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The relationship between air pollutant levels and aneurysmal subarachnoid hemorrhageopen access

Authors
Kim, Jang HunLee, Sang-HoonPark, Se-HeumLim, Dong-JunPark, Dong-Hyuk
Issue Date
9-9월-2022
Publisher
LIPPINCOTT WILLIAMS & WILKINS
Keywords
aneurysm; particulate matter; pollutant; subarachnoid hemorrhage
Citation
MEDICINE, v.101, no.36, pp.E30373
Indexed
SCIE
SCOPUS
Journal Title
MEDICINE
Volume
101
Number
36
Start Page
E30373
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/143732
DOI
10.1097/MD.0000000000030373
ISSN
0025-7974
Abstract
Background: The relationship between air pollutants, including fine particles (particulate matter [PM] < 10 mu m and < 2.5 mu m), and aneurysmal subarachnoid hemorrhage (SAH) has been inadequately studied, and the results remain inconclusive. In this study, we attempted to investigate the relationship between air pollutant levels and aneurysmal SAH. Methods: Ninety-two patients diagnosed with aneurysmal SAH were retrospectively included in the study. Medical records were reviewed, and levels of pollutants, including those of sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O-3), carbon monoxide (CO), and PM with an aerodynamic diameter < 10 and 2.5 mu m (PM10 and PM2.5), were collected from the open-source Air Korea website for a period of 4 days. Independent t-tests were conducted to identify the difference in the pollutant levels between the data obtained on the day of aneurysm rupture (D-0) and the other 3 days (D-7, D-2, and D-1). Results: A majority (40.2%) of the patients experienced aneurysm rupture during the fall season when the mean daily pollutant levels were 0.004 +/- 0.001 (ppm, SO2), 0.517 +/- 0.218 (ppm, CO), 0.02056 +/- 0.012 (ppm, O-3), 0.02628 +/- 0.015 (ppm, NO2), 36.36957 +/- 24.538 (mu g/m(3), PM10), and 19.75581 +/- 13.494 (mu g/m(3), PM2.5), respectively. The level of NO2 was significantly higher on the day of aneurysm rupture (P = .035) than on the other days, while the levels of CO and O-3 were nonsignificantly higher (P = .081, P = .055, respectively) on the day of aneurysm rupture than on the other days. There was no significant differences in the PM levels between the 4 days. Conclusion: A relationship between PM levels and aneurysm rupture was not identified. Only the levels of classic air pollutant (CO, O-3, and NO2) were higher on the aneurysm rupture day than on the other days.
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