Abstract
ALTHOUGH the relationship between haematocrit and altitude was established by Hurtado et al.1 in the Andes of Peru, none has been established between haematocrit and the age of permanent residents at different altitudes. Reviewing data collected from healthy volunteers living in Morococha, 4,540 m above sea level, we found that there was always a pronounced increase in haematocrit with age, which was surprising because of the short time between surveys. We have made haematocrit determinations with the help of healthy male subjects, aged 4 to 46 y, in Morococha, Cerro de Pasco (4,250 m above sea level) and Puno (3,800 m above sea level).
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References
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Sime, F., unpublished observations, 1971, cited in Ciba Foundation Symposium on High-Altitude Physiology: Cardiac and Respiratory Aspects, 53 (1971).
Monge, M. C., and Monge, C. C., High-Altitude Diseases (Thomas, Springfield, Illinois, 1966).
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WHITTEMBURY, J., MONGE C, C. High Altitude, Haematocrit and Age. Nature 238, 278–279 (1972). https://doi.org/10.1038/238278b0
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DOI: https://doi.org/10.1038/238278b0
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