Related Experiment Video
Updated: Aug 7, 2026
09:46
Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization
Published on: May 19, 2019
Biomass solid fuel and acute respiratory infections: the ventilation factor
Anayo Fidelis Akunne1, Valérie R Louis, Mamadou Sanon
1Tropical Hygiene and Public Health, Medical School, University of Heidelberg, Germany. Anayo.Akunne@urz.uni-heidelberg.de
Summary
Biomass smoke exposure significantly contributes to acute respiratory infections (ARI) in young children. Improving ventilation and cooking practices, especially cooking outdoors, can substantially reduce this health risk.
Area of Science:
- Environmental Health
- Pediatrics
- Public Health
Background:
- Biomass solid fuel smoke exposure is a known risk factor for acute respiratory infections (ARI).
- Increased reliance on biomass fuels is anticipated in low-income households, potentially exacerbating health impacts.
- Improved indoor ventilation is a key strategy to mitigate health risks associated with biomass smoke.
Purpose of the Study:
- To quantify the reduction in ARI attributable to biomass smoke exposure in children under 5 years old.
- To assess the impact of improved ventilation factors on reducing ARI fractions.
- To compare the effectiveness of different mitigation strategies, including cooking location and device improvements.
Main Methods:
- An explorative study involving 51 randomly selected households in Burkina Faso.
- Utilized questionnaires to gather data on household stove types, locations, and ventilation coefficients.
- Calculated attributable fractions for ARI using traditional methods and weighted exposure data.
Main Results:
- The initial attributable fraction for ARI due to biomass smoke was estimated at 0.56.
- After weighting for ventilation, stove type, and location, the attributable fraction decreased to 0.26.
- Scenario analysis indicated that cooking outdoors yielded a greater reduction in ARI fraction compared to improving indoor ventilation and cooking devices by 20%.
Conclusions:
- Enhancements in cooking devices and indoor ventilation can decrease ARI fractions in children under 5.
- Cooking outdoors presents a more effective intervention for reducing ARI attributable to biomass smoke exposure.
- Public health strategies should prioritize promoting outdoor cooking and improved ventilation in households using biomass fuels.
Related Concept Videos
01:29Acute Respiratory Failure-V
The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
Ensure that patients are monitored continuously for their response to therapy, including changes in...
01:19Factors Affecting Pulmonary Ventilation
Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
01:20Assessment of Ventilation I: Respiratory Rate
Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
01:21Acute Respiratory Failure-II
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
01:21Acute Respiratory Failure-I
Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
01:23Acute Respiratory Failure-IV
Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...