Fig. 1
From: Influence of arterial blood gases on the renal arterial resistive index in intensive care unit
Relationship between resistivity index (RI), age measured creatinine clearance (CLCR), diastolic arterial pressure (DAP), PaCO2and SaO2. A RI and age: the relationship is significant for total population R = 0.574 (p < 0.0001*), for normal glomerular filtration rates (GFRs) (p = 0.0246*) and for decreased GFRs (p = 0.0201*) but not observed for augmented renal clearance (ARC) (p = 0.0639). B RI and measured CLCR: relationship is significant for total population R = − 0.424 (p = 0.0005*), for normal GFRs (p = 0.0399*) and for decreased GFRs (p = 0.0439*) but not observed for ARC (p = 0.4198). C RI and DAP: the relationship is significant for the total population R = − 0.368 (p = 0.0028*), normal GFRs (p = 0.0061*) but not observed for decreased GFRs (p = 0.3794) and for ARC (p = 0.9730). D RI and PCO2: the relationship is significant for the overall population R = 0.270 (p = 0.0310*) E RI and SaO2: the relationship is significant for the overall population R = − 0.284 (p = 0.0231*). *Statistically significant