Influence of Ectopic Beats on Heart Rate Variability Analysis

Figures

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  Figure 1. Distribution of the ectopic-free and ectopic 5 min RR segments classified by the number of ectopic beats in the NSR group. # Number of.

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  Figure 2. Distribution of the ectopic-free and ectopic 5 min RR segments classified by the number of ectopic beats in the CHF group. # Number of.

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  Figure 3. Examples of 5 min RR segments from an NSR subject: (A) 5 min RR segment without ectopic beats and (B) 5 min RR segment with premature atrial contraction (ectopic type A). The x-axes show the real-time window from the raw RR interval recordings, facilitating the readers to locate these selected 5 min RR segments.

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  Figure 4. Examples of 5 min RR segments from a CHF patient: (A) 5 min RR segment without ectopic beats and (B) 5 min RR segment with premature ventricular contraction (ectopic type: V). The x-axes show the real-time window from the raw RR interval recordings, facilitating the readers to locate these selected 5 min RR segments.

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  Figure 5. Demonstration of the changes of HRV indices before (A) and after (B) ectopic beats removal in a 5 min RR segment of subject NSR003. The corresponding HRV results were given in each sub-figure. “ectopic type: A” means premature atrial contraction.

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  Figure 6. Demonstration of the changes of HRV indices before (A) and after (B) ectopic beats removal in a 5 min RR segment of patient CHF205. The corresponding HRV results were given in each sub-figure. “ectopic type: V” means premature ventricular contraction.

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  Figure 7. Trends of CSDNN under different ectopic beat burdens, i.e., the number of ectopic beats increase from 1 to more than 10: (A) NSR group and (B) CHF group.

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  Figure 8. Trends of CLF/HF under different ectopic beat burdens, i.e., the number of ectopic beats increase from 1 to more than 10: (A) NSR group and (B) CHF group.

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  Figure 9. Trends of CSampEn under different ectopic beat burdens, i.e., the number of ectopic beats increase from 1 to more than 10: (A) NSR group and (B) CHF group.

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  Figure 10. Trends of CPt-SampEn under different ectopic beat burdens, i.e., the number of ectopic beats increase from 1 to more than 10: (A) NSR group and (B) CHF group.