There statatistically significant relationships between survival in critically ill patients with COVID-19 and comorbidies of CKD with Log-rank=35, 68, p<0, 001, HR=8, 66, 95% CI 3, 59 - 20, 85; statatistically significant relationships between survival in critically ill patients with COVID-19 and renal complications in COVID-19 with Log-rank=28, 06, p<0, 001, in which, risk of CKI with HR=2, 17, 95% CI 1, 08 - 4, 36 and risk of renal failure with HR=4, 61, 95% CI 2, 37 - 8, 98.