Table 2.
Comparison of macrocirculatory hemodynamic and tissue perfusion variables between 30-day survivors and 30-day non-survivors
| Variable | Overall (n = 118) | 30-day survivors (n = 74) | 30-day non-survivors (n = 44) | p value* |
|---|---|---|---|---|
| Mean SAP (mmHg) | 105 (96–114) | 106 (97–120) | 104 (91–112) | 0.024 |
| Mean MAP (mmHg) | 72 (68–79) | 74 (70–81) | 70 (65–76) | 0.010 |
| Mean CO (L/min) | 4.0 (3.3–4.8) [n = 114] | 4.3 (3.4–5.2) [n = 71] | 3.5 (3.0–4.3) [n = 43] | 0.004 |
| Mean CI (L/min/m2) | 2.2 (1.8–2.5) [n = 117] | 2.2 (1.9–2.7) [n = 73] | 2.2 (1.7–2.4) | 0.074 |
| Mean CPI (W/m2) | 0.4 (0.3–0.4) [n = 117] | 0.4 (0.3–0.5) [n = 73] | 0.3 (0.3–0.4) | 0.027 |
| Mean ScvO2 (mmHg/mL) | 71 (64–77) [n = 115] | 72 (64–77) [n = 72] | 69 (64–76) [n = 43] | 0.095 |
| Mean ∆PCO2 (mmHg) | 7.5 (5.8–9.4) [n = 114] | 7.2 (5.7–8.5) [n = 71] | 8.5 (6.5–11.7) [n = 43] | 0.034 |
| Mean ∆PCO2/C(a-v)O2 (mmHg/mL) | 1.7 (1.2–2.3) [n = 113] | 1.7 (1.1–2.1) [n = 71] | 1.9 (1.5–2.6) [n = 42] | 0.052 |
| Mean arterial lactate (mmol/L) | 2.8 (1.7–4.6) [n = 116] | 2.2 (1.5–3.3) | 4.5 (2.3–9.0) [n = 42] | < 0.0001 |
SAP: systolic arterial pressure; MAP: mean arterial pressure; CO: cardiac output; CI: cardiac index; CPI: cardiac power index; ScvO2: central venous oxygen saturation; P(v-a)CO2/C(a-v)O2 ratio: ratio of venous-arterial carbon dioxide tension difference to arterial-venous oxygen content difference (or ∆PCO2/C(a-v)O2)
Values are median (1st quartile–3rd quartile) for continuous variables and n (%) for categorical variables
*p value from Wilcoxon test for continuous variables and Fisher's exact test for categorical variables