Fig. 7From: Prediction of acute kidney injury after cardiac surgery: model development using a Chinese electronic health record datasetGroup-based trajectory modelling of central venous pressure and perfusion flow in the discovery (A) and validation (B) sets. These variables were repeatedly measured at specific time points (T1, initial phase of cardiopulmonary bypass; T2, 20Â min after aortic cross-clamping; T3, 10Â min after aortic declamping; T4, before weaning off from cardiopulmonary bypass)Back to article page