Calculators

Common tools

Selected calculator

Arousal Index

Independently qualifying EEG arousals per hour of sleep.

Qualifying EEG arousals(count)Required — enter a known zero explicitly where applicable.

Total sleep time(minutes)Required — enter a known zero explicitly where applicable.

Respiratory-associated arousals (optional)(count)Spontaneous arousals (optional)(count)

Result

Complete or correct the marked inputs to calculate. Blank values are not zero.

Arousal Index = independently qualifying EEG arousals × 60 / TST minutes

Respiratory / Spontaneous Arousal Index = corresponding arousals × 60 / TST minutes

Full precision is used internally. Only displayed results are rounded, normally to one decimal place.

For training use. Follow your lab’s scoring rules and physician interpretation. Calculations use already-scored measurements, stay on this device, and do not diagnose or recommend treatment. Do not enter patient identifiers.