Which vital sign should be checked in a patient experiencing a seizure?

• A. Blood glucose
• B. Blood pressure
• C. Pulse oximetry
• D. Temperature

Answer: (A)

Checking blood glucose is the most important first step because hypoglycemia is a common, reversible cause of seizures and can be treated quickly with glucose or dextrose. Identifying a low or very high glucose level guides immediate management and can stop the seizure or prevent further complications.

Other vital signs like blood pressure, pulse oximetry, and temperature are still valuable for overall assessment and monitoring, but they don’t pinpoint a treatable metabolic trigger as directly as a glucose check does. Blood pressure helps gauge stability, oxygen saturation ensures adequate oxygenation, and temperature can indicate infection or fever, which may contribute to seizures but isn’t as immediately actionable as correcting hypoglycemia.