Chemoreflex ventilatory response to CO₂ in man at low and high altitudes

Abstract. On man, a peripheral chemoreflex ventilatory response curve was obtained by measuring ventilatory reactions to the transient inhalation of a CO₂-rich mixture. Experiments have been performed. 1) on lowlanders in normoxia, in acute hypoxia and during acclimatization at an altitude of 3660 m (La Paz, Bolivia). 2) on native highlanders. In lowlanders, acute and chronic hypoxia is characterized by an increase in the slope of the VE/PAco₂ curve. Acclimatization is marked by a shift of this curve to a lower PAco₂ and a higher ventilation. This shift is achieved within two days. Highland natives at high or low altitude have a very low peripheral chomoreflex CO₂ drive.

Bibliographic Details

Main Authors:	Lefrançois, R, Gautier, H, Pasquis, P, Cevaer, AM, Hellot, MF, Leroy, J
Format:	Article biblioteca
Language:	English
Published:	Respiration Physiology 1972
Subjects:	ACLIMATACIÓN, ALTURA, CONTROL RESPIRACIÓN, HIPOXIA, NATIVOS DE GRAN ALTURA,
Online Access:	http://repositorio.umsa.bo/xmlui/handle/123456789/19949
Tags:	Add Tag No Tags, Be the first to tag this record!