What is the recommended method to assess hydration status in infants?
- A. Capillary refill time
- B. Skin turgor
- C. Urine output
- D. Mucous membranes
Correct Answer: C
Rationale: The correct answer is C: Urine output. Assessing urine output is a recommended method to determine hydration status in infants. Adequate urine output indicates good hydration, while decreased urine output may suggest dehydration. Capillary refill time (Choice A) is more indicative of circulatory status rather than hydration. Skin turgor (Choice B) is a useful assessment in adults but can be less reliable in infants. Checking mucous membranes (Choice D) can provide some information on hydration, but it is not as reliable as assessing urine output in infants.
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What is the most common cause of bronchiolitis in infants?
- A. Adenovirus
- B. Influenza virus
- C. Respiratory syncytial virus
- D. Parainfluenza virus
Correct Answer: C
Rationale: The correct answer is C, Respiratory syncytial virus (RSV). RSV is the leading cause of bronchiolitis, a common respiratory condition in infants that results in inflammation of the small airways in the lung. It is highly contagious and can cause severe respiratory distress in young children, particularly those under 2 years old. Choice A, Adenovirus, is not the most common cause of bronchiolitis in infants. Choice B, Influenza virus, may cause respiratory infections but is not the primary cause of bronchiolitis. Choice D, Parainfluenza virus, can cause croup and other upper respiratory infections but is not the main cause of bronchiolitis in infants.
Which condition is characterized by a harsh, barking cough in children?
- A. Asthma
- B. Bronchiolitis
- C. Croup
- D. Pneumonia
Correct Answer: C
Rationale: Croup is the correct answer. It is characterized by a harsh, barking cough due to inflammation of the upper airways, specifically the larynx and trachea. Asthma (Choice A) often presents with wheezing and shortness of breath, not a barking cough. Bronchiolitis (Choice B) typically causes wheezing and respiratory distress in infants. Pneumonia (Choice D) manifests with symptoms such as fever, productive cough, and chest pain, but not usually a barking cough.
What is typically the first sign of puberty in females?
- A. Breast development
- B. Menarche
- C. Pubic hair growth
- D. Axillary hair growth
Correct Answer: A
Rationale: The correct answer is A: Breast development (thelarche) is usually the first sign of puberty in females, typically beginning between ages 8 and 13. This marks the start of puberty, followed by pubic hair growth, a growth spurt, and eventually menarche (the onset of menstruation). Pubic hair growth and axillary hair growth usually follow breast development in the sequence of pubertal changes. Therefore, the first noticeable change indicating the onset of puberty in females is the development of breast buds.
What should the healthcare provider consider when providing support to a family whose infant has just been diagnosed with biliary atresia?
- A. The prognosis for full recovery is excellent.
- B. Death usually occurs by 6 months of age.
- C. Liver transplantation may be needed eventually.
- D. Children with surgical correction live normal lives.
Correct Answer: C
Rationale: When supporting a family whose infant has been diagnosed with biliary atresia, it is important to consider that liver transplantation may be needed eventually. Biliary atresia is a serious condition where bile flow from the liver to the gallbladder is blocked or absent. While surgical interventions like the Kasai procedure can temporarily improve bile flow and delay the need for transplantation, the long-term survival often depends on liver transplantation as the child grows older. Choices A, B, and D are incorrect because the prognosis for full recovery is not excellent as biliary atresia is a chronic condition that often requires ongoing medical management, death usually does not occur by 6 months of age but the condition does require intervention, and not all children with surgical correction can live normal lives without the need for further interventions like transplantation.
What is the most common symptom of gastroesophageal reflux in infants?
- A. Projectile vomiting
- B. Bilious vomiting
- C. Frequent spitting up
- D. Diarrhea
Correct Answer: C
Rationale: Frequent spitting up is indeed a common symptom of gastroesophageal reflux in infants. It is caused by the backward flow of stomach contents into the esophagus, leading to infants regurgitating milk or formula shortly after feeding. Projectile vomiting (choice A) is more commonly associated with conditions like pyloric stenosis rather than gastroesophageal reflux. Bilious vomiting (choice B) often indicates an obstruction in the gastrointestinal tract. Diarrhea (choice D) is not typically a primary symptom of gastroesophageal reflux in infants.