Final answer:
The first-line treatment for autonomic dysreflexia is immediate removal of the triggering stimulus.
Step-by-step explanation:
The first-line treatment for autonomic dysreflexia is immediate removal of the triggering stimulus. Autonomic dysreflexia is a condition that occurs in individuals with spinal cord injuries and can lead to a potentially life-threatening emergency. The treatment involves identifying and removing the cause of the autonomic dysreflexia, such as a bladder or bowel distension, which helps to alleviate the symptoms and prevent further complications.