WFDB Applications Guide - PhysioNet
WFDB Applications Guide - PhysioNet
WFDB Applications Guide - PhysioNet
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HRSTATS(1) <strong>WFDB</strong> <strong>Applications</strong> <strong>Guide</strong> HRSTATS(1)<br />
NAME<br />
hrstats − collect and summarize heart rate statistics from an annotation file<br />
SYNOPSIS<br />
hrstats -r record -a annotator [ options ... ]<br />
DESCRIPTION<br />
hrstats reads the annotation file specified by record and annotator and produces a uniformly sampled and<br />
smoothed instantaneous heart rate signal, using the IPFM model as originally implemented in tach.c. In<br />
this context, heart rate (HR) is defined as ten times the number of beat-to-beat (RR) intervals (and fractional<br />
intervals) within a 6-second HR measurement window, including intervals beginning and/or ending with<br />
ectopic beats, and RR intervals are defined by the locations of consecutive beat annotations in the annotation<br />
file.<br />
The first HR window starts at the beginning of the first RR interval in the record and ends 6 seconds later.<br />
Subsequent HR windows begin at 1-second intervals following the first, i.e, they overlap by 5/6 (83.33%).<br />
HR windows that contain part or all of a very long (>3 sec) or very short (
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