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Article Publish Status: FREE
Abstract Title:

Acute Effects on Blood Pressure Following Controlled Exposure to Cookstove Air Pollution in the STOVES Study.

Abstract Source:

J Am Heart Assoc. 2019 Jul 16 ;8(14):e012246. Epub 2019 Jul 9. PMID: 31286826

Abstract Author(s):

Kristen M Fedak, Nicholas Good, Ethan S Walker, John Balmes, Robert D Brook, Maggie L Clark, Tom Cole-Hunter, Robert Devlin, Christian L'Orange, Gary Luckasen, John Mehaffy, Rhiannon Shelton, Ander Wilson, John Volckens, Jennifer L Peel

Article Affiliation:

Kristen M Fedak

Abstract:

Background Exposure to air pollution from solid fuel used in residential cookstoves is considered a leading environmental risk factor for disease globally, but evidence for this relationship is largely extrapolated from literature on smoking, secondhand smoke, and ambient fine particulate matter ( PM). Methods and Results We conducted a controlled human-exposure study (STOVES [the Subclinical Tests on Volunteers Exposed to Smoke] Study) to investigate acute responses in blood pressure following exposure to air pollution emissions from cookstove technologies. Forty-eight healthy adults received 2-hour exposures to 5 cookstove treatments (three stone fire, rocket elbow, fan rocket elbow, gasifier, and liquefied petroleum gas), spanning PMconcentrations from 10 to 500 μg/m, and a filtered air control (0 μg/m). Thirty minutes after exposure, systolic pressure was lower for the three stone fire treatment (500 μg/mPM) compared with the control (-2.3 mm Hg; 95% CI, -4.5 to -0.1) and suggestively lower for the gasifier (35 μg/mPM; -1.8 mm Hg; 95% CI , -4.0 to 0.4). No differences were observed at 3 hours after exposure; however, at 24 hours after exposure, mean systolic pressure was 2 to 3 mm Hg higher for all treatments compared with control except for the rocket elbow stove. No differences were observed in diastolic pressure for any time point or treatment. Conclusions Short-term exposure to air pollution from cookstoves can elicit an increase in systolic pressure within 24 hours. This response occurred across a range of stove types and PMconcentrations, raising concern that even low-level exposures to cookstove air pollution may pose adverse cardiovascular effects.

Study Type : Human Study

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