Correct!
3. PSG sleep study
A study of 98,709 veterans with TBI and 98,709 age-matched veterans without TBI (age 49 ± 20 years). After an average follow-up of 5 (1-14) years, 23,127 (19.6%) veterans developed sleep disorders (1). Those with TBI had a 41% increase in sleep disorders compared to those without TBI (hazard ratio 1.41 [95% confidence interval 1.37-1.44]). The association was stronger for mild TBIs, did not differ appreciably by presence of posttraumatic stress disorder, and remained after a 2-year time lag. Therefore, a PSG sleep study seems reasonable. It is unclear how a repeat head CT scan, EEG or brain MRI would be helpful.
PSG showed mild positional OSA with an apnea-hypopnea index (AHI) of 9 events/hour and lowest oxygen saturation of 93% (using 3% hypopnea rule).
What should be done next? (Click on the correct answer to be directed to the third of five pages)