Orthostatic hypotension, also called postural hypotension, occurs when blood pressure drops significantly upon changing position from lying down to sitting or standing. In spinal cord injury patients, this happens because the injury disrupts the sympathetic nervous system's ability to constrict blood vessels and maintain adequate blood pressure during positional changes. Medical professionals diagnose orthostatic hypotension when systolic blood pressure drops by 20 mmHg or more, or diastolic pressure drops by 10 mmHg or more within three minutes of standing.
For individuals with spinal cord injuries at the T6 level or above, the risk of developing orthostatic hypotension increases dramatically. The autonomic nervous system, which normally responds to position changes by increasing heart rate and constricting blood vessels in the legs and abdomen, cannot function properly when spinal pathways are damaged. This results in blood pooling in the lower extremities and abdomen, reducing blood flow to the brain and causing symptoms that can range from mild lightheadedness to complete loss of consciousness.
The severity of orthostatic hypotension typically correlates with the level and completeness of the spinal cord injury. Individuals with complete cervical injuries experience the most severe symptoms, while those with incomplete or lower thoracic injuries may have milder manifestations. Understanding this connection is crucial for California personal injury claims, as the presence and severity of orthostatic hypotension directly impacts the calculation of damages, future medical needs, and overall case value.