Table 1.
Summary of NHS England AKI algorithm.
Fig 1.
AKI = acute kidney injury, CHI = community health index, CKD = chronic kidney disease, RIFLE = risk injury failure loss end stage kidney disease, RRT = renal replacement therapy.
Table 2.
Nephrologist clinical diagnosis groups.
Table 3.
Characteristics of the RIFLE AKI and CKD clinical diagnosis groups.
Fig 2.
Nephrologist clinical diagnosis of patients who received an AKI alert.
Fig 3.
RIFLE AKI patients detected by the NHS England AKI algorithm by clinical location.
The greatest proportion of RIFLE AKI patients identified by the NHS England algorithm was in intensive care (95.5%) and the renal unit (94.6%).
Fig 4.
RIFLE AKI patients detected by the NHS England AKI algorithm by AKI cause.
Patients could have more than one cause of AKI recorded. The algorithm identified >85% of RIFLE AKI patients across all aetiologies, although it performed least well when the cause of AKI was unknown (85.1%).
Fig 5.
Proportion of patients meeting NHS England and retrospective algorithm criteria.
The retrospective AKI algorithm detected additional RIFLE AKI patients to the NHS England algorithm without more alerts in CKD patients without AKI.
Table 4.
Patients with AKI alerts in each clinical diagnosis group.