Hemodynamic Instability of Patient With Spontaneous Subarachnoid Hemorrhage

"Serum tests for specific cardiac troponin (cTPI), neuron-specific enolase (NSE), natriuretic peptides (NT-ProBNP), S100 protein (S100B), Soluble Suppressor of Tumorigenesis-2 (sST2), and soluble urokinase plasminogen activator receptor (suPAR) tests will be performed, as well as urinary tests for epinephrine and norepinephrine. On these samples, conducted according to clinical practice, additional measurements will also be taken for glial fibrillary acidic protein (GFAP) and ubiquitin carboxy-terminal hydrolase (UCH-L1) as specific study biomarkers on blood samples.~All samples will be collected within 24 hours of admission to the Emergency Department (T0) and after 72 hours (T1). A sample at day 7 (T2) will be taken."