Loss of descending sympathetic control as a result of complete spinal cord lesions above T6 result in which of the following?
A. Orthostatic hypotension
B. Autonomic dysreflexia
C. Poor thermoregulation
D. Both A and B
E. A, B, and, C
ANS: E
Rationale: Complete spinal cord lesions above T6 cause serious abnormalities of autonomic regulation because many segments of the cord below the lesion are free from descending sympathetic control. The loss of descending sympathetic control results in orthostatic hypotension, autonomic dysreflexia, and poor thermoregulation.
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