what is the most common cause of bronchiolitis in infants
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Nursing Elites

ATI RN

ATI Nursing Care of Children 2019 B

1. What is the most common cause of bronchiolitis in infants?

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.

2. When transitioning from intravenous to oral morphine, what would the nurse anticipate regarding the oral dose in comparison to the intravenous dose to achieve equianalgesia?

Correct answer: B

Rationale: When switching from intravenous to oral morphine, a higher oral dose is required to achieve equianalgesia due to significant metabolism from the first-pass effect. Choosing the same oral dose as the intravenous dose would provide less pain relief. Opting for a dose greater than the intravenous dose is necessary to achieve the same analgesic effect. Therefore, options A, C, and D are incorrect.

3. The LPN is assessing for fontanels on the head of a 6-month-old. Which fontanel is expected to still be present?

Correct answer: B

Rationale: The correct answer is B: Anterior. The anterior fontanel usually remains open until about 12-18 months of age, while the posterior fontanel closes by 2-3 months. Choices A, C, and D are incorrect as the posterior fontanel closes by 2-3 months of age, and the sphenoid and lambdoid fontanels are not typically assessed in routine infant head examinations.

4. In assessing sexual maturity levels, which tool would you expect to use?

Correct answer: B

Rationale: The correct answer is B: Tanner staging. Tanner staging is a tool specifically used to assess sexual maturity in adolescents based on the development of secondary sexual characteristics. The Tanner scale ranges from stage 1 (prepubertal) to stage 5 (adult maturity). This tool helps healthcare providers evaluate the physical development and sexual maturation of individuals. Choice A, the Denver II Developmental Screening, is used to assess developmental milestones in children. Choice C, antibody testing, is a diagnostic tool used to detect the presence of specific antibodies in the blood. Choice D, the nursing process, is a systematic method that nurses use to deliver patient-centered care, involving assessment, diagnosis, planning, implementation, and evaluation.

5. What is a classic sign of congenital hypothyroidism in newborns?

Correct answer: C

Rationale: Prolonged jaundice is a classic sign of congenital hypothyroidism in newborns. In congenital hypothyroidism, the thyroid gland does not produce enough thyroid hormones, leading to symptoms like jaundice, poor feeding, constipation, and lethargy. While jaundice itself is a common condition in newborns, the term 'prolonged jaundice' specifically points towards the underlying thyroid issue. Hypothermia and excessive crying are not typically associated with congenital hypothyroidism.

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