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High altitude hematology quechua aymara comparisons

High altitude hematology quechua aymara comparisons

Annals of Human Biology 8(6): 573-578

Hematological studies were carried out at various altitudes between 450-4800 m on 2 separate human groups (Quechuas and Aymaras) living in South America. Changes in the hematological parameters do not develop linearly in relation to the altitude. The impact of chronic hypoxia on erythropoiesis is greater above 3000 m. The hemogram varies quantitatively and not qualitatively (mean corpuscular volume and mean Hb concentration remain constant). The hematological study reveals the greater adaptability to high altitude of the Aymaras, an adaptability characterized by an increase in red cell count and concentration and a decrease in red cell volume. The adaptative phenomena observed in the Quechuas are reversible, whereas they persist in the Aymaras when they migrate to the lowlands (450 m).

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Accession: 005568540

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PMID: 7337418

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