Objective: To study and document the outcomes of adjuvant use of high dose intravenous immunoglobulin (IVIg) therapy in patients with severe or critical corona virus disease 2019 (COVID-19). We report in a case series of five patients who were admitted with severe and critical COVID-19 disease and were treated with adjuvant IVIG along-with the institute's standard of care (SOC) treatment.
Methods: It is a retrospective observational study. We retrospectively collected data on all patients with COVID-19 disease who were hospitalized in author’s unit. The severe and critical disease patients who received IVIg were shortlisted and are discussed.
Results: Data from 101 patients were analyzed. Of them 5 patients were treated with IVIG along with institution’s SOC. 4 patients were male and 1 was female. Except one patient (P2) all were above 60 years of age and all had one or more co morbidities with Diabetes mellitus (DM) and Hypertension (HT) present all of them. 3 patients had past history of pulmonary tuberculosis (P1, P4 and P5). P2 had chronic kidney disease (CKD) and P4 had coronary artery disease (CAD) with cardiac resynchronization therapy (CRT) device in situ. Median length of stay was 13 days and 4 of them were discharged.
Conclusions: This small case series demonstrates that administration of IVIg in patients with severe COVID-19 disease, who did not respond to usual standard of care treatment, could improve clinical outcome and reduce mortality rate. It should be especially considered in cases with severe critical COVID-19 disease along with evidence of hyper inflammation /cytokine storm. Clinical efficacy is possibly driven by its anti-cytokine effects, reduction of inflammation by inhibition of complement activation, and down-regulation of B and T cells’ functions. Among the various inflammatory markers IVIg reduced CRP and D Dimer levels. It did not show relevant effect on other inflammation markers. However, multicenter studies with large sample size are needed to substantiate these observations.
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