Role of transcranial Doppler pulsatility index for predicting neurological deterioration in mild-to-moderate traumatic brain injury patients in intensive care unit.

Neurological deterioration occurred in 22% of patients.

A pulsatility index cutoff value of ≥1.25 yielded a sensitivity of 77% and a specificity of 80%.

On multivariate analysis, admission pulsatility index ≥1.25 independently predicted neurological deterioration (adjusted OR 4.3; 95% CI 1.7-10.8).