What should be monitored in a child with congenital adrenal hyperplasia (CAH)?
- A. Blood glucose levels
- B. Electrolyte balance
- C. Urine output
- D. Hemoglobin levels
Correct Answer: B
Rationale: In a child with congenital adrenal hyperplasia (CAH), monitoring electrolyte balance is crucial. CAH can lead to adrenal insufficiency, causing imbalances in electrolytes such as sodium and potassium. Monitoring electrolyte levels helps in preventing complications like dehydration, electrolyte disturbances, and adrenal crisis. While blood glucose levels may need monitoring in other conditions like diabetes, it is not the primary concern in CAH. Urine output is important in assessing kidney function but is not a direct monitoring parameter for CAH. Hemoglobin levels are more relevant in conditions such as anemia, not specifically in CAH.
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What is a common symptom of congenital heart disease in infants?
- A. Excessive weight gain
- B. Difficulty breathing
- C. High blood pressure
- D. Increased appetite
Correct Answer: B
Rationale: Difficulty breathing is a common symptom of congenital heart disease in infants. Infants with congenital heart disease may experience difficulty breathing due to impaired cardiac function, which affects the heart's ability to pump blood effectively. This symptom is often due to issues like heart failure or fluid accumulation in the lungs. Excessive weight gain (Choice A) is not typically associated with congenital heart disease in infants. High blood pressure (Choice C) is less common in infants with congenital heart disease compared to adults. Increased appetite (Choice D) is not a typical symptom of congenital heart disease in infants.
What type of vaccine should a child with a history of severe allergic reactions receive?
- A. Live attenuated vaccines
- B. Inactivated vaccines
- C. Subunit vaccines
- D. Recombinant vaccines
Correct Answer: B
Rationale: Children with a history of severe allergic reactions should receive inactivated vaccines because they do not contain live pathogens. Live attenuated vaccines (choice A) contain weakened live pathogens and can potentially trigger an allergic reaction in sensitive individuals. Subunit vaccines (choice C) and recombinant vaccines (choice D) may contain components that could still trigger an allergic response in individuals with a history of severe allergies. Inactivated vaccines are the safest choice for individuals with a history of severe allergic reactions as they do not pose a risk of causing an allergic reaction due to the absence of live pathogens.
How should a healthcare provider manage a child with newly diagnosed congenital hypothyroidism?
- A. Monitor for signs of hyperactivity
- B. Ensure regular thyroid hormone replacement therapy
- C. Encourage a high-calcium diet
- D. Increase physical exercise
Correct Answer: B
Rationale: Correct Answer: Ensuring regular thyroid hormone replacement therapy is crucial for managing congenital hypothyroidism in children. This therapy supports normal growth and development by replacing the deficient thyroid hormones. Monitoring for signs of hyperactivity (Choice A) is not the primary management for congenital hypothyroidism; rather, the focus should be on addressing the hormone deficiency. Encouraging a high-calcium diet (Choice C) may not directly address the thyroid hormone deficiency characteristic of congenital hypothyroidism. Increasing physical exercise (Choice D) is not the mainstay treatment for this condition; hormone replacement therapy is the cornerstone of management.
You have been asked to help a top nutrition researcher conduct human experiments on vitamin C. As the subjects walk into the laboratory, you distribute all the vitamin C pill bottles to the girls and all the placebo pill bottles to the boys. What should you have done?
- A. Giving all the boys the vitamin C and the girls the placebo, and telling them what they were getting.
- B. Distributing the bottles randomly, randomizing the subjects, and telling them what they were getting.
- C. Telling the subjects which group they were in, but preventing yourself from knowing the contents of the pill bottles.
- D. Preventing yourself from knowing what is in the pill bottles, and distributing the bottles randomly to the subjects.
Correct Answer: D
Rationale: The correct approach in a scientific experiment is to prevent yourself from knowing the contents of the pill bottles and distribute them randomly to the subjects. This randomization helps to avoid bias and ensures that the results are not influenced by preconceived notions. Option A is incorrect because it introduces gender bias by assigning pills based on gender. Option B is incorrect as it mentions telling the subjects what they are getting, which could lead to placebo effects. Option C is incorrect as it suggests disclosing group information to the subjects, which can also introduce bias.
By chemical analysis, what nutrient is present in the highest amounts in most foods?
- A. fats
- B. water
- C. proteins
- D. carbohydrates
Correct Answer: B
Rationale: The correct answer is B. Water is the most abundant nutrient in many foods. Water content varies across different foods, but in general, it is present in the highest amounts. Fats (Choice A) are essential but are not found in higher amounts compared to water. Proteins (Choice C) and carbohydrates (Choice D) are also important nutrients, but they are typically found in lower quantities in most foods compared to water.