Increased Heart Rate Variability following Elective Percutaneous Coronary Intervention in Patients with Stable Coronary Artery Disease and Preprocedural Anxiety
Table 3
Comparison of HRV before and after PCI.
Parameters
Nonanxiety (n = 20)
value
Anxiety (n = 24)
value
Pre-PCI
Post-PCI
Pre-PCI
Post-PCI
SDNN (ms), median (min-max)
26.19 (11.07–45.46)
39.60 (17.48–103.98)
<0.001
27.19 (15.87–43.16)
28.98 (12.80–59.91)
0.424
RMSSD (ms), median (min-max)
21.90 (10.02–52.40)
30.99 (10.29–59.99)
0.012
29.43 (10.81–91.96)
20.96 (8.82–135.96)
0.753
TP (ms2), median (min-max)
523.61 (178.9–1301.35)
550.05 (95.47–15092.0)
0.232
492.15 (208.1–1850.71)
594.64 (105.33–3904.3)
0.607
LF (ms2), median (min-max)
107.21 (3.66–1011.58)
101.98 (3.31–1357.97)
0.391
83.71 (6.35–1084.33)
134.02 (7.93–512.83)
0.797
HF (ms2), median (min-max)
93.91 (3.57–366.56)
130.64 (6.63–428.78)
0.167
155.40 (6.81–998.93)
83.27 (5.92–1533.92)
0.648
LF/HF, median (min-max)
1.35 (0.27–8.76)
1.62 (0.16–9.31)
0.940
1.07 (0.09–7.88)
1.28 (0.15–6.02)
0.067
SDNN = standard deviation of all normal-normal intervals; RMSSD = root mean square of the successive differences; TP = total power; LF = low frequency; HF = high frequency; LF/HF = ratio LF : HF.
