Considering all measurements at different study steps (n = 45, Fig. 2), a weak correlation was found between absolute values of femoral blood flow and cardiac index (r = 0.21, p = 0.17).
Correlation between absolute values of carotid blood flow (measured by TAMEAN) and of cardiac index, n = 135 (n = 38 before PLR, 38 during passive leg raising (PLR), 38 after PLR and 21 after volume expansion = 135 in total).
Correlation between absolute values of femoral blood flow and of cardiac index, n = 45 ( n = 14 before PLR, 14 during passive leg raising (PLR), 14 after PLR and 3 after volume expansion = 45 in total).
Still considering all measurements performed at the femoral level at different study steps (n = 118, Fig. 2), a weak correlation was found between absolute values of PSV and cardiac index (r = 0.32, p < 0.01) (Additional file 1: Figure S3).
Considering all measurements at different study steps (Fig. 2), only weak correlations were found between absolute values of cardiac index and absolutes values of carotid blood flow calculated from TAMEAN (n = 135; r = 0.54, p < 0.01) (Additional file 1: Figure S2) and absolutes values of carotid PSV (n = 139; r = 0.26, p < 0.01).
For a clearer identification of the contribution of the SQ in a Ps energy, let us define the confinement energy as a difference between absolute values of energies of a Ps in a spherical QD and a free Ps: ϵ Ps Conf = ϵ g ϵ g + α N, L 2 2 r 0 2 − ϵ g 2 + 8 ϵ g n r + l + 1 2 2 − 4 ϵ g + 1 2 2. (34).
There is not a straightforward relationship between the absolute values of betweenness each year and network connectivity: both stronger, longer connections and lost connections can lead to an overall drop in betweenness centrality.
Rohering et al. [12] found a strong correlation between absolute values and changes of carotid blood flow and cardiac index.
Linear regression analysis was performed between the absolute values of COPAC and COAP and between percentage changes in COPAC and COAP.
As previously described, the correlation between the absolute values of EtCO2 and CI was not significant.
The t test in Table 10 reveals no significant difference between the absolute values of the weighted error terms in regression (7).
