Which of the following best describes a typical autonomic dysreflexia symptom cluster?

• A. Rapid rise in blood pressure with bradycardia
• B. Sudden drop in blood pressure with tachycardia
• C. Isolated chest pain without autonomic signs
• D. Persistent fever and rash

Answer: (A)

Autonomic dysreflexia is a dangerous reflex that occurs in people with spinal cord injuries above the T6 level. Its hallmark is a rapid, life-threatening rise in blood pressure driven by sympathetic activity below the lesion, which the parasympathetic system cannot fully counteract. The heart often slows down in response to the hypertension, yielding bradycardia. Clinically you’ll see a sudden high blood pressure with a slow pulse, often accompanied by symptoms like pounding headache, flushing above the injury, sweating, and nasal congestion. This combination of abrupt hypertension and reflex bradycardia best captures the typical symptom cluster. The other scenarios describe different conditions—hypotension with tachycardia, chest pain without autonomic signs, or fever with rash—that don’t fit autonomic dysreflexia.