What is a key characteristic of Autonomic Dysreflexia?

A key characteristic of Autonomic Dysreflexia is systemic hypertension. This condition typically occurs in individuals with spinal cord injuries above the level of T6 and is characterized by an exaggerated autonomic response to noxious stimuli below the level of injury. When such stimuli occur—like a full bladder or bowel obstruction—the body responds with uncontrolled sympathetic nervous system activity. This results in vasoconstriction and increased peripheral vascular resistance, leading to an acute rise in blood pressure.

The systemic hypertension associated with Autonomic Dysreflexia is concerning because it can lead to serious complications, such as cerebrovascular accidents or cardiac events. It is essential for healthcare providers to recognize this condition quickly and intervene appropriately to manage blood pressure and address the underlying stimulus causing the dysreflexia.

Additional features, such as bradycardia, may occur in response to the hypertension, as the baroreceptor reflex attempts to compensate for the high blood pressure. However, the hallmark of the condition remains the significant increase in blood pressure itself, making systemic hypertension the defining characteristic.