Correlation of Various Laboratory Parameters With Outcome in Patients Suffering From Acute Non-traumatic Subarachnoid Hemorrhage - Prospective Case Series

Plain-language summary

In this prospective study, the investigators aim to investigate the effect of the following three factors on the development of vasospasm and patient outcome: (1.) the role of anemia; (2.) the role of plasma fibrinolytic activity; (3.) the role of vitamin D. The investigators include patients admitted to the Neurosurgical Intensive Care Unit of the Clinical Center of the University of Debrecen with the diagnosis of subarachnoid hemorrhage (SAH). Patients are treated according to international guidelines. As part of the study protocol the following investigations are performed: • Hemoglobin level measurement: on the day of admission and day 3-4-7 and 14 after hemorrhage •Modified clot lysis assay (mCLA): on the day of admission and day 7 after hemorrhage •25-hydroxy vitamin-D level measurement: on the day of admission •Transcranial color-coded duplex sonography (detecting vasospasm): on daily basis. •30 day follow-up: mortality, Glasgow Outcome Scale (GOS), Karnofsky score, Barthel score •90 day follow-up: mortality, Glasgow Outcome Scale , Karnofsky score, Barthel score. Laboratory test results are correlated with (a) the development of vasospasm; (b) with 30 and 90 day outcome. Perspectives of the planned study: Considering the currently available therapeutic range for patients with SAH, results of the present study may provide a basis for designing further randomized, prospective trials to investigate the effect of treating anemia, anticoagulation and vitamin-D supplementation.

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