Nokea
A 6-month-old presents with tachycardia, tachypnea, and poor feeding for 3 months. Physical examination reveals a continuous machinery murmur and a wide pulse pressure with a prominent apical impulse. The most likely diagnosis is
- A. pulmonic stenosis
- B. aortic stenosis
- C. ventricular septal defect
- D. patent ductus arteriosus
Correct Answer: D
Rationale: Patent ductus arteriosus causes a continuous machinery murmur and wide pulse pressure.
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The following conditions are associated with hyperammonaemia:
- A. Reye syndrome
- B. Citrullinaemia
- C. Methylmalonic acidaemia
- D. Homocystinuria
Correct Answer: A
Rationale: Reye syndrome is associated with hyperammonaemia due to liver dysfunction and impaired urea cycle function, leading to ammonia accumulation.
A 2-month-old male presents with tachycardia, dyspnea, tachypnea, and a gallop rhythm with no heart murmur. He was perfectly well until 1 day prior to the episode. The physical examination reveals a heart rate of 235, a temperature of 37.8°C, and a normal blood pressure with warm, well-perfused extremities. The most likely diagnosis is
- A. sepsis
- B. supraventricular tachycardia
- C. ingestion
- D. ventricular tachycardia
Correct Answer: B
Rationale: Supraventricular tachycardia can cause rapid heart rates and heart failure in infants.
The following are common side effects of sildenafil EXCEPT
- A. flushing
- B. elevated liver function tests
- C. headache
- D. myalgia
Correct Answer: B
Rationale: Elevated liver function tests are not a common side effect of sildenafil.
An emergency room nurse obtains the health history of a client. Which statement by the client should alert the nurse to the occurrence of heart failure?
- A. I get short of breath when I climb stairs.
- B. I see halos floating around my head.
- C. I have trouble remembering things.
- D. I have lost weight over the past month.
Correct Answer: A
Rationale: Shortness of breath, especially during exertion, is a classic symptom of heart failure due to the heart's inability to pump blood effectively.
Normal Heart
- A. Ventricular septal depolarization occurs from Lt ï‚® Rt
- B. During tachycardia diastolic time reduced than systolic time
Correct Answer: B
Rationale: During tachycardia, diastolic time is significantly reduced compared to systolic time.