About: Importance: Cytokine release storm (CRS) plays pivotal role in pathophysiology and progression of COVID-19. Objective: To evaluate the outcomes of COVID-19 patients having CRS treated with Therapeutic Plasma Exchange (TPE) as compared to controls not receiving TPE. Design: Retrospective propensity score (PS) matched analysis, 1st April to 30th June 2020. Setting: Tertiary care hospital, single centre based. Participants: Using PS 1:1 matching, 90 patients were assigned 2 groups (45 receiving TPE and 45 controls). Forced matching and covariate matching was done to overcome bias between two groups. Main outcomes and measures: Primary outcome was 28 days overall survival. Secondary outcomes were duration of hospitalization, CRS resolution time and timing of PCR negativity. Results: Median age was 60 years (range 32-73 in TPE, 37-75 in non-TPE group), p= 0.325. Median symptoms duration 7 days (range 3-22 days TPE and 3-20 days non-TPE), p=0.266. Disease severity in both groups was 6.6% moderate, 44.4% severe and 49% critical. Twenty-eight-day survival was significantly superior in TPE group (91.1%) as compared to controls (61.5%), HR 0.21, 95% CI for HR 0.09-0.53, log rank 0.002. Median duration of hospitalization was significantly reduced in TPE treated group as compared to non-TPE controls 10 days and 15 days respectively (p< 0.01). CRS resolution time was also significantly reduced in TPE treated group (6 days vs. 12 days) (p< 0.001). Conclusion and Relevance: Use of TPE is associated with superior overall survival, early CRS resolution and time to discharge as compared to standard therapy for COVID-19 triggered CRS.   Goto Sponge  NotDistinct  Permalink

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  • Importance: Cytokine release storm (CRS) plays pivotal role in pathophysiology and progression of COVID-19. Objective: To evaluate the outcomes of COVID-19 patients having CRS treated with Therapeutic Plasma Exchange (TPE) as compared to controls not receiving TPE. Design: Retrospective propensity score (PS) matched analysis, 1st April to 30th June 2020. Setting: Tertiary care hospital, single centre based. Participants: Using PS 1:1 matching, 90 patients were assigned 2 groups (45 receiving TPE and 45 controls). Forced matching and covariate matching was done to overcome bias between two groups. Main outcomes and measures: Primary outcome was 28 days overall survival. Secondary outcomes were duration of hospitalization, CRS resolution time and timing of PCR negativity. Results: Median age was 60 years (range 32-73 in TPE, 37-75 in non-TPE group), p= 0.325. Median symptoms duration 7 days (range 3-22 days TPE and 3-20 days non-TPE), p=0.266. Disease severity in both groups was 6.6% moderate, 44.4% severe and 49% critical. Twenty-eight-day survival was significantly superior in TPE group (91.1%) as compared to controls (61.5%), HR 0.21, 95% CI for HR 0.09-0.53, log rank 0.002. Median duration of hospitalization was significantly reduced in TPE treated group as compared to non-TPE controls 10 days and 15 days respectively (p< 0.01). CRS resolution time was also significantly reduced in TPE treated group (6 days vs. 12 days) (p< 0.001). Conclusion and Relevance: Use of TPE is associated with superior overall survival, early CRS resolution and time to discharge as compared to standard therapy for COVID-19 triggered CRS.
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