RESUMEN
A series of one hundred severely closed head injured adult patients who were admitted to Benha University Hospitals were studied for mechanism of injury, presence of traumatic subarachnoid hemorrhage [TSAH] on initial CAT scans and clinical course. The relation ship of each of these factors then correlated with the outcome. Favourable out came was highly evident in patients sustained nonmotorvehicle related injwy then these sustamied motor veluile related injwy [93% and 39% while mortalty was [4% and 37.5 respectively]. The presence of traumatic subarachnoid hemorrhage [TSAH] on initial CAT scans has been shown to be associated with unfavourable outcome, it has been found that unfavourable outcome was 39% in survivals while mortality was 39%, but those with injury alone had 10% unfavourable outcome and mortality was 24%. The patients associated with prolonged coma had higher proportion of unfavourable outcome than those associated with short duration of coma [78% and 22% respectively]. The ultimate outcome of all the patients was 54% favourable and 18% unfavourable while mortality was 28%