A nurse is caring for a client who has suspected clonus. Which of the following actions should the nurse take to assess for this condition?

A. Use a reflex hammer: Clonus is assessed by using a reflex hammer to test deep tendon reflexes, typically at the ankle joint. Sustained rhythmic contractions following dorsiflexion of the foot confirm the presence of clonus, which often indicates upper motor neuron dysfunction. B. Administer magnesium sulfate: Magnesium sulfate is a treatment used in conditions such as preeclampsia with severe features but is not a method of assessment. Medication administration would come after clonus has been identified, not during the diagnostic step. C. Perform a Romberg test: The Romberg test assesses balance and proprioception, often used in neurological exams for cerebellar or sensory dysfunction. It does not evaluate for clonus, which specifically relates to abnormal reflex activity. D. Test the gait for symmetry: Gait assessment provides information about coordination, strength, and balance. While it may reveal neurologic impairment, it does not directly test for clonus or identify the rhythmic contractions associated with it.