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Table 3 Values of HRV indices for the two groups of patients

From: Effects of fluid overload on heart rate variability in chronic kidney disease patients on hemodialysis

  

L group

H group

Mann–Whitney Wilcoxon

Ld

Hd

Lnd

Hnd

One-way ANOVA

# patients

31

38

 

11

8

20

30

 

First 30′HD

        
 

SDANN (ms)

27(14,38)

13(9,17)

P = 0.001

14(10,41)

14(9,17)

29(22,38)*

13(10,17)

P = 0.002

 

VLF (ms 2 )

460(291,1052)

227(122,594)

P = 0.01

310(223,477)

124(44,300)

614(375,1123)

252(141,622)

P = 0.1

 

HF%

14.8(8.2,23.0)

25.5(11.2,39.0)

P = 0.04

23.0(7.4,35.8)

28.8(22.0,53.6)

12.1(8.3,20.6)

21.4(9.9,38.7)

P = 0.03

 

LF%

37.3(25.0,50.0)

43.0(28.6,52.3)

P = 0.4

34.3(23.9,40.7)

36.0(30.4,46.1)

43.0(28.6,52.3)

33.1(23.7,45.1)

P = 0.7

 

LF/HF

2.72(1.44,5.17)

2.81(1.72,5.78)

P = 0.1

1.55(0.83,3.11)

1.53(0.61,2.12)

2.81(1.72,5.78)

2.04(0.87,3.41)

P = 0.8

 

LZC (3,0.001)

0.88(0.85,0.94)

0.83(0.76,0.91)

P = 0.07

0.87(0.86,0.92)

0.81(0.77,0.92)

0.88(0.84,0.95)

0.84(0.74,0.91)

P = 0.6

Last 30′ HD

        
 

SDANN (ms)

17(13,27)

20(13,35)

P = 0.1

15(13,21)

12(10,16)

20(13,35)

13(9,31)

P = 0.3

 

VLF (ms 2 )

634(394,2082)

795(459,2167)

P = 0.2

504(372,671)

246(30,860)

795(459,2167)

460(202,1645)

P = 0.6

 

HF%

12.41(9.04,20.57)

11.41(8.12,19.20)

P = 0.5

16.06(9.69,26.27)

27.03(19.23,31.04)

11.41(8.12,19.20)

14.80(3.66,27.97)

P = 0.5

 

LF%

41.61(29.41,54.38)

45.55(36.21,58.68)

P = 0.07

38.34(23.62,43.83)

36.41(21.47,49.94)

45.55(36.21,58.68)

31.72(16.36,49.99)

P = 0.1

 

LF/HF

2.66(1.74,6.28)

4.09(2.37,7.51)

P = 0.09

1.86(1.59,3.50)

1.01(0.39,2.02)

4.09(2.37,7.51)

2.37(1.03,5.70)

P = 0.1

 

LZC (3,0.001)

0.91(0.86,0.95)

0.91(0.88,0.94)

P = 0.08

0.93(0.85,0.96)

0.88(0.79,0.97)

0.91(0.88,0.94)

0.87(0.76,0.92)

P = 0.2

Entire HD

        
 

SDANN (ms)

44(31,62)

28(20,42)

P = 0.002

42(30,61)§

24(21,27)

46(30,61)§

31(18,45)

P = 0.004

 

VLF (ms 2 )

675(369, 1627)

415(207,1026)

P = 0.09

417(287, 697)

266(61,580)

972(411, 1851)

452(252,1160)

P = 0.5

 

HF%

16.0(7.0,21.6)

16.9(9.5,29.1)

P = 0.3

20.9(13.5, 23.8)

23.0(19.3,33.9)

12.7(6.8,18.1)

14.7(6.9,29.1)

P = 0.1

 

LF%

37.88(23.20,53.31)

38.52(22.30,54.50)

P = 0.3

37.09(23.20,46.30)

36.99(23.20,44.85)

38.52(22.30,54.50)

30.94(21.45,47.65)

P = 0.7

 

LF/HF

3.07(1.55,5.13)

3.41(1.77,5.30)

P = 0.09

2.04(1.15,3.88)

1.18(0.56,1.99)

3.41(1.77,5.30)

2.57(0.90,4.79)

P = 0.6

 

LZC (3,0.001)

0.90(0.86,0.93)

0.86(0.78,0.92)

P = 0.1

0.90(0.88,0.91)

0.91(0.78,0.95)

0.90(0.86, 0.94)

0.85(0.78,0.91)

P = 0.3

  1. Values of SDANN, VLF, HF% and LZC estimated during the first 30 min of the HD session and for the entire HD session. The values are expressed as median (25°, 75° percentiles). Significant values are indicated in bold.
  2. L group: FOpre ≤ 2.5 L; H group: FOpre > 2.5 L; d: diabetic; nd: non diabetic.
  3. Post-hoc comparisons between the four subgroups (Ld vs Lnd, Hd vs Hnd): § P = 0.02 * P = 0.001.
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