Correct Answer: C

Rationale: Pyloric stenosis in infants typically presents with an olive-shaped mass in the upper abdomen due to hypertrophy of the pyloric muscle. This mass can often be palpated during an assessment and is a key characteristic of this condition. Bile-stained vomitus may be seen in conditions such as intestinal obstruction; a distended abdomen can be a nonspecific sign of various conditions, and painless, swollen joints are not typically associated with pyloric stenosis.

Correct Answer: A

Rationale: Around 30-33 weeks after conception, infants usually start closing their eyes in response to bright lights and exhibit enhanced head control. This developmental milestone indicates progress in their visual and motor abilities, reflecting the maturation of their neurological system. As preterm infants continue to grow and develop, they gradually acquire these skills, showcasing the natural progression of their sensory and motor functions.

Correct Answer: A

Rationale: When assessing an infant with pneumonia, the priority finding to report to the provider is nasal flaring. Nasal flaring indicates acute respiratory distress, which can be a life-threatening condition requiring immediate intervention. Monitoring and addressing respiratory distress take precedence over other symptoms or laboratory results in this situation.

Correct Answer: A

Rationale: A strong therapeutic relationship can significantly influence the development of positive behaviors in children. When a child feels connected, understood, and supported by a therapist, it can lead to better outcomes in promoting positive behaviors and emotional well-being.

Correct Answer: B

Rationale: For patients who lack risk factors for GI bleeding, combined use of clopidogrel with a PPI, may reduce the effects of clopidogrel without offering any real benefits and thus should be avoided.