Correct Answer: D

Rationale: The correct answer is D: 'Your baby's skin will have a leathery appearance.' Postmature infants, born after 42 weeks of gestation, may have a leathery appearance of the skin due to prolonged exposure to amniotic fluid. This occurs as the protective vernix caseosa is shed, and the skin loses its protective covering, leading to a wrinkled and dry appearance. Choices A, B, and C are incorrect. Excess baby fat is not a typical characteristic of postmature infants. Flat areola without breast buds and the ability of the baby's heels to easily move to his ears are not associated with postmaturity.

Correct Answer: B

Rationale: The regression in toilet training is a common adverse sibling response to the birth of a new baby. When a new sibling arrives, the older child may revert to behaviors from an earlier stage, such as bedwetting, to gain attention or cope with feelings of insecurity. This behavior is temporary and often resolves with time and reassurance. Recommending counseling or preschool at this point would be premature and not addressing the underlying cause of the behavior.

Correct Answer: B

Rationale: The classification of a newborn as appropriate for gestational age is determined by considering the weight and gestational age. In this case, the newborn's weight falls within the normal range for the gestational age, indicating that the newborn is appropriately sized for the length of time spent in the womb. Choice A, 'Low birth weight,' is incorrect as the newborn's weight is within the normal range. Choice C, 'Small for gestational age,' is incorrect because the newborn's weight is not below the 10th percentile for gestational age. Choice D, 'Large for gestational age,' is incorrect as the newborn's weight is not above the 90th percentile, rather falling within the 60th percentile which is considered normal.

Correct Answer: A

Rationale: The correct treatment for chlamydia is a one-time dose of azithromycin. It is crucial for the client to understand the correct medication regimen for effective treatment. Choice B is incorrect because treatment is necessary for the partner even if asymptomatic. Choice C is incorrect because sexual relations should be avoided until treatment is completed. Choice D is incorrect as retesting should generally occur 3 months after treatment.

Correct Answer: C

Rationale: The Apgar score is calculated based on five parameters: heart rate, respiratory effort, muscle tone, reflex irritability, and color. In this case, the newborn's findings at 1 minute after delivery indicate a heart rate >100/min (2 points), slow, weak cry (1 point), some flexion of extremities (1 point), grimace in response to suctioning (1 point), and body pink with blue extremities (1 point). Adding these points together results in a total Apgar score of 6, reflecting the newborn's initial assessment for their overall well-being. Choice A (4) is too low based on the given findings, while Choice B (5) is also lower than the correct score of 6. Choice D (7) is too high as it would require additional findings to reach that score.