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Table 4 Estimated values of fixed effects on left ventricular and peripheral dP/dtmax according to a linear mixed model analysis

From: Performance comparison of ventricular and arterial dP/dtmax for assessing left ventricular systolic function during different experimental loading and contractile conditions

 

LV dP/dtmax

Femoral dP/dtmax

Radial dP/dtmax

Cardiac factors

 Ees, mmHg ml−1

1674.7 (1394.9–1954.3)‡

326.2 (236.8–415.5)‡

382.9 (205.6–560.3)‡

 Ea, mmHg ml− 1

5.6 (− 116.3–127.5)

59.9 (28.2–91.6)†

− 47.5 (− 113.2–18.1)

 LV EDV, mL

1.2 (0.4–2.0)*

0.4 (0.2–0.7)†

0.7 (0.2–1.2)†

 Heart rate, bpm

21.3 (17.7–24.9)‡

3.3 (2.1–4.5)‡

8.2 (6.1–10.3)‡

Arterial factors

 TVR, dyn cm s− 5

 

− 0.1 (− 0.2 – − 0.1)‡

−0.3 (− 0.4 – − 0.2)‡

 Cart, ml mmHg− 1

 

− 69.5 (− 89.7 – − 49.3)‡

−90.9 (− 112.2 – − 69.6)‡

Preload-dependency

 SVV, %

−7.46 (− 12.52 – − 2.40)†

−6.62 (− 8.07 – − 5.18)‡

−8.42 (− 9.83 – − 7.01)‡

  1. Estimates are presented as estimated values (95% confidence interval). Estimates reflect the average change in the dependent variable per unit increase of the fixed effect
  2. LV left ventricle, Ees left ventricular end-systolic elastance, Ea effective arterial elastance, EDV end-diastolic volume, TVR total vascular resistance, Cart arterial compliance, SVV femoral pulse pressure-derived stroke volume variation, dP/dtmax peak rate of pressure
  3. *P < 0.05; †P < 0.01; ‡P < 0.001