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Title: The association between short-term residential black carbon concentration on blood pressure in a general population sample.

Authors: Rabito, Felicia A; Yang, Qiang; Zhang, Hao; Werthmann, Derek; Shankar, Arti; Chillrud, Steven

Published In Indoor Air, (2020 07)

Abstract: BACKGROUND: Exposure to black carbon indoors may be associated with blood pressure; however, evidence is limited to vulnerable subpopulations and highly exposed individuals. Our objective was to explore the relationship between indoor black carbon at various exposure windows on resting blood pressure in a general population sample. METHODS: Black carbon was measured in the home of 76 individuals aged 10-71 in New Orleans, Louisiana. Exposure was measured every 1 minute for up to 120 hours using an AE51 microaethalometer. Systolic blood pressure and diastolic blood pressure were measured at the conclusion of exposure monitoring. RESULTS: In adjusted models, at all exposure windows, increasing black carbon was associated with increased systolic blood pressure. The period 0-72 hours prior to blood pressure measurement showed the strongest effect; a 1 μg/m3 increase in black carbon was associated with a 7.55 mm Hg (P = .02) increase in systolic blood pressure. The relationship was stronger in participants reporting doctor-diagnosed hypertension (β = 6.47 vs β = 3.27). Black carbon was not associated with diastolic blood pressure. CONCLUSION: Increasing black carbon concentration indoors is positively associated with increasing systolic blood pressure with the most relevant exposure window being 0-72 hours prior to blood pressure measurement. Individuals with hypertension may be a more susceptible population.

PubMed ID: 32003066 Exiting the NIEHS site

MeSH Terms: Adolescent; Adult; Aged; Air Pollutants; Air Pollution/statistics & numerical data*; Blood Pressure/physiology*; Child; Environmental Exposure/statistics & numerical data*; Female; Humans; Male; Middle Aged; Particulate Matter; Soot/analysis*; Young Adult

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