The correlation between the severity of paroxysmal sympathetic hyperactivity and plasma catecholamine levels in patients with severe traumatic brain injury

Background There is limited literature investigating the catecholamine levels in patients with paroxysmal sympathetic hyperactivity (PSH) after traumatic brain injury (TBI). The primary objective of this study was to correlate the severity of PSH (assessed using the PSH-Assessment measure [AM]) with plasma catecholamine levels at a resting state.