Leukocytosis and subarachnoid hemorrhage

Area of Science:

• Neurology
• Hematology
• Critical Care Medicine

Background:

• Spontaneous subarachnoid hemorrhage (SAH) is a critical neurological emergency.
• The prognostic significance of early inflammatory markers, such as white blood cell (WBC) count, in SAH requires further elucidation.

Purpose of the Study:

• To investigate the correlation between admission white blood cell count and clinical severity and outcomes in patients with spontaneous subarachnoid hemorrhage.

Main Methods:

• Retrospective analysis of patients admitted with spontaneous subarachnoid hemorrhage.
• Assessment of white blood cell counts at the time of admission.
• Correlation analysis with clinical grade (e.g., Hunt and Hess scale) and patient mortality.

Main Results:

• A nearly normal white blood cell count showed minimal correlation with admission clinical grade or patient outcome.
• White blood cell counts exceeding 20,000 cells/µL were significantly associated with a poor clinical grade on admission.
• Elevated white blood cell counts (over 20,000) were linked to a 50% mortality rate in this patient cohort.

Conclusions:

• Admission white blood cell count is a potential prognostic indicator in spontaneous subarachnoid hemorrhage.
• Markedly elevated white blood cell counts may signify a more severe presentation and poorer prognosis.
• Further research could explore the underlying mechanisms linking high WBC counts to SAH severity and mortality.