The therapeutic effect of muscle relaxants can be assessed by the client's:

• A. Blood pressure
• B. Spasticity, pain, and stiffness
• C. Blood glucose
• D. Visual acuity

Answer: (B)

Assessing how well a muscle relaxant works is based on changes in muscle tone and related symptoms. These drugs aim to reduce spasticity and muscle spasms, which often brings less pain and stiffness and makes movement easier. So the best indicator of therapeutic effect is how spasticity, pain during movement, and stiffness change with treatment—their decrease signals the medication is helping. In contrast, measures like blood pressure, blood glucose, or visual acuity reflect other body systems and don’t reliably track the benefit of muscle relaxants.