Gima CONTEC 8000 - Page 121

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Figure 84
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RR Interval Histogram is a graphic mode which reflects the distribution of the RR interval
at a period of time (such as 1 hour, 12 hours, 24 hours). The horizontal axis expresses the
R-R interval, and the vertical axis expresses the corresponding number of heartbeats. The
shape of RR Interval Histogram intuitively reflects circumstance of HRV. When the
histogram is high and narrow, it demonstrates the value of HRV is smaller than the normal.
On the contrary, the value is larger than the normal. The RR Interval Histogram has single