Neurokit2 ecg_delineate detects wrong R onsets and offsets

[sanketahegde]

Hi,

I am working some MIMIC ECGs which are 10 second each and have a sampling rate of 500Hz with total 5000 data points for every lead. I applied ecg_clean followed by ecg_peaks and used the required results in ecg_delineate. Everything works decently except for R_Onsets and R_Offsets. The R_Onset is detected very near to the P peak and R_Offset is detected sometimes correct but most of the time detected before the S peaks. I am mainly trying to calculate ecg-related intervals and for PR interval I need the correct R_Onsets.

Find some examples below:

I also compared the PR interval calculated with the help of Neurokit2 against the original values from the ECG metadata and I get,
PR_interval_orig = 130 msec
PR_interval_neurokit = 52 msec

Is there a way I could overcome this problem with already available Neurokit functions or appreciate some suggestions for a workaround.

Thank you!

[welcome]

Hi 👋 Thanks for reaching out and opening your first issue here! We'll try to come back to you as soon as possible. ❤️

[YmirKhang]

I am experiencing the same issue with low-resolution single-lead ECG data. I am willing to also help out if we can identify the problem.

[stale]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.