SARS-CoV-2 is the third coronavirus to have caused severe disease in humans in the last two decades, with approximately 5% of all patients and 20% of hospitalized patients experiencing severe symptoms, necessitating intensive care. The occurrence of Cytokine Storm has been implicated in the immune-pathogenesis of severe COVID-19. This is associated with cardiac injury, precipitated by cytokine mediated imbalance of coagulation and fibrinolysis, in the lung alveoli. In the absence of proven therapeutic agents, combinations of anti-viral drugs, immune-modulators and other adjunctive therapies have been tried in different clinical settings. A total of 128 confirmed cases of severe COVID-19 admitted to BLK-MAX Super Speciality Hospital between 16th of June to 31st of July, 2020 were included in this study. The correlation of age, gender, first value (on admission) of serum IL-6 and D-dimer, and impact of Tocilizumab and Remdesivir therapy on clinical outcome (28-day mortality), was evaluated in confirmed cases of severe COVID-19. The mortality rate was highest in the age group above 70 years. The incidence of death was significantly higher in males above 50 years, when age and gender were considered together. IL-6 and D-dimer levels >70 pg/mL and > 0.5μg FEU/mL respectively, were associated with poor outcome. 85.3% of patients treated with Remdesivir showed clinical improvement. When Tocilizumab and Remdisivir were administered together, 44.0% of patients survived while 56% expired. 79.7% of patients survived while 20.3% expired when neither Tocilizumab nor Remdesivir was administered.

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Organ-specific genome diversity of replication-competent SARS-CoV-2

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Suramin, penciclovir, and anidulafungin exhibit potential in the treatment of COVID-19 via binding to nsp12 of SARS-CoV-2