SpO₂ (oxygen
saturation) meas-
urement in %
Source: According to "W Windisch et al.,
S2k-Guideline: Non-invasive and Invasive
Ventilation for Treatment of Chronic Respira-
tory Failure – Update 2017; Pneumologie
2017; 71: 722–795"
82 GB/IE
Classification /
required action
Altitude-related drop in
oxygen saturation
Note: The following table provides information
on how different altitudes affect the oxygen satu-
ration and how this affects the human organism.
The following table does NOT apply to persons
with certain pre-existing conditions (e.g. asthma,
heart failure, respiratory disorders, etc.). Persons
with pre-existing conditions may already experi-
ence symptoms (e.g. hypoxia) in low altitudes.