Related Experiment Videos
Altitude correction for hemoglobin
H Dirren1, M H Logman, D V Barclay
1Nestlé Research Centre, Nestec Ltd, Lausanne, Switzerland.
European Journal of Clinical Nutrition
|September 1, 1994
Summary
Altitude-associated hypoxia increases hemoglobin (Hb) levels. This study proposes correction factors for Hb, applicable across ages and genders in Andean regions, based on preschool children and adult data.
Area of Science:
- Altitude physiology
- Hematology
- Pediatric nutrition
Background:
- Hypoxia at high altitudes triggers an increase in hemoglobin (Hb) levels.
- Accurate Hb measurements are crucial for assessing health, especially in diverse populations.
- Existing Hb assessment methods may require adjustments for altitude-induced variations.
Purpose of the Study:
- To develop and propose correction factors for hemoglobin (Hb) levels affected by altitude-associated hypoxia.
- To validate these correction factors across different age groups and potentially both genders.
Main Methods:
- Utilized data from a national nutrition and health study of preschool children (0-59 months) in Ecuador.
- Analyzed a subsample of 469 children with normal iron status.
- Applied exponential regression to Hb values across altitude ranges (sea level to 3400 m) and historical adult data.
Main Results:
- Developed exponential regression curves for Hb values in children and adults at varying altitudes.
- Derived altitude-specific correction factors for hemoglobin (Hb).
- Observed a strong correlation between Hb increase due to hypoxia in children and male adults.
Conclusions:
- The derived Hb correction factors are suggested to be applicable for all ages and potentially both genders in high-altitude regions like the Andes.
- This research provides a method to adjust Hb measurements for accurate health assessments in populations living at high altitudes.