Table 4 Holter data of the patients and controls.

From: Serial heart rhythm complexity changes in patients with anterior wall ST segment elevation myocardial infarction

 

Controls

STEMI patients

acute stage

3rd month

6th month

12th month

Time domain analysis

Mean NN, ms

823 (746; 903)

725 (684; 838)

763 (691, 837)

789 (710; 879)

789 (697; 902)

0.012

0.156

0.602

0.562

SDNN, ms

85 (73; 107)

52 (42; 73)

84 (62; 99)

81 (66; 101)

91 (63; 125)

<0.001

0.282

0.210

0.994

pNN20, %

30.1 (18.9; 40.7)

22.3 (15.4; 38.3)

23.6 (14.8; 40.4)

21.1 (16.3; 37.9)

31.1 (12.1; 40.2)

0.268

0.277

0.266

0.718

pNN50, %

3.1 (1.6; 7.7)

2.0 (1.4; 6.8)

3.7 (1.2; 6.6)

2.9 (1.1; 6.6)

4.6 (1.8; 9.6)

0.402

0.806

0.518

0.465

Frequency domain analysis

LF

199 (123; 288)

108 (71; 260)

201 (68; 265)

147 (54; 299)

168 (90; 369)

0.020

0.343

0.128

0.688

HF

98 (51; 209)

74 (45; 148)

146 (40; 202)

96 (38; 190)

137 (74; 248)

0.349

0.692

0.440

0.638

LF/HF

1.52 (1.10; 3.36)

1.55 (1.04; 2.78)

1.42 (0.98; 2.01)

1.68 (1.24; 2.17)

1.30 (0.95; 2.14)

0.409

0.180

0.665

0.068

Detrended fractal analysis

Alpha-1

0.99 (0.85; 1.20)

0.99 (0.81; 1.10)

0.90 (0.81; 0.98)

0.98 (0.89; 1.10)

0.85 (0.780; 1.01)

0.343

0.041

0.702

0.032

Alpha-2

1.08 (1.04; 1.11)

0.98 (0.89; 1.04)

1.07 (1.01; 1.11)

1.09 (1.03; 1.13)

1.11 (1.01; 1.16)

<0.001

0.583

0.347

0.116

Multiscale entropy

Slope 1–5

0.061 (0.030; 0.084)

0.019 (−0.021; 0.049)

0.032 (−0.005; 0.060)

0.034 (−0.015; 0.054)

0.031 (−0.017; 0.057)

0.002

0.011

0.018

0.002

Area 1–5

4.54 (3.90; 4.93)

4.93 (3.54; 5.68)

3.97 (3.09; 4.36)

3.82 (3.38; 4.52)

3.98 (3.59; 4.23)

0.375

0.002

0.003

0.008

Area 6–20

19.6 (18.3; 21.3)

18.9 (17.1; 23.3)

18.3 (15.1; 19.7)

17.6 (16.1; 19.7)

17.3 (15.6; 19.0)

0.936

0.011

0.003

0.001

  1. Values are median (25th; 75th percentile). p value: the data in each stage of the STEMI group compared to the control group individually. Abbreviations: STEMI = ST segment elevation myocardial infarction; STEMI = ST segment elevation myocardial infarction; SDNN = standard deviation of normal RR intervals; NN20 = percentage of the absolute change in consecutive normal RR interval exceeds 20 ms; pNN50 = percentage of the absolute change in consecutive normal RR interval exceeds 50 ms; AUC = area under the curve; NRI = net reclassification improvement; IDI = integrated discrimination improvement; MSE = multiscale entropy; LF = low frequency; HF = high frequency.
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