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Document detailing the query protocol to download data from Wanda

query_protocol.pdf

Physiology data analysis preprocessing steps: (by Amrita Pal, 07/17/2019)

a. Artifact Rejection

1. Clean up short period of noise. Example of noise in data evident from respiration and ECG data Image Added
2. Identify long period (>30s) of missing data, look at the whole time series by using Image Added
3. For CNAP blood pressure data BP, first, do Low pass filter at 50 Hz. Transform→Digital filter->FIR→Low Pass at 50 Hz Image Added                                                                 Then select Analysis→ Hemodynamic→ ABP classifier for the BP data. This will help identify the systole and diastole easier. Image Added
4. For ECG: a. find cycle, select maximum threshold at 0.5 mV and put the qrs peak on the maximum, b. Identify missed beat. Interpolate or add missed beat manually by going through the whole ECG time series.