Which of the following do not manifest on first day of life?
**Core Concept**
Hypoxic-ischemic encephalopathy (HIE) and retinopathy of prematurity (ROP) are two conditions that can affect newborns. However, they have different timelines for manifestation based on the maturity of the infant and the severity of the insult.
**Why the Correct Answer is Right**
Retinopathy of prematurity (ROP) typically manifests between 28 to 40 weeks of gestation, but it usually doesn't become apparent until 31-40 weeks of gestation, which is well after the first day of life. On the other hand, HIE and other conditions like congenital abnormalities and infections can be apparent at birth or on the first day of life.
**Why Each Wrong Option is Incorrect**
**Option A:** Not enough information is provided to determine if this condition manifests on the first day of life.
**Option B:** This condition is typically apparent at birth or on the first day of life.
**Option C:** This condition can manifest on the first day of life.
**Clinical Pearl / High-Yield Fact**
ROP is a leading cause of blindness in premature infants, and its severity is directly correlated with the degree of prematurity and the presence of systemic oxygen toxicity.
**Correct Answer:** A