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Studies that also included Lapatinib buy hospitalized TBI patients reported similar frequencies of IB as the one we reported. For example in the CRASH Trial which was the largest trial conducted among TBI patients, 56% of the patients have some type of IB and 27% presented a subarachnoid haemorrhage which

is similar to the 22% incidence reported in this study. [4] In the IMPACT study, which included 9 randomised clinical trials in TBI patients, the range of frequency Inhibitors,research,lifescience,medical for EPH and SDH was 7-20% and 20-36% respectively, which is similar to the frequency reported in our study. [16] Our results are consistent, but more precise, than those of previous studies showing that IB is associated with increased mortality. There has not been any systematic review describing the association between Inhibitors,research,lifescience,medical size of IB and prognosis in TBI but a comprehensive review has been reported in the overnight delivery guideline for the Surgical Management of Traumatic Brain Injury”. [17] In this guideline bleeding size is taken

into account to recommend surgical evacuation. However, the evidence presented in the guideline is very limited. For EDH the guideline reported only seven studies that evaluated the effect of size on outcome. The median of patients included was 74 (range: 22-200). In relation to SDH only seven studies reported on the effect of size with a median number of patients of 91 (range 23-206). Inhibitors,research,lifescience,medical For IPH seven studies were reported, with a median of 85 patients included (range Inhibitors,research,lifescience,medical 23-321). Furthermore in only a few studies mortality or disability were considered as outcomes and, many of the studies included selected samples (e.g. only surgical patients) and were retrospective analysis of one centre database. Our findings are also in

keeping with the results of previous publications showing that SDH is associated with a much larger increased in the probability Inhibitors,research,lifescience,medical of death than EDH. [17] We found that only large IB, wherever the location (EDH, SDH or IPH) are associated with worse outcome and that large IB are associated with an increased risk of death in comparison with small IB. Further studies should also evaluate the effect of size on disability using outcomes such as the Glasgow Outcome Scale. The strength Entinostat of our analysis is that it included more than 13,000 patients with traumatic brain injury and so the precision of our estimates of the risk associated with IB is high. We also adjusted for most of the relevant potential confounding variables. An important limitation of this study is that in a large proportion of patients it was not reported whether the IB was small or large. These patients, with size coded as NFS, presented intermediate risk between patients with small and large lesions. Another limitation is that we did not have information on pupil reactivity which has been shown to be an important prognostic factor.

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