A specific clinical feature of respiratory distress syndrome includes

Correct Answer: B

Rationale: The correct answer is B: Grunting on expiration. In respiratory distress syndrome, the infant may exhibit grunting on expiration due to the difficulty in maintaining lung inflation during exhalation. This is a compensatory mechanism to increase functional residual capacity. Grunting on inspiration (choice A) may be seen in other respiratory conditions. Flaring of the nostrils (choice C) is a sign of increased work of breathing but is not specific to respiratory distress syndrome. Neonatal tachycardia (choice D) can be a nonspecific sign of distress and is not a specific feature of respiratory distress syndrome.

Correct Answer: A

Rationale: The correct answer is A because an acute small for gestational age neonate will have all body parts proportionately reduced in size compared to a normal gestational age baby. This is due to intrauterine growth restriction. Choice B is incorrect because the head is not disproportionately larger. Choice C is incorrect as it states the body is larger than the head, which is not the case in SGA babies. Choice D is incorrect as SGA babies typically appear thin with a scaphoid abdomen, not plumpy.

Correct Answer: C

Rationale: Certainly! The correct answer is C: Hyperthermia neonatorum. Greatly reduced eliminations and a red rosy appearance of the face are indicative of hyperthermia, which is an elevated body temperature. This condition can lead to dehydration and other complications. A: Hypothermia neonatorum is characterized by low body temperature, not elevated. B: Hypoglycemia neonatorum refers to low blood sugar levels, not related to the symptoms mentioned. D: Hypocalcemia neonatorum is a deficiency of calcium in the blood, not associated with the given features. In summary, hyperthermia neonatorum is the correct answer due to the specific symptoms presented, while the other choices do not align with the described features.

Correct Answer: B

Rationale: The correct answer is B: Within the first week of birth. Classical vitamin K deficiency bleeding typically occurs within the first week of birth due to low levels of vitamin K in newborns. During this time, infants are at a higher risk of bleeding complications if not supplemented with vitamin K. Choice A is incorrect because bleeding usually occurs after the first 24 hours. Choice C is incorrect as it does not specify a specific time frame within the neonatal stage. Choice D is incorrect as classical vitamin K deficiency bleeding is typically seen within the first week, not necessarily during the entire infancy stage.

Correct Answer: C

Rationale: The correct answer is C: Multiple gestation. Preterm birth is more common in multiple gestation pregnancies due to the increased strain on the mother's uterus and cervix. This can lead to early labor and delivery. Social habits (choice A) and genetic factors (choice B) may play a role in preterm birth but are not highly associated. Chronic conditions (choice D) can also contribute to preterm birth, but multiple gestation is a stronger predictor.