Caen, JP2026-03-222026-03-221976https://andeanlibrary.org/handle/123456789/17354Summary. Platelet functions and coagulation values of High Altitude (H.A.) residents 3.600 m.) were compared to sea level values. Highlanders are characterized by: - a thrombocytosis which is an adaptatif phenomenon - a platelet hypoagregability and a stability in the level of coagulation factors which can be considered as a consequence of chronic hypoxia as well as other environmental factors mainly nutritional factors. New comers to H.A. present a platelet hyperagregabillity and an hyper coagulability which are explained as acclimatatif phenomenon perhaps of adrenergic origin.frFUNCIONES PLAQUETARIASCOAGULACIÓNAMERINDIOSALTURAArticle