1. Using exhaled carbon monoxide and carboxyhemoglobin to evaluate the effectiveness of a chimney stove model in Peru.
- Author
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Eppler AR, Fitzgerald C, Dorner SC, Aguilar-Villalobos M, Rathbun SL, Adetona O, and Naeher LP
- Subjects
- Adult, Air Pollutants analysis, Air Pollution, Indoor analysis, Biomarkers, Environmental Exposure analysis, Female, Humans, Middle Aged, Particulate Matter analysis, Peru epidemiology, Carbon Monoxide analysis, Carboxyhemoglobin analysis, Cooking methods, Exhalation, Wood
- Abstract
Background: Measurement of biological indicators of physiological change may be useful in evaluating the effectiveness of stove models, which are intended to reduce indoor smoke exposure and potential health effects., Objectives: We examined changes in exhaled carbon monoxide (CO), percentage carboxy-hemoglobin, and total hemoglobin in response to the installation of a chimney stove model by the Juntos National Program in Huayatan, Peru in 2008., Methods: Biomarkers were measured in a convenience sample comprising 35 women who met requirements for participation, and were measured before and three weeks after installation of a chimney stove. The relationships between exposure to indoor smoke and biomarker measurements were also analyzed using simple linear regression models., Results: Exhaled CO reduced from 6.71 ppm (95% CI 5.84-7.71) to 3.14 ppm (95% CI 2.77-3.66) three weeks after stove installation (P < 0.001) while % COHb reduced from 1.76% (95% CI 1.62-1.91) to 1.18% (95% CI 1.12-1.25; P < 0.001). Changes in exhaled CO and % COHb from pre- to post-chimney stove installation were not correlated with corresponding changes in exposure to CO and PM2.5 even though the exposures also reduced after stove installation., Conclusion: Exhaled CO and % COHb both showed improvement with reduction in concentration after the installation of the chimney cook stoves, indicating a positive physiological response subsequent to the intervention.
- Published
- 2013
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