Nokea
What is the purpose of using cimetidine (Tagamet) for gastroesophageal reflux?
- A. The medication reduces gastric acid secretion.
- B. The medication neutralizes the acid in the stomach.
- C. The medication increases the rate of gastric emptying time.
- D. The medication coats the lining of the stomach and esophagus.
Correct Answer: A
Rationale: The correct answer is A. Cimetidine (Tagamet) is an H2 receptor antagonist that works by reducing gastric acid secretion. This action helps to decrease the acidity in the stomach, which in turn reduces the symptoms of gastroesophageal reflux. Choice B is incorrect because cimetidine does not neutralize acid but rather decreases its production. Choice C is incorrect as cimetidine does not affect the rate of gastric emptying time. Choice D is incorrect as cimetidine does not coat the lining of the stomach and esophagus but instead works to reduce gastric acid secretion.
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What is the primary goal in the treatment of a child with nephrotic syndrome?
- A. Decrease urine output
- B. Increase serum albumin
- C. Reduce proteinuria
- D. Increase blood pressure
Correct Answer: C
Rationale: The primary goal in treating nephrotic syndrome in children is to reduce proteinuria. Nephrotic syndrome is characterized by proteinuria, leading to hypoalbuminemia and edema. By reducing proteinuria, kidney damage can be minimized, and symptoms can be managed effectively. Decreasing urine output (Choice A) is not the primary goal, as it does not address the underlying issue of protein loss. Increasing serum albumin (Choice B) is a consequence of reducing proteinuria rather than the primary goal. Increasing blood pressure (Choice D) is not a goal in treating nephrotic syndrome and may even be contraindicated to prevent further kidney damage.
Which congenital heart defect causes a "boot-shaped" heart on a chest x-ray?
- A. Tetralogy of Fallot
- B. Coarctation of the aorta
- C. Transposition of the great arteries
- D. Ventricular septal defect
Correct Answer: A
Rationale: The correct answer is A: Tetralogy of Fallot. Tetralogy of Fallot, a congenital heart defect with four distinct abnormalities, often presents with a "boot-shaped" heart on chest x-ray due to right ventricular hypertrophy. This characteristic finding is due to the specific combination of defects in this condition. Coarctation of the aorta (choice B), Transposition of the great arteries (choice C), and Ventricular septal defect (choice D) do not typically result in a "boot-shaped" heart on a chest x-ray like Tetralogy of Fallot does.
What is the most common cause of acute kidney injury in children?
- A. Dehydration
- B. Glomerulonephritis
- C. Hemolytic uremic syndrome
- D. Sepsis
Correct Answer: C
Rationale: Hemolytic uremic syndrome is the most common cause of acute kidney injury in children. While dehydration can lead to prerenal acute kidney injury, it is not the most common cause in children. Glomerulonephritis is a common cause of chronic kidney disease but not typically the most common cause of acute kidney injury in children. Sepsis can lead to acute kidney injury, but in children, hemolytic uremic syndrome is more prevalent.
Which of the following is a key feature of autism spectrum disorder?
- A. Delayed speech development
- B. Hyperactivity
- C. Lack of interest in toys
- D. Aggressive behavior
Correct Answer: A
Rationale: Delayed speech development is a significant feature of autism spectrum disorder. Many children with autism exhibit delays in speech and language development, which can be one of the early signs of the condition. Hyperactivity, lack of interest in toys, and aggressive behavior are not key defining features of autism spectrum disorder. While some individuals with autism may exhibit these behaviors, they are not universally characteristic of the disorder.
The nurse observes that a newborn is having problems after birth. What should indicate a tracheoesophageal fistula?
- A. Jitteriness
- B. Meconium ileus
- C. Excessive frothy saliva
- D. Increased need for sleep
Correct Answer: C
Rationale: Excessive frothy saliva is a hallmark sign of tracheoesophageal fistula. The abnormal connection between the esophagus and trachea causes difficulty in swallowing, leading to an accumulation of saliva in the mouth. This symptom is crucial for early identification and management of tracheoesophageal fistula. Choices A, B, and D are incorrect as they are not specific indicators of tracheoesophageal fistula.