What ABG finding is commonly seen in status epilepticus due to lactic acid buildup?

What ABG finding is commonly seen in status epilepticus due to lactic acid buildup?

• A. Metabolic acidosis
• B. Metabolic alkalosis
• C. Respiratory acidosis
• D. Normal ABG

Answer: (A)

During a prolonged seizure, intense muscle activity drives cells into anaerobic metabolism, producing lactic acid. This excess lactic acid lowers the hydrogen ion concentration balance and consumes bicarbonate buffers, leading to metabolic acidosis. In an ABG, you’d expect a low pH with a reduced bicarbonate level. If the patient is hyperventilating in response, the PaCO2 may be lowered as the body tries to compensate; the key picture is metabolic acidosis rather than alkalosis or a primary respiratory imbalance. Normal ABG would not reflect the lactate buildup, and respiratory acidosis would show a high PaCO2 instead.

During a prolonged seizure, intense muscle activity drives cells into anaerobic metabolism, producing lactic acid. This excess lactic acid lowers the hydrogen ion concentration balance and consumes bicarbonate buffers, leading to metabolic acidosis. In an ABG, you’d expect a low pH with a reduced bicarbonate level. If the patient is hyperventilating in response, the PaCO2 may be lowered as the body tries to compensate; the key picture is metabolic acidosis rather than alkalosis or a primary respiratory imbalance. Normal ABG would not reflect the lactate buildup, and respiratory acidosis would show a high PaCO2 instead.