Heart rate recorded on watch and ECG not logged in daily graph

[TacoArt]

I had a high HR (accurately) detected on my Charge 5. I used the ECG function to keep for my logs to bring to my cardiology appointment. However, when looking back on my HR logs that day the ten minutes of tachy aren't accurately logged.

There is no absence, it's just recorded lower by a substantial amount. This lapse in coordination between the app and the watch is extremely concerning. How many times has my heart rate been inaccurately recorded, not because of watch functionality, but from a syncing issue? Has anyone else experienced this and is there a solution?

[charleskn]

I didn't know the Charge 5 had an ECG, but found this video. I prefer to use an external 6 lead ECG, the Kardia 6L, which works really well.

https://www.youtube.com/watch?v=Epx5wK8sOOs

[LZeeW]

Hello @TacoArt and welcome to the Community.  Your daily heart rate graph shows an average heart rate over a five minute interval.  You can see this for yourself by doing the following.  Select a daily heart rate graph, expand it, and rotate it to landscape view.  A light touch and hold will show you the heart rate value.  Slide your finger and you will see the 06:00, 06:05, 06:10, etc.  I track a low heart rate.  When I look at a low heart rate trace, it will show something like 06:12 - 06:22.  Your high heart rate details will show something similar.  The two time periods are offset.  If your high heart rate starts and stops abruptly, can you see how the averaging will smooth things out?