Altitude correction for hemoglobin.

摘要: OBJECTIVE To propose a correction for the hemoglobin (Hb) increase induced by altitude-associated hypoxia. DESIGN Part of national study nutrition and health preschool children (0-59 months), based on stratified, probabilistic, cluster sample. SETTING Coastal Andean regions Ecuador, comprising about 97% population, living at altitudes ranging from sea level to 3400 m. SUBJECTS Subsample 469 girls boys, 6-59 months old, with normal iron (Fe) status parameters, i.e serum ferritin > or = 10 micrograms/l, transferrin saturation 12%, zinc protoporphyrin < 2.8 micrograms/g Hb. RESULTS Exponential regression curves are adapted through Hb values children, grouped altitude ranges, data reported Hurtado in 1945 male adults. From these exponential curves, factors derived CONCLUSION The striking parallelism between hypoxia-induced young (girls boys) that adults strongly suggests proposed applicable all ages possibly both genders, least Andes.