Correct Answer: B

Rationale: A heart rate of 80 bpm is least likely to be observed in a normal newborn. The normal heart rate range for a newborn is usually higher than 80 bpm, typically ranging from 120-160 bpm. The Moro reflex (choice A) is a normal newborn reflex, respirations being irregular (choice C) are expected due to the immature respiratory control center, and an uneven head shape (choice D) is common due to molding during vaginal delivery.

Correct Answer: B

Rationale: Applying a warm compress to the lower abdomen can help relax the muscles and stimulate voiding in postpartum clients. It promotes vasodilation, increases blood flow to the area, and can aid in relieving urinary retention. Encouraging caffeine-free beverages can also be beneficial as caffeine can irritate the bladder and worsen the situation. Increasing fluid intake helps prevent urinary stasis and promotes bladder emptying. Kegel exercises can strengthen pelvic floor muscles over time, but in the immediate situation of difficulty voiding, a warm compress is more appropriate.

Correct Answer: A

Rationale: Initiating breastfeeding within the first half-hour after birth is crucial for successful breastfeeding and bonding, as recommended by the World Health Organization. This early initiation helps establish breastfeeding and supports the newborn's health by providing colostrum, the nutrient-rich first milk. Choice B, 'After the newborn's first bath,' is incorrect because initiating breastfeeding should not be delayed after birth. Choice C, 'When the newborn begins to cry,' is incorrect as it does not promote timely initiation of breastfeeding. Choice D, 'After administering vitamin K,' is incorrect because breastfeeding initiation should not be delayed for this procedure.

Correct Answer: A

Rationale: The correct answer is A: Allergy. Allergy is not an infectious cause of diarrhea. Diarrhea caused by bacteria, parasites, and viruses is due to infection, while an allergy triggers an immune response that can lead to diarrhea but is not caused by an infectious agent. Choices B, C, and D are incorrect because bacteria, parasites, and viruses are known infectious causes of diarrhea, resulting from infections by these microorganisms.

Correct Answer: A

Rationale: The correct answer is A, Cephalohematoma. Physiologic jaundice in newborns can occur due to the breakdown of excess red blood cells. A cephalohematoma, a collection of blood caused by ruptured blood vessels between a cranial bone's surface and periosteal membrane, can lead to increased red blood cell breakdown. This increased breakdown can contribute to the development of physiologic jaundice in newborns. Choices B, Mongolian spots, and C, Telangiectatic nevi, are both benign skin conditions and are not directly associated with increased red blood cell breakdown. Choice D, Molding, refers to the shaping of the fetal head during passage through the birth canal and is not related to the development of physiologic jaundice.