen saturation increased from 88% to 96%
Correct Answer: D
Rationale: Beta blockers reduce heart rate and blood pressure. A decrease in pulse rate from 100 beats/min to 80 beats/min is consistent with the expected pharmacological effect of a beta blocker.
An 8-year-old from the former Soviet Union is brought to your office because of a heart murmur and dusty blue skin. He has marked clubbing of his fingers and toes, and his hematocrit is 70%. He has a grade 4/6 holosystolic murmur. His chest x-ray reveals a normal pulmonary blood flow as well as a right-sided aortic arch. What is the likely diagnosis?
- A. total anomalous venous return
- B. tetralogy of Fallot
- C. Eisenmenger syndrome
- D. transposition of the great vessels
Correct Answer: C
Rationale: Eisenmenger syndrome involves reversal of shunt direction due to long-standing pulmonary hypertension, explaining the cyanosis and clubbing.
The following are suggestive of abnormal language development:
- A. Not localising sound at 4 months of age
- B. No response to human words at 6 weeks
- C. Not understanding 'no' at 18 months of age
- D. Does not move to music at 2 years of age
Correct Answer: C
Rationale: Failure to understand simple commands like 'no' by 18 months is a red flag for abnormal language development.