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Multiple Choice

Autonomic hyperreflexia syndrome is seen in patients who have suffered from which of the following?

Autonomic hyperreflexia happens when a spinal cord injury disrupts normal brain control over the nerves below the injury. Because the brain can’t regulate the reflexes below the injury, a noxious stimulus—such as a full bladder or rectal blockage—can trigger a powerful, unmodulated sympathetic surge. That can cause a sudden, dangerous rise in blood pressure, with symptoms like a pounding headache, sweating and flushing above the level of injury, and sometimes nasal congestion or blurred vision. This syndrome is classically seen after spinal injuries, especially above the T6 level, where the disrupted communication leaves the sympathetic response unopposed. It’s not typically associated with head trauma, stroke, or asthma, which do not create this disconnection. Management focuses on removing the trigger and lowering blood pressure: check for and drain a distended bladder, assess for stool impaction, loosen tight clothing, and have the patient sit up to reduce BP, with medications if the hypertension persists.

Autonomic hyperreflexia happens when a spinal cord injury disrupts normal brain control over the nerves below the injury. Because the brain can’t regulate the reflexes below the injury, a noxious stimulus—such as a full bladder or rectal blockage—can trigger a powerful, unmodulated sympathetic surge. That can cause a sudden, dangerous rise in blood pressure, with symptoms like a pounding headache, sweating and flushing above the level of injury, and sometimes nasal congestion or blurred vision. This syndrome is classically seen after spinal injuries, especially above the T6 level, where the disrupted communication leaves the sympathetic response unopposed. It’s not typically associated with head trauma, stroke, or asthma, which do not create this disconnection. Management focuses on removing the trigger and lowering blood pressure: check for and drain a distended bladder, assess for stool impaction, loosen tight clothing, and have the patient sit up to reduce BP, with medications if the hypertension persists.