Assessment of clinical features and renal functions in Coronavirus disease-19: A retrospective analysis of 96 patients.

Background: The most common extra pulmonary organ dysfunction in acute respiratory distress syndrome is acute kidney injury. Current data so far indicate low incidence of AKI in Covid-19 disease.

Objective: In this retrospective study, we analysed the clinical features of patients diagnosed with Covid-19 and investigated the effect of Covid-19 on kidney function.

Methods: Ninety-six patients diagnosed with Covid-19 were included in our study. Demographic features (Age, gender, co-morbidities), symptoms, thorax CT findings, Covid-19 PCR results and laboratory findings were recorded. The clinical features of the patients were analysed and kidney function values before Covid-19 diagnosis were compared with kidney function values after Covid-19 diagnosis.

Results: Most presenting symptom was fever (51%). Most accompanying co-morbidity was hypertension (56%). According to laboratory findings; ferritin, D-dimer and C-reactive protein levels were statistically significantly higher in ARDS group than severe pneumonia and pneumonia group (P = .002, P = .001 and P < .001, respectively). Also lymphocyte levels were statistically significantly lower in ARDS group than severe pneumonia and pneumonia group (P = .042). According to KDIGO criteria 3 (3.1%) patients had AKI during the hospital stay. For all patients, there was statistically significant difference between basal, 1st, 5th and 10th day BUN and SCr levels (P = .024 and P = .018, respectively). For severe pneumonia group there was statistically significant difference between basal, 1st, 5th and 10th day SCr levels (P = .045).

Conclusion: Our study demonstrated that Covid-19 can cause renal impairment both with pneumonia and ARDS. A large-scale prospective randomised studies are needed to reach final judgement about this topic.