Related Experiment Video
Updated: Feb 15, 2026

Author Spotlight: Network Pharmacology and Molecular Docking to Decipher the Action of Jiawei Shengjiang San Against Diabetic Kidney Disease
Published on: May 10, 2024
Improved cookstoves and their effect on carbon monoxide levels in San Lucas Tolimán, Guatemala
Katherine Lucarelli1, Kevin Wyne2, James E Svenson1
1a Department of Emergency Medicine , University of Wisconsin School of Medicine and Public Health , Madison , WI , USA.
Introduction:
Installation of ventilated cookstoves has been shown to improve 24-h carbon monoxide (CO) and particulate exposure in the Guatemalan highlands. However, a survey of villagers around San Lucas Tolimán found much higher than expected CO levels. Our purpose is to evaluate the effects of improved cookstoves on CO levels in these villagers.
Methods:
This is cross sectional observational study in six rural communities. Blood carboxyhemoglobin (SpCO) was measured at three different times during the day. Stove type and location, as well as any respiratory, eye, or general symptoms reported were recorded.
Results:
122 patients were included. CO levels were much higher than would be expected in a non-smoking population, with an average level of 4.6 ± 2.3 percent. There was no significant correlation in CO level and stove type or in CO level and time of day. Reported frequency of respiratory and eye symptoms (dyspnea, p = 0.03; cough, p = 0.01; burning eyes, p = 0.001; and excessive tearing, p = 0.001) did vary significantly between improved and unimproved stove groups.
Conclusion:
This study found high average SpCO levels in all villagers. This suggests that some contributor other than cookstoves may be an additional driver of individual CO exposure in this area.
More Related Videos
Related Concept Videos
The Carbon Cycle
Carbon Skeletons
Leveling Effect
Carbonation Shrinkage
The concrete's permeability is slightly reduced as calcium carbonate produced during the reaction fills its pores. Furthermore, its strength is slightly enhanced as the water released during the reaction...
High-Level and Low-Level Awareness
Carbon-dioxide Fixation

