Frailty in chronic kidney disease: challenges in nephrology practice. A review of current literature.

Frailty is a multidimensional clinical syndrome characterised by low physical activity, reduced strength, accumulation of multi-organ deficits, decreased physiological reserve and vulnerability to stressors. Frailty pathogenesis and 'inflammageing' is augmented by uraemia, leading to a high prevalence of frailty potentially contributing to adverse outcomes in patients with advanced chronic kidney disease (CKD), including end-stage kidney disease (ESKD). The presence of frailty is a stronger predictor of CKD outcomes than estimated glomerular filtration rate and more aligned with dialysis outcomes than age. Frailty assessment should form part of routine assessment of patients with CKD and inform key medical transitions. Frailty screening and interventions in CKD/ESKD should be a research priority.