According to the Sarnat clinical staging tool for infants with hypoxic-ischemic encephalopathy, an infant who is lethargic, hypotonic, and having frequent seizures would be classified as:

• A. Stage 2
• B. Stage 1
• C. Stage 3
• D. Stage 0

Answer: (A)

In this context, the key ideas are level of consciousness, muscle tone, and presence of seizures as the infant’s brain injury evolves. Stage II represents moderate encephalopathy: the infant is lethargic or less responsive, shows hypotonia, and may have seizures. Stage I would be milder, with irritability or hyperalertness and only mild tone changes. Stage III is severe, with stupor or coma, marked flaccidity, and often absent reflexes. Since the infant is lethargic, hypotonic, and having frequent seizures—without described coma or stupor—this pattern fits Stage II.