Neonate with retrolental fibroplasia is associated with
**Core Concept**
Retrolental fibroplasia, also known as retinopathy of prematurity (ROP), is a disease of the eye affecting prematurely born babies generally having birth weight less than 1250 grams. The condition is characterized by abnormal growth of blood vessels in the retina.
**Why the Correct Answer is Right**
Retrolental fibroplasia is primarily associated with the excessive exposure of the retina to oxygen in the premature infant. This is because the retina of a premature infant is not fully developed and is more susceptible to oxidative stress. The increased oxygen levels can cause the abnormal growth of blood vessels in the retina, leading to retinopathy of prematurity. The pathophysiology involves the imbalance between the angiogenic and anti-angiogenic factors, particularly the decreased expression of vascular endothelial growth factor (VEGF) inhibitors.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while hyperglycemia is a risk factor for various complications in neonates, it is not directly associated with retrolental fibroplasia.
**Option B:** This option is incorrect because although hypercapnia can cause various neurological and cardiovascular complications, it is not directly linked to the development of retinopathy of prematurity.
**Option C:** This option is incorrect because while sepsis can cause various systemic complications in neonates, it is not directly associated with the development of retrolental fibroplasia.
**Clinical Pearl / High-Yield Fact**
Premature infants, especially those with a birth weight less than 1250 grams, are at a higher risk of developing retinopathy of prematurity due to the immaturity of their retinal vasculature and the excessive exposure to oxygen.
**Correct Answer:** D.