The correct measurement of oxygen saturation at high altitude

摘要

Background Compared to measurements at sea level, measurement of oxygen saturation by pulse oximetry (SpO(2)) at altitude differs fundamentally because of the cyclical course of SpO(2), caused by periodic breathing. Therefore, the determination of a representative SpO(2) value is difficult. In the literature, recommendations for a standardized measurement procedure are missing; different studies measure SpO(2) in different ways.