Mortality of spontaneous intracerebral haemorrhage patients and high serum caspase-8 concentrations.

Apoptotic changes in brain samples have been found in haematoma areas of patients with spontaneous intracerebral haemorrhage (SIH) undergoing surgical haematoma evacuation. However, circulating caspase-8 concentrations in SIH patients have not been described. Thus, we carried out this study with the aim to explore whether there is an association of circulating caspase-8 concentrations and mortality in patients with SIH. We included patients with severe and supratentorial SIH. We established that the SIH was severe if Glasgow Coma Scale (GCS) was lower than 9. Intensive Care Units from 5 Spanish hospitals carried out the recruitment of patients of this observational and prospective study. We registered serum caspase-8 levels at moment of severe SIH diagnosis and 30-day mortality. Surviving (n = 41) in respect to non-surviving SIH patients (n = 38) showed lower serum caspase-8 levels (p < 0.001). The area under the curve to estimate 30-day mortality ability by serum caspase-8 levels was 0.75 (95% CI = 0.64-86; p < 0.001). Kaplan-Meier analysis found that patients with serum caspase-8 levels > 17.8 ng/mL showed higher death risk (Hazard ratio = 3.9; 95% CI = 1.99-7.63; p < 0.001). Multiple logistic regression analysis revealed the association of serum caspase-8 concentrations (controlling for intracerebral haemorrhage score, midline shift and early haematoma evacuation) with mortality at 30 days (Odds Ratio = 1.048; 95% CI = 1.018-1.079; p = 0.002). The association of serum caspase-8 concentrations with mortality of SIH patient mortality is the main of novel findings that have been revealed in our study.

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