Characteristic | Rest | 15° tilt | Change after 15° tilt | |||
---|---|---|---|---|---|---|
Delirium, n = 5 | No delirium, n = 9 | Delirium, n = 5 | No delirium, n = 9 | Delirium, n = 5 | No delirium, n = 9 | |
Frequency Domain Measures | ||||||
PSD RRI | 2400 | 174 | 6213† | 141 | − 202 | 13 |
(350–30,075) | (16–20,659) | (148–22,462) | (46–19,083) | (−7612–8015) | (− 1576–439) | |
LFnuRRI | 21 | 29 | 23†† | 39 | 2 | 7 |
(11–62) | (17–57) | (9–65) | (25–62) | (− 28–4) | (−14–16) | |
HFnuRRI | 79 | 71 | 77†† | 61 | −2 | −7 |
(39–89) | (43–83) | (35–91) | (38–75) | (− 4–28) | (− 16–14) | |
LFabsRRI (ms2) | 419† | 27 | 854 | 29 | −44 | 12 |
(87–11,813) | (5–5986) | (27–11,579) | (10–5943) | (−234–860) | (− 69–163) | |
HFabsRRI (ms2) | 1804 | 88 | 5267† | 39 | 1 | 4 |
(86–7371) | (8–14,150) | (87–9161) | (12–11,365) | (− 1150–7071) | (− 2785–130) | |
LF/HF ratio | 0.3 | 0.4 | 0.3† | 0.5 | 0 | 0.1 |
(0.1–1.6) | (0.2–1.3) | (0.1–1.9) | (0.3–1.4) | (− 0.7–0.3) | (− 0.5–0.8) | |
Time Domain Measures | ||||||
SDNN (ms) | 51† | 25 | 36 | 22 | −15 b | 0 |
(27–227) | (8–69) | (17–174) | (13–63) | (− 54 - -5) | (− 12–16) | |
pNN50 (%) | 11† | 1 | 9 | 2 | −1 | 0 |
(3–68) | (0–36) | (0–86) | (0–20) | (− 10–18) | (− 16–16) | |
RMSSD (ms) | 36 | 20 | 30 | 30 | −9 | 8 |
(15–151) | (7–75) | (27–33) | (19–43) | (− 120–19) | (−44–23) |