Analysis of short-term heart rate and diastolic period variability using a refined fuzzy entropy method

Table 2 The time/frequency domain and entropy features of HRV

Variables	Healthy volunteers	Patients with coronary artery stenosis	p
SD (ms)	28.00 ± 12.91	25.81 ± 8.64	0.45
LF (ms²)	97.51 [66.71 185.33]	77.74 [50.93 127.13]	0.10
HF (ms²)	114.72 [52.76 169.30]	114.55 [51.64 170.06]	0.98
SampEn	1.92 ± 0.33	1.95 ± 0.35	0.79
FuzzyEn	1.49 ± 0.22	1.53 ± 0.20	0.44
rFuzzyEn	1.21 ± 0.14	1.25 ± 0.11	0.21

SD standard deviation, LF power of low-frequency band, HF power of high-frequency band, SampEn sample entropy, FuzzyEn fuzzy entropy, rFuzzyEn refined fuzzy entropy. Data are expressed as mean ± standard deviation (SD) or median [25% 75%].

ISSN: 1475-925X