Increases in Heart Rate Variability Signal Improved Outcomes in Rapid Response Team Consultations: A Cohort Study
Table 2
Comparisons of heart rate variability domains between patients by vasopressor use.
No vasopressors
Vasopressors
value
VLF (ms2) (over 24 hours)
10.8 (6–15.7)
10.4 (5.3–21.7)
ns
LF (ms2) (over 24 hours)
6.3 (3.5–11.4)
8.7 (3.4–17.5)
ns
HF (ms2) (over 24 hours)
4.8 (3–8.9)
8.4 |(3.3–15.2)
ns
L/H ratio (over 24 hours)
1 (0.8–1.4)
1.1 (0.8–1.3)
ns
SDANN/ms
52.5 (35–77.7)
71 (40.7–107.7)
ns
ASDNN/ms
19 (13.5–31.2)
26 (13.2–43)
ns
rMSSD/ms
14 (10.7–24.2)
24.5 (10–35)
ns
pNN50%
0.95 (0.07–6)
5 (0.4–10.5)
ns
Mean NN/ms
648.5 (546.5–735.2)
672 (550–811.5)
ns
SDNN/ms
60 (45.5–94.5)
78.5 (48–112.7)
ns
Data are shown as mean ± standard deviations, mean (range), and median (25–75 interquartile range) as appropriate. VLF, very low frequency; LF, low frequency; L/H, low/high ratio; HF, high frequency.
