Heart Rate Variability in Patients with Hypertension: the Effect of Metabolic Syndrome and Antihypertensive Treatment
Table 3
Comparison of HRV parameters before and after 12-month treatment, in patients with HTN stratified by concomitant MetS.
MetS[+],
Before
MetS[+],
After
Difference (MetS[+])
value
MetS[-],
Before
MetS[-],
After
Difference (MetS[-])
value
HR [L/min]
74.1
69.1
-5.0
0.023
72.3
66.5
-5.8
0.007
OSBP [mmHg]
142.1
120.1
-22.0
<0.0001
139.5
121.2
-18.3
<0.0001
ODBP [mmHg]
90.5
77.2
-13.3
<0.0001
89.3
77.6
-11.7
<0.0001
SDNN_24h [ms]
135.5
140.2
4.7
0.012
149.1
146.3
-2.8
0.665
SDNN_day [ms]
109.8
114.6
5.1
0.042
121.5
123.2
1.7
0.312
SDNN_night [ms]
90.5
95.2
4.7
0.189
94.6
96.7
2.1
0.885
rMSSD_24h [ms]
31.5
34.7
3.2
0.003
38.2
39.4
1.2
0.470
rMSSD_day [ms]
27.3
29.7
2.4
0.001
32.7
35.0
2.3
0.855
rMSSD_night [ms]
40.0
43.8
3.8
0.042
49.0
48.6
-0.4
0.112
pNN50_24h [%]
6.80
8.03
1.23
0.0002
10.79
11.42
0.69
0.665
pNN50_day [%]
4.66
5.56
0.90
0.001
7.63
8.91
1.28
0.885
pNN50_night [%]
12.65
14.29
1.64
0.051
19.28
18.13
-1.15
0.105
LF/HF_day [-]
4.50
4.02
-0.48
0.082
3.88
3.64
-0.24
0.136
LF/HF_night [-]
3.04
2.41
-0.63
0.550
2.01
1.88
-0.13
0.470
LF_day [n.u.]
70.5
67.9
-2.6
0.457
70.0
66.1
-3.9
0.136
LF_night [n.u.]
62.3
59.9
-2.4
0.403
55.8
53.7
-2.1
0.470
HF_day [n.u.]
23.0
26.1
3.1
0.082
24.1
28.4
4.3
0.074
HF_night [n.u.]
32.3
34.6
2.3
0.189
38.3
40.8
2.5
0.470
TP_day [ms2]
2.747
3.803
1.056
0.026
3.248
4.054
806
0.307
TP_night [ms2]
2.923
3.483
560
0.402
3.174
3.377
203
0.665
ODBP: office diastolic blood pressure; HF: power in the high frequency range; HR: heart rate; LF: power in the low frequency range; n.u.: normalized units; pNN50: percentage of NN50; rMSSD: square root of the mean of the sum of the squares of differences between adjacent NN intervals; OSBP: office systolic blood pressure; SDNN: standard deviation of the average of NN intervals; TP: total power of variance of all NN intervals.
