Nokea
Dome and dart P wave in lead V1 in electrocardiogram is suggestive of which of the following?
- A. Dextrocardia
- B. Left atrial ectopic rhythm
- C. Biatrial enlargement
- D. Mitral stenosis
Correct Answer: C
Rationale: The dome and dart P wave morphology is characteristic of biatrial enlargement, often seen in conditions like mitral stenosis and atrial fibrillation.
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The enzyme producing carbon monoxide within the human body is
- A. Aminolevulinic acid synthase
- B. Heme oxygenase
- C. Cyclo-oxygense
- D. Nitric oxide synthase
Correct Answer: B
Rationale: Heme oxygenase is responsible for the production of carbon monoxide during the breakdown of heme.
Examples of encapsulated organisms are all except:
- A. Pseudomonas
- B. Proteus
- C. Pneumococci
- D. Salmonella
Correct Answer: A
Rationale: The correct answer is A because Pseudomonas is not an encapsulated organism. The other options (b-e) are encapsulated.
Urinary tract infection:
- A. Usually leads to vesico-ureteric reflux
- B. Is more common in boys than girls under a year of age
- C. In boys,is most commonly caused by Proteus mirabilis
- D. Is associated with constipation
Correct Answer: D
Rationale: Urinary tract infections (UTIs) are often associated with constipation in children, as stool retention can increase the risk of bacterial colonization in the urinary tract.
The treatment of choice for the lesion of the neonate is
- A. digoxin
- B. propranolol (Inderal)
- C. surgical shunt
- D. balloon valvuloplasty
Correct Answer: D
Rationale: Balloon valvuloplasty can relieve pulmonary stenosis and improve symptoms in Tetralogy of Fallot.
While looking through the chart of an infant with a congenital heart defect (CHD) of decreased pulmonary blood flow, the nurse would expect which laboratory finding?
- A. Decreased platelet count
- B. Decreased ferritin level
- C. Respiratory alkalosis
- D. Polycythemia
Correct Answer: D
Rationale: Polycythemia is often seen in infants with congenital heart defects that cause decreased pulmonary blood flow, as the body produces more red blood cells to compensate for low oxygen levels.