Arterial Blood Pressure waveform, low pass filter used or not?

[PuzhenZhou]

Hi everyone,

Thank you for clicking in for this discussion. I'm wondering if the recorded pressure signal data has already been filtered or not?

The reason I have this question is that MIMIC database collected most waveform data from Philips patient monitors, and in the User Manual for invasive blood pressure, there is the description of filter of pressure signal.

"Filter
This setting lets you apply a 12 Hz or a 40 Hz filter to the pressure signal.
• Use the 12 Hz filter when the pressure transducer is connected to the intra-arterial catheter via a fluid filled tubing system (pressure line). The 12 Hz filter reduces resonant effects that can be introduced by the tubing system.
• The 40 Hz filter should only be selected when using special pressure transducers, such as cathetertip pressure transducers, or transducers that are directly connected to the intra-arterial catheter without the need for a fluid filled tubing system."