Sleeping disorders in patients with end-stage renal disease and chronic kidney disease. 
About 85% of patients on maintenance hemodialysis have sleep disorders that depend on comorbidities, age, morning dialytic shift, and blood pressure.  They are ameliorated by erythropoietin, by transplantation, and by daily and nocturnal dialysis.  Some data exist on sleep disorders in CKD patients, and show that lack of a refreshing sleep is present even at early stages of the disease and may affect 82.2% of patients without any relationship to comorbidities.