cpap-lib 1.0.1

Summary

cpap-lib is a managed (C#/.NET) library that allows client applications to read, explore, and analyze the data recorded by a CPAP machine. It can read the CPAP data stored on the SD Card and extract all of the waveform, event, and settings data into an easy to use data model that allows for detailed analysis of everything the CPAP machine is capable of recording.

Currently the only fully supported CPAP machine is the ResMed AirSense 10, because that is the machine I have and therefore the data files I have available to test with.

I have done some limited testing of the ResMed AirCurve 10 ASV as well, but don't have extensive sample data to test with. Other ResMed Series 10 models may be supported, and Series 11 models may also be at least partially supported.

There is also very limited "proof of concept" support for the Philips Respironics System One model 560P, but other Philips Respironics models are almost certainly not supported.

Dependencies

This library uses StagPoint.EuropeanDataFormat.Net to read the EDF files that contain the CPAP data.

SD Card Files and Folder Structure

• SD Card Files and Folder Structure
  • Example
  • Identification.tgt
  • STR.edf
  • DATALOG Folder

Example

Root Folder/
├── Identification.tgt
├── STR.edf
└── DATALOG/
    ├── 20230821/
    │   ├── 20230822_001107_EVE.edf
    │   ├── 20230822_001118_BRP.edf
    │   ├── 20230822_001119_PLD.edf
    │   ├── 20230822_001119_SAD.edf
    │   └── ...
    ├── 20230822/
    │   ├── 20230822_224916_EVE.edf
    │   ├── 20230822_224924_BRP.edf
    │   ├── 20230822_224924_PLD.edf
    │   ├── 20230822_224924_SAD.edf
    │   └── ...
    └── ...

Identification.tgt

This is a two-column text file with a number of machine-specific fields.

STR.edf

The STR.edf file is a European Data Format file that contains 81 signals representing what is essentially a vertical table of values reflecting the settings and statistics for each recorded day.

It is discussed in more detail on this page.

DATALOG Folder

Underneath the DATALOG folder is another set of folders, one for each day recorded. Each folder will be named for the day whose data is stored within.

Within each of those dated subfolders will be a set of EDF files that contain the recorded data for each session recorded on that day. <br/>These files will each have a filename that conforms to the following format: yyyyMMdd_HHmmss_[Type].edf

Data Format: STR.edf File

The STR.edf file is a European Data Format file that contains 81 signals representing what is essentially a vertical table of values reflecting the settings and statistics for each recorded day.

General Information

Event Information

Machine Settings

General Settings

CPAP Mode settings

These settings are used when the machine is operating in CPAP mode

AutoSet Settings

These settings are used when the machine is operating in AutoSet mode (see here for more information)

EPR settings

These settings are used when Expiratory Pressure Relief (EPR) is enabled.

Statistics

Fault Information