Nokea
Ejection systolic murmur in outflow in a neonate is least likely to be due to
- A. Subaortic membrane
- B. Unicuspid aortic valve
- C. Bicuspid aortic valve
- D. Pulmonary stenosis
Correct Answer: A
Rationale: Subaortic membrane is least likely to cause an ejection systolic murmur in a neonate.
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A nurse cares for a client who is prescribed magnetic resonance imaging (MRI) of the heart. The client’s health history includes a previous myocardial infarction and pacemaker implantation. Which action should the nurse take?
- A. Schedule an electrocardiogram just before the MRI.
- B. Notify the healthcare provider before scheduling the MRI.
- C. Call the physician and request a laboratory draw for cardiac enzymes.
- D. Instruct the client to increase fluid intake the day before the MRI.
Correct Answer: B
Rationale: Clients with pacemakers are generally not candidates for MRI due to the risk of device malfunction or tissue damage. The healthcare provider must be notified to determine the best course of action.
Frequent complications of Mycoplasma infection include:
- A. Thrombocytopenia
- B. Haemolytic anaemia
- C. Cardiac conduction defects
- D. Pleural effusion
Correct Answer: B
Rationale: Haemolytic anaemia: Mycoplasma infections, particularly with Mycoplasma pneumoniae, can lead to autoimmune haemolytic anaemia, where the body’s immune system destroys red blood cells.
A 3-year-old child is receiving dextrose 5% in water and half-normal saline solution at 100 ml/hour. Which sign or symptom suggests excessive I.V. fluid intake?
- A. Worsening dyspnea
- B. Gastric distension
- C. Nausea and vomiting
- D. Temperature of 102°F (38.9° C)
Correct Answer: A
Rationale: Worsening dyspnea may indicate fluid overload, leading to pulmonary edema and respiratory distress.
The following antibiotics interfere with bacterial translation:
- A. Penicillin
- B. Ceftriaxone
- C. Azithromycin
- D. Ciprofloxacin
Correct Answer: C
Rationale: Azithromycin, a macrolide antibiotic, inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, thereby interfering with translation.
The nurse is teaching parents about signs of digoxin (Lanoxin) toxicity. Which is a common sign of digoxin toxicity?
- A. Seizures
- B. Vomiting
- C. Bradypnea
- D. Tachycardia
Correct Answer: B
Rationale: Vomiting is a common sign of digoxin toxicity. Seizures are not associated with digoxin toxicity. The child will have a slower heart rate, not respiratory rate. The heart rate will be slower, not faster.