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Table 3 Hemodynamic Regulation at Rest and During 15° HUT by diagnosisa

From: Autonomic cardiovascular control in older patients with acute infection and delirium: a pilot study of orthostatic stress responses

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
RR (breaths/min) median, range 20 (12–23) 17 (11–28)  
HR (beats/min) 68 (54–80) 66 (62–85) 70 (54–82) 66 (62–84) 2 (−1–3) −1 (− 2–6)
SBP (mmHg)b 115 (99–136) 115 (88–126) 122 (103–131) 117(86–132) 7 (− 8–13) −2 (− 7–29)
DBP (mmHg)b 69 (58–78) 65 (48–77) 70 (63–86) 68 (59–78) 4 (− 8–14) 1 (− 3–16)
MAP (mmHg)b 78 (68–96) 78 (58–92) 86 (72–104) 78 (66–92) 8 (− 8–14) 9 (− 3–22)
SI (ml/m2) 32 (23–33) 35 (28–42) 28 (23–31) 32 (26–39) −3 (− 6–0) − 4 (− 6 - -1)
CI (l/min/m2) 1.9 (1.5–2.6) 2.4 (1.8–3.5) 1.8 (1.6–2.4) 2.1 (1.6–3.2) − 0.1 (− 0.4–0.1) − 0.2 (− 0.4 - -0.1)
TPRI (mmHg/l/min/m2) 14 (10–17) 11 (7–23) 15 (11–21) 12 (8–24) 2 (−2–4) 1 (0–4)
BRS (ms/mmHg) 12 (6–36) 6 (3–53) 9 (5–55) 7 (3–43) 10 (− 1–31) 1 (− 10–10)
EDI (ml/m2) 50 (37–51) 55 (45–72) 47 (40–50) 50 (38–66) − 3 (− 7–3) − 5 (− 8–0)
  1. RR Respiratory rate, HR heart rate, SBP, DBP and MAP systolic, diastolic and mean blood pressure respectively, SI stroke index, CI cardiac index and TPRI total peripheral resistance index (Indexed values are stroke volume; cardiac output and total peripheral resistance divided by body surface area), EDI End diastolic volume index
  2. No significant differences between delirium and “controls” (Mann-Whitney tests)
  3. aValues are medians (total range) obtained from registration during sequences of four minutes at rest and tilt to 15°, and changes from rest after tilt to 15°
  4. bBP-recordings are missing in 1 patient with no delirium