BP blood pressure CO cardiac output CO2 carbon dioxide ECG electrocardiogram EEG electroencephalogram EMG electromyogram EOG electrooculogram EP evoked potential Flow air flow HR heart rate Noise for stress testing O2 oxygen PLETH plethysmogram Pos body position Resp respiration SCG seismocardiogram Sound sound ST ECG ST segment level Status of patient or monitor Stim stimulus SV stroke volume Temp temperature