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J Occup Environ Med. 2018 Dec;60(12):1082-1086. doi: 10.1097/JOM.0000000000001449.

Meteorological Factors and Air Pollutants Contributing to Seasonal Variation of Acute Exacerbation of Atrial Fibrillation: A Population-Based Study.

Author information

1
Division of Cardiology, Department of Internal Medicine (Drs Ahn, Choe, Shin, Park, Lee, Oh, Choi, Lee, Cha, Hong); Biomedical Research Institute (Dr Ahn), Pusan National University Hospital; Department of Statistics, Pukyong National University (Dr Uhm); Department of Atmospheric Sciences, Pusan National University (Dr Won), Busan; Department of Statistics and Institute of Statistics, Hallym University, Chuncheon (Dr Han); and Division of Cardiology, Department of Internal Medicine, Korea University Medical Center, Seoul (Dr Kim), Republic of Korea.

Abstract

OBJECTIVE:

We investigated seasonal variation of acute exacerbation of atrial fibrillation (AAF) and contributing environmental factors.

METHODS:

AAF events, meteorological elements, and air pollutants in Seoul between 2013 and 2015 were obtained from the nationwide database. AAF was defined if a patient visited the emergency room due to any AF-relevant symptoms or signs.

RESULTS:

AAF occurred less frequently in summer than in other seasons (6.71 vs 7.25 events/d, P = 0.005). AAF tended to decrease with an increase of air temperature (r = -0.058). Among air pollutants, NO2 was significantly lower in summer and positively correlated with AAF after adjusting for other variables (β = 3.197).

CONCLUSIONS:

The rate of AAF events was the lowest in summer; air temperature and NO2 were contributing factors. The weather and environmental conditions should be considered as risk factors of AAF.

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