When might a deep tendon reflex be more than 2?

• A. Seizure patient
• B. Pregnancy
• C. On magnesium sulfate
• D. Alcohol intoxication

Answer: (A)

Deep tendon reflexes reflect the level of inhibition from higher brain centers on the spinal reflex arc. A normal reflex is about 2 on the 0–4 scale; when reflexes are greater than normal, it’s called hyperreflexia, which points to increased CNS excitation or loss of cortical inhibition—often seen with upper motor neuron involvement.

In a patient who has had a seizure, there’s heightened neural excitability and altered cortical control, which can lead to reflexes that are more than normal. That’s why a deep tendon reflex greater than 2 fits best with a seizure patient.

Magnesium sulfate depresses the nervous system and tends to reduce reflexes (hyporeflexia) rather than increase them. Alcohol intoxication similarly depresses CNS function and lowers reflexes. Pregnancy by itself doesn’t typically push reflexes above normal unless there’s a related condition like preeclampsia/eclampsia; in the usual nursing context, reflexes aren’t reliably elevated from pregnancy alone.