Meteorological factors affecting aneurysmal subarachnoid hemorrhage in the Philippines.

Juan Silvestre G PASCUAL; Kathleen Joy O KHU; Edroico Mari B BRILLANTE; Johnston T TE JR; Bernard Alan B RACOMA; Katrina Hannah D IGNACIO; Gerardo D LEGASPI

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Meteorological factors affecting aneurysmal subarachnoid hemorrhage in the Philippines.

Author: Juan Silvestre G. PASCUAL ¹ ; Kathleen Joy O. KHU ¹ ; Edroico Mari B. BRILLANTE ^{2
,

3} ; Johnston T. TE JR. ⁴ ; Bernard Alan B. RACOMA ⁵ ; Katrina Hannah D. IGNACIO ⁶ ; Gerardo D. LEGASPI ¹
Author Information

1. Division of Neurosurgery, Department of Neurosciences, College of Medicine an, Philippine General Hospital, University of the Philippines Manila, Manila, Metro Manila, NCR, Philippines
2. College of Science, De La Salle University, Manila, Metro Manila, NCR, Philippines
3. College of Medicine, San Beda University, Manila, Metro Manila, NCR, Philippines
4. Division of Neurosurgery, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Canada
5. Institute of Environmental Science and Meteorology, University of the Philippines Diliman, Quezon City, Metro Manila, NCR, Philippines
6. Division of Neurology, Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Canada
Publication Type:Journal Article, Original
Keywords: Tropical
MeSH: Subarachnoid Hemorrhage; Aneurysm; Meteorology; Weather
From: Philippine Journal of Surgical Specialties 2025;80(1):1-7
CountryPhilippines
Abstract: RATIONALE/OBJECTIVE
Aneurysmal subarachnoid hemorrhage (aSAH) may be associated with meteorologic factors in temperate countries. The authors aimed to investigate the relationship between meteorologic factors and aSAH admissions in the Philippines, a tropical country with two seasons: rainy and dry.
METHODS
A census review of aSAH admissions from 2015 to 2019 at a tertiary hospital was performed. Meteorologic data were collected for the same time period, and statistical analysis was performed.
RESULTS
A total of 660 patients were admitted for aSAH, 275 and 385 during the rainy and dry seasons, respectively. August and October had the greatest number of mean admissions (13.2) while February had the least (6.2). There was a moderate positive correlation between aSAH admissions and mean temperature. Negligible to weak negative correlations were seen between aSAH admissions and humidity, barometric pressure and precipitation. However, there was no correlation on regression analysis.
CONCLUSION
There were no significant differences in aSAH admissions between rainy and dry seasons. The authors found an increase in aSAH admissions during months with higher temperatures and HI, and weak to negligible negative correlations between aSAH admissions and humidity, barometric pressure, and precipitation. These findings may inform health care facilities in terms of readiness for aSAH admissions.