Which medication is used at home to treat autonomic dysreflexia symptoms, and how should it be administered?

• A. Procardia (nifedipine) under the tongue via bite and squeeze
• B. Amlodipine in tablet form
• C. IV nitroglycerin
• D. Catapres (clonidine) patch

Answer: (A)

Autonomic dysreflexia is a medical emergency where a stimulus below the level of the spinal injury triggers a sudden, dangerous rise in blood pressure. The priority at home is to lower that BP quickly and safely. A fast-acting, short-acting antihypertensive given by a rapid-absorption route is ideal for this acute situation. Sublingual nifedipine fits that need because placing a tablet under the tongue and biting or squeezing it helps it dissolve and be absorbed quickly, producing rapid vasodilation and a swift drop in blood pressure. This quick action makes it the best option for home use to address acute symptoms of autonomic dysreflexia.

The other approaches aren’t suited for immediate home treatment: a long-acting oral calcium channel blocker like amlodipine won’t provide rapid relief; an IV nitroglycerin infusion requires hospital monitoring and access to IV lines; and a clonidine patch is meant for slower, ongoing blood pressure control rather than an acute episode. After giving the sublingual nifedipine, reassess blood pressure after several minutes and seek urgent care if the pressure doesn’t come down or symptoms persist, while continuing to remove triggers (such as bladder distention or tight clothing) and keep the patient seated upright.