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| ECG signal quality | Example ECG signal | Score value in information block | Description |
|---|---|---|---|
| good ECG quality |
| E:1 | ECG must look like this, with such an ECG signal there are guaranteed no problems with the QRS detection |
| sufficient ECG quality |
| E:3 | This ECG quality means that the QRS detection will still recognize every QRS complex due to internal filtering, but it is already an indication that one or the other QRS complex may be overlooked here. |
| insufficient ECG quality |
| E:6 | This ECG quality means that the QRS detection is certainly "overlooked" despite the internal filtering of some QRS complexes (false negative) or disturbances of the ECG signal even as QRS detection (false positive). |
| non-physiological ECG quality |
| E: !! | With such an ECG Signal no QRS complex can be detected. This occurs, for example, when the electrodes of the ECG conduction are open. |
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As long as the ECG has a good quality, no display in online ECG appears on the overview page. In case of insufficient ECG quality, a transparent red rectangle appears on the right side of the online ECG. Depending on the number of ECG channels, either one or three colored rectangles are displayed.
| 1 channel ECG |
| In this case, one ECG channel has a insufficient on quality |
|---|---|---|
| 3 channel ECG |
| In this case the 1st ECG channel is displayed and channels 2 and 3 are of poor quality. |
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Any information block can be configured to display the ECG quality score value
| 1 channel ECG |   | The ECG channel has a quality score of 6, which means insufficient ECG quality. |
|---|---|---|
| 3 channel ECG |
| In this three-channel ECG display, the ECG channel 1 is of poor quality (score vauel of 6) and the other two channels are not physiological (score value of 20). |
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The determination of the ECG signal quality has as result a numerical value, which can be interpreted as a measure of the noise. This can be displayed as a single numerical value for each channel. The value itself is more of a technical specification and should therefore only be displayed in disputed quality cases.
| 1 channel ECG |
| The ECG channel has a quality vaue of 5.6 |
|---|---|---|
| 3 channel ECG |
| ECG channel 1 has a quality vaue of 5.6 wich is good ECG, the other channels (value around 14) are close to the unphysiological signal |
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