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MIT-BIT arrhythmia database follows AAMI standards. It has samples of 360 sampling frequency so it can detect heart beats of 180 Hz because of Nyquist frequency.

I have noted that this frequency cannot give good enough resolution for showing the cardiac physiology, for instance, inside QRS-complex.

My friend mentioned me about Holter 360 register, but I cannot find any discussion about it in PubMed, it is probably used only in one hospital of my country.

Is there any publicly available ECG databases with better sampling frequency than 360 Hz?

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How were you searching Pubmed? There are 30,000+ results for "Holter" and that can be refined further to include sampling frequency, etc. Also, the 12-lead EKG's are capable of 4096 Hz resolution according to this paper: plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0081281 –  leonardo Jan 10 at 22:41
    
@leonardo I am looking for review articles about holter. –  Masi Jan 10 at 23:01
    
What did you search on PubMed? If you search "holter molitor" and filter by review there are ~900 results. –  leonardo Jan 10 at 23:56
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