evaluation of the role of hemoperfusion on mortality and morbidity in patients with severe coronavirus disease 2019 (covid- 19)

Background: cytokine storm in severe covid-19 disease is one of the leading causes of death in these patients. hemoperfusion is a method used to purify the blood from toxins and inflammatory factors. the aim of this study was to evaluate the effect of hemoperfusion on mortality and morbidity in patients with severe covid - 19 disease. methods: this was a retrospective study which performed by reviewing the files of 30 patients with severe covid-19 disease referred to sina hospital affiliated to tehran university of medical sciences in 2020. thirty patients with severe covid-19 disease and positive pcr participated in the study. all patients received routine treatment protocol for covid-19. hemoperfusion was used for 15 patients in addition to receiving routine care. the remaining 15 patients were included in the control group. patients in the hemoperfusion group underwent four sessions of hemoperfusion using continuous renal replacement therapy with continuous venovenous hemofiltration. results: the icu length of stay in the control and hemoperfusion groups was 3.40 ± 11.40 and 9.65 ± 16.33 days, respectively (p= 0.075). 8 patients died and 7 patients were discharged in the control group, but 11 patients died and 4 patients were discharged in the hemoperfusion group (p= 0.256). the respiratory rate of patients in the control and hemoperfusion groups decreased from 7.43 ± 29.40 to 4.03 ± 24.60 and from 6.11 ± 31.60 to 5.04 ± 24.46, respectively (p < 0.001). the percentage of arterial blood oxygen saturation in the control and hemoperfusion groups increased from 90.86 ± 5.61 to 93.06 30 4.30 and from 92.33 26 3.26 to 92.06 31 5.31, respectively (p= 0.456). conclusion: hemoperfusion could not prevent the mortality of patients and finally out of 15 patients, 11 patients died and 4 patients were discharged. also, no significant difference was observed between the two groups in terms of arterial blood oxygen saturation.