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Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
Published on: June 18, 2021
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METEOROLOGICAL VARIABLES ASSOCIATED WITH SUBARACHNOID HEMORRHAGE: A SINGLE CENTER STUDY
Ante Rotim1,2,3, Marina Raguž4,5, Domagoj Gajski1,6
1Department of Neurosurgery, Sestre milosrdnice University Hospital Center, Zagreb, Croatia.
Acta Clinica Croatica
|October 23, 2023
Summary
Weather may influence spontaneous subarachnoid hemorrhage (SAH) risk. Increased atmospheric pressure showed a weak association with SAH onset, while temperature and humidity did not correlate with SAH events.
Area of Science:
- Neurology
- Environmental Medicine
- Epidemiology
Background:
- Spontaneous subarachnoid hemorrhage (SAH) is a critical neurological event.
- Intracranial aneurysm (IA) rupture is a primary cause of SAH.
- SAH can occur independently of known risk factors, suggesting other triggers.
Purpose of the Study:
- To investigate the association between meteorological factors and acute SAH onset.
- To determine if atmospheric pressure, temperature, or humidity correlate with SAH events.
Main Methods:
- Retrospective analysis of 130 patients with non-traumatic SAH.
- Correlation of SAH onset with daily meteorological data (pressure, temperature, humidity).
- Spearman rank correlation used for statistical analysis.
Main Results:
- SAH incidence peaked in winter (January, December) and was lowest in summer.
- SAH showed a moderate positive association with daily atmospheric pressure (p<0.05).
- No significant association found between SAH onset and ambient temperature or relative humidity.
Conclusions:
- Increased atmospheric pressure may be weakly associated with a higher risk of SAH.
- Ambient temperature and humidity changes do not appear to significantly influence SAH risk.
- Further research is needed to clarify meteorological and morphological factors in IA rupture.
