Table 1.

Measured vital parameters and sample frequencies

Waveforms	Sample frequency*
ECG (using EASI lead placement)
Lead I	500 Hz
Lead II	500 Hz
Lead V	500 Hz
Respiratory waveform	125 Hz
Plethysmogram waveform	125 Hz
Numeric values
ECG heart rate	1 Hz
Respiratory rate (ECG impedance)	1 Hz
Peripheral oxygen saturation	1 Hz
Peripheral flow index	1 Hz
Plethysmogram pulse rate	1 Hz
Non-invasive blood pressure	Every 4 hours

*The samples are recorded at the maximum frequency supported by the Philips Data Export Protocol for the Philips Intellivue MP70 patient monitor.²¹