SpO2 alarm value setting:

SpO2 normal value, when braether the air SpO2 measured value ≥ 95% ~ 97%.

Hypoxemia: SpO2 <95% were deoxygenated,

SpO2 <90% for mild hypoxemia,

SpO2 <85% is severe hypoxemia.

General alarm low setting should be higher than 90%.

when the spo2 value is below 90%, should pay attention to the patient condition. 

keep close observation and check the patient monitor spo2 setting