Renal osteodystrophy is usually due to secondary hyperparathyroidism. Of the following, the treatment incorrectly matched with the condition is

Correct Answer: A

Rationale: Renal osteodystrophy is usually due to secondary hyperparathyroidism. Alendronate sodium is used in adult osteoporosis, not renal osteodystrophy, which requires phosphate binders or vitamin D analogs.

Correct Answer: C

Rationale: Galactosemia’s renal tubular dysfunction causes a normal-anion-gap hyperchloremic metabolic acidosis due to impaired bicarbonate reabsorption, consistent with proximal tubulopathy.

Correct Answer: A

Rationale: Hyperammonemia treatment includes ammonia scavengers (B), dialysis (C, D, E), but IV glucose alone doesn’t remove ammonia, though it prevents catabolism; it’s not a primary treatment here.

Correct Answer: C

Rationale: MPS III (Sanfilippo) spares the cornea but causes retinal degeneration and can lead to papilledema from CNS involvement, unlike other MPS types with corneal clouding.

Correct Answer: A

Rationale: In Patau syndrome, midline facial defects such as cyclopia, cebocephaly, and cleft lip and palate are common, as are CNS anomalies like alobar holoprosencephaly, leading to severe disability and short life expectancy, making A incorrect as the true statement is its opposite.