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Bradbury, Charlotte A. M. D. PhD, Lawler, Patrick R. M. D. M. P. H.; Stanworth, Simon J. M. D.; McVerry, Bryan J. M. D.; McQuilten, Zoe PhD, Higgins, Alisa M. PhD, Mouncey, Paul R. MSc, Al-Beidh, Farah PhD, Rowan, Kathryn M. PhD, Berry, Lindsay R. PhD, Lorenzi, Elizabeth PhD, Zarychanski, Ryan M. D. MSc, Arabi, Yaseen M. M. D.; Annane, Djillali M. D. PhD, Beane, Abi PhD, van Bentum-Puijk, Wilma MSc, Bhimani, Zahra M. P. H.; Bihari, Shailesh PhD, M Bonten, Marc J. M. D. PhD, Brunkhorst, Frank M. M. D. PhD, Buzgau, Adrian MSc, Buxton, Meredith PhD, Carrier, Marc M. D. MSc, Cheng, Allen C. Mbbs PhD, Cove, Matthew Mbbs, Detry, Michelle A. PhD, Estcourt, Lise J. MBBCh PhD, Fitzgerald, Mark PhD, Girard, Timothy D. M. D. Msci, Goligher, Ewan C. M. D. PhD, Goossens, Herman PhD, Haniffa, Rashan PhD, Hills, Thomas Mbbs PhD, Huang, David T. M. D. M. P. H.; Horvat, Christopher M. M. D.; Hunt, Beverley J. M. D. PhD, Ichihara, Nao M. D. M. P. H. PhD, Lamontagne, Francois M. D.; Leavis, Helen L. M. D. PhD, Linstrum, Kelsey M. M. S.; Litton, Edward M. D. PhD, Marshall, John C. M. D.; McAuley, Daniel F. M. D.; McGlothlin, Anna PhD, McGuinness, Shay P. M. D.; Middeldorp, Saskia M. D. PhD, Montgomery, Stephanie K. MSc, Morpeth, Susan C. M. D. PhD, Murthy, Srinivas M. D.; Neal, Matthew D. M. D.; Nichol, Alistair D. M. D. PhD, Parke, Rachael L. PhD, Parker, Jane C. B. N.; Reyes, Luis F. M. D. PhD, Saito, Hiroki M. D. M. P. H.; Santos, Marlene S. M. D. Mshs, Saunders, Christina T. PhD, Serpa-Neto, Ary PhD MSc M. D.; Seymour, Christopher W. M. D. MSc, Shankar-Hari, Manu M. D. PhD, Singh, Vanessa, Tolppa, Timo Mbbs, Turgeon, Alexis F. M. D. MSc, Turner, Anne M. M. P. H.; van de Veerdonk, Frank L. M. D. PhD, Green, Cameron MSc, Lewis, Roger J. M. D. PhD, Angus, Derek C. M. D. M. P. H.; McArthur, Colin J. M. D.; Berry, Scott PhD, G Derde, Lennie P. M. D. PhD, Webb, Steve A. M. D. PhD, Gordon, Anthony C. Mbbs M. D..
JAMA ; 327(13):1247, 2022.
Article in English | ProQuest Central | ID: covidwho-1801957

ABSTRACT

Importance The efficacy of antiplatelet therapy in critically ill patients with COVID-19 is uncertain. Objective To determine whether antiplatelet therapy improves outcomes for critically ill adults with COVID-19. Design, Setting, and Participants In an ongoing adaptive platform trial (REMAP-CAP) testing multiple interventions within multiple therapeutic domains, 1557 critically ill adult patients with COVID-19 were enrolled between October 30, 2020, and June 23, 2021, from 105 sites in 8 countries and followed up for 90 days (final follow-up date: July 26, 2021). Interventions Patients were randomized to receive either open-label aspirin (n = 565), a P2Y12 inhibitor (n = 455), or no antiplatelet therapy (control;n = 529). Interventions were continued in the hospital for a maximum of 14 days and were in addition to anticoagulation thromboprophylaxis. Main Outcomes and Measures The primary end point was organ support–free days (days alive and free of intensive care unit–based respiratory or cardiovascular organ support) within 21 days, ranging from −1 for any death in hospital (censored at 90 days) to 22 for survivors with no organ support. There were 13 secondary outcomes, including survival to discharge and major bleeding to 14 days. The primary analysis was a bayesian cumulative logistic model. An odds ratio (OR) greater than 1 represented improved survival, more organ support–free days, or both. Efficacy was defined as greater than 99% posterior probability of an OR greater than 1. Futility was defined as greater than 95% posterior probability of an OR less than 1.2 vs control. Intervention equivalence was defined as greater than 90% probability that the OR (compared with each other) was between 1/1.2 and 1.2 for 2 noncontrol interventions. Results The aspirin and P2Y12 inhibitor groups met the predefined criteria for equivalence at an adaptive analysis and were statistically pooled for further analysis. Enrollment was discontinued after the prespecified criterion for futility was met for the pooled antiplatelet group compared with control. Among the 1557 critically ill patients randomized, 8 patients withdrew consent and 1549 completed the trial (median age, 57 years;521 [33.6%] female). The median for organ support–free days was 7 (IQR, −1 to 16) in both the antiplatelet and control groups (median-adjusted OR, 1.02 [95% credible interval {CrI}, 0.86-1.23];95.7% posterior probability of futility). The proportions of patients surviving to hospital discharge were 71.5% (723/1011) and 67.9% (354/521) in the antiplatelet and control groups, respectively (median-adjusted OR, 1.27 [95% CrI, 0.99-1.62];adjusted absolute difference, 5% [95% CrI, −0.2% to 9.5%];97% posterior probability of efficacy). Among survivors, the median for organ support–free days was 14 in both groups. Major bleeding occurred in 2.1% and 0.4% of patients in the antiplatelet and control groups (adjusted OR, 2.97 [95% CrI, 1.23-8.28];adjusted absolute risk increase, 0.8% [95% CrI, 0.1%-2.7%];99.4% probability of harm). Conclusions and Relevance Among critically ill patients with COVID-19, treatment with an antiplatelet agent, compared with no antiplatelet agent, had a low likelihood of providing improvement in the number of organ support–free days within 21 days.

2.
JMIR Res Protoc ; 2022 Apr 14.
Article in English | MEDLINE | ID: covidwho-1789311

ABSTRACT

BACKGROUND: Lessening Organ Dysfunction with VITamin C (LOVIT) is a blinded multicentre randomized clinical trial that compared high-dose intravenous vitamin C to placebo in patients admitted to the intensive care unit with proven or suspected infection as the main diagnosis and receiving a vasopressor. OBJECTIVE: To describe a pre-specified statistical analysis plan (SAP) for LOVIT, written prior to unblinding and locking of the trial database. METHODS: The SAP was designed by the LOVIT principal investigators and statisticians and approved by the steering committee and coinvestigators. The SAP defines the primary and secondary outcomes and describes the planned primary, secondary, and subgroup analyses. RESULTS: The SAP includes a draft participant flow diagram, tables, and planned figures. The primary outcome is a composite of mortality and persistent organ dysfunction (receipt of mechanical ventilation, vasopressors or new renal replacement therapy) at 28 days, where day 1 is the day of randomization. All analyses will use a frequentist statistical framework. The analysis of the primary outcome will estimate the risk ratio and 95% confidence interval in a generalized linear mixed model with binomial distribution and log link and considering site as a random effect. We will perform a secondary analysis adjusting for pre-specified baseline clinical variables. Subgroup analyses will include age, sex, frailty, severity of illness, Sepsis-3 definition of septic shock, baseline ascorbic acid level, and COVID-19 status. CONCLUSIONS: We have developed a SAP for the LOVIT trial and will adhere to it in the analysis phase. CLINICALTRIAL: ClinicalTrials.gov identifier: NCT03680274 (21 September 2018).

3.
JAMA ; 327(13): 1247-1259, 2022 Apr 05.
Article in English | MEDLINE | ID: covidwho-1750260

ABSTRACT

Importance: The efficacy of antiplatelet therapy in critically ill patients with COVID-19 is uncertain. Objective: To determine whether antiplatelet therapy improves outcomes for critically ill adults with COVID-19. Design, Setting, and Participants: In an ongoing adaptive platform trial (REMAP-CAP) testing multiple interventions within multiple therapeutic domains, 1557 critically ill adult patients with COVID-19 were enrolled between October 30, 2020, and June 23, 2021, from 105 sites in 8 countries and followed up for 90 days (final follow-up date: July 26, 2021). Interventions: Patients were randomized to receive either open-label aspirin (n = 565), a P2Y12 inhibitor (n = 455), or no antiplatelet therapy (control; n = 529). Interventions were continued in the hospital for a maximum of 14 days and were in addition to anticoagulation thromboprophylaxis. Main Outcomes and Measures: The primary end point was organ support-free days (days alive and free of intensive care unit-based respiratory or cardiovascular organ support) within 21 days, ranging from -1 for any death in hospital (censored at 90 days) to 22 for survivors with no organ support. There were 13 secondary outcomes, including survival to discharge and major bleeding to 14 days. The primary analysis was a bayesian cumulative logistic model. An odds ratio (OR) greater than 1 represented improved survival, more organ support-free days, or both. Efficacy was defined as greater than 99% posterior probability of an OR greater than 1. Futility was defined as greater than 95% posterior probability of an OR less than 1.2 vs control. Intervention equivalence was defined as greater than 90% probability that the OR (compared with each other) was between 1/1.2 and 1.2 for 2 noncontrol interventions. Results: The aspirin and P2Y12 inhibitor groups met the predefined criteria for equivalence at an adaptive analysis and were statistically pooled for further analysis. Enrollment was discontinued after the prespecified criterion for futility was met for the pooled antiplatelet group compared with control. Among the 1557 critically ill patients randomized, 8 patients withdrew consent and 1549 completed the trial (median age, 57 years; 521 [33.6%] female). The median for organ support-free days was 7 (IQR, -1 to 16) in both the antiplatelet and control groups (median-adjusted OR, 1.02 [95% credible interval {CrI}, 0.86-1.23]; 95.7% posterior probability of futility). The proportions of patients surviving to hospital discharge were 71.5% (723/1011) and 67.9% (354/521) in the antiplatelet and control groups, respectively (median-adjusted OR, 1.27 [95% CrI, 0.99-1.62]; adjusted absolute difference, 5% [95% CrI, -0.2% to 9.5%]; 97% posterior probability of efficacy). Among survivors, the median for organ support-free days was 14 in both groups. Major bleeding occurred in 2.1% and 0.4% of patients in the antiplatelet and control groups (adjusted OR, 2.97 [95% CrI, 1.23-8.28]; adjusted absolute risk increase, 0.8% [95% CrI, 0.1%-2.7%]; 99.4% probability of harm). Conclusions and Relevance: Among critically ill patients with COVID-19, treatment with an antiplatelet agent, compared with no antiplatelet agent, had a low likelihood of providing improvement in the number of organ support-free days within 21 days. Trial Registration: ClinicalTrials.gov Identifier: NCT02735707.


Subject(s)
COVID-19 , Venous Thromboembolism , Adult , Anticoagulants/therapeutic use , Aspirin/adverse effects , Bayes Theorem , Critical Illness/therapy , Female , Hemorrhage/chemically induced , Humans , Middle Aged , Platelet Aggregation Inhibitors/adverse effects , Respiration, Artificial , Venous Thromboembolism/drug therapy
4.
Crit Care Med ; 49(10): 1749-1756, 2021 10 01.
Article in English | MEDLINE | ID: covidwho-1475873

ABSTRACT

OBJECTIVES: Nonpharmaceutical interventions are implemented internationally to mitigate the spread of severe acute respiratory syndrome coronavirus 2 with the aim to reduce coronavirus disease 2019-related deaths and to protect the health system, particularly intensive care facilities from being overwhelmed. The aim of this study is to describe the impact of nonpharmaceutical interventions on ICU admissions of non-coronavirus disease 2019-related patients. DESIGN: Retrospective cohort study. SETTING: Analysis of all reported adult patient admissions to New Zealand ICUs during Level 3 and Level 4 lockdown restrictions from March 23, to May 13, 2020, in comparison with equivalent periods from 5 previous years (2015-2019). SUBJECTS: Twelve-thousand one-hundred ninety-two ICU admissions during the time periods of interest were identified. MEASUREMENTS: Patient data were obtained from the Australian and New Zealand Intensive Care Society Adult Patient Database, Australian and New Zealand Intensive Care Society critical care resources registry, and Statistics New Zealand. Study variables included patient baseline characteristics and ICU resource use. MAIN RESULTS: Nonpharmaceutical interventions in New Zealand were associated with a 39.1% decrease in ICU admission rates (p < 0.0001). Both elective (-44.2%) and acute (-36.5%) ICU admissions were significantly reduced when compared with the average of the previous 5 years (both p < 0.0001). ICU occupancy decreased from a mean of 64.3% (2015-2019) to 39.8% in 2020. Case mix, ICU resource use per patient, and ICU and hospital mortality remained unchanged. CONCLUSIONS: The institution of nonpharmaceutical interventions was associated with a significant decrease in elective and acute ICU admissions and ICU resource use. These findings may help hospitals and health authorities planning for surge capacities and elective surgery management in future pandemics.


Subject(s)
COVID-19/diagnosis , Hospitalization/statistics & numerical data , Intensive Care Units/statistics & numerical data , Quarantine/statistics & numerical data , Adult , Aged , COVID-19/epidemiology , Cohort Studies , Female , Humans , Intensive Care Units/organization & administration , Male , Middle Aged , New Zealand/epidemiology , Retrospective Studies
5.
Intensive Care Med ; 47(8): 867-886, 2021 Aug.
Article in English | MEDLINE | ID: covidwho-1305144

ABSTRACT

PURPOSE: To study the efficacy of lopinavir-ritonavir and hydroxychloroquine in critically ill patients with coronavirus disease 2019 (COVID-19). METHODS: Critically ill adults with COVID-19 were randomized to receive lopinavir-ritonavir, hydroxychloroquine, combination therapy of lopinavir-ritonavir and hydroxychloroquine or no antiviral therapy (control). The primary endpoint was an ordinal scale of organ support-free days. Analyses used a Bayesian cumulative logistic model and expressed treatment effects as an adjusted odds ratio (OR) where an OR > 1 is favorable. RESULTS: We randomized 694 patients to receive lopinavir-ritonavir (n = 255), hydroxychloroquine (n = 50), combination therapy (n = 27) or control (n = 362). The median organ support-free days among patients in lopinavir-ritonavir, hydroxychloroquine, and combination therapy groups was 4 (- 1 to 15), 0 (- 1 to 9) and-1 (- 1 to 7), respectively, compared to 6 (- 1 to 16) in the control group with in-hospital mortality of 88/249 (35%), 17/49 (35%), 13/26 (50%), respectively, compared to 106/353 (30%) in the control group. The three interventions decreased organ support-free days compared to control (OR [95% credible interval]: 0.73 [0.55, 0.99], 0.57 [0.35, 0.83] 0.41 [0.24, 0.72]), yielding posterior probabilities that reached the threshold futility (≥ 99.0%), and high probabilities of harm (98.0%, 99.9% and > 99.9%, respectively). The three interventions reduced hospital survival compared with control (OR [95% CrI]: 0.65 [0.45, 0.95], 0.56 [0.30, 0.89], and 0.36 [0.17, 0.73]), yielding high probabilities of harm (98.5% and 99.4% and 99.8%, respectively). CONCLUSION: Among critically ill patients with COVID-19, lopinavir-ritonavir, hydroxychloroquine, or combination therapy worsened outcomes compared to no antiviral therapy.


Subject(s)
COVID-19 , Ritonavir , Adult , Antiviral Agents/therapeutic use , Bayes Theorem , COVID-19/drug therapy , Critical Illness , Drug Combinations , Humans , Hydroxychloroquine/therapeutic use , Lopinavir/therapeutic use , Ritonavir/therapeutic use , SARS-CoV-2
6.
Ann Am Thorac Soc ; 17(7): 879-891, 2020 07.
Article in English | MEDLINE | ID: covidwho-679536

ABSTRACT

There is broad interest in improved methods to generate robust evidence regarding best practice, especially in settings where patient conditions are heterogenous and require multiple concomitant therapies. Here, we present the rationale and design of a large, international trial that combines features of adaptive platform trials with pragmatic point-of-care trials to determine best treatment strategies for patients admitted to an intensive care unit with severe community-acquired pneumonia. The trial uses a novel design, entitled "a randomized embedded multifactorial adaptive platform." The design has five key features: 1) randomization, allowing robust causal inference; 2) embedding of study procedures into routine care processes, facilitating enrollment, trial efficiency, and generalizability; 3) a multifactorial statistical model comparing multiple interventions across multiple patient subgroups; 4) response-adaptive randomization with preferential assignment to those interventions that appear most favorable; and 5) a platform structured to permit continuous, potentially perpetual enrollment beyond the evaluation of the initial treatments. The trial randomizes patients to multiple interventions within four treatment domains: antibiotics, antiviral therapy for influenza, host immunomodulation with extended macrolide therapy, and alternative corticosteroid regimens, representing 240 treatment regimens. The trial generates estimates of superiority, inferiority, and equivalence between regimens on the primary outcome of 90-day mortality, stratified by presence or absence of concomitant shock and proven or suspected influenza infection. The trial will also compare ventilatory and oxygenation strategies, and has capacity to address additional questions rapidly during pandemic respiratory infections. As of January 2020, REMAP-CAP (Randomized Embedded Multifactorial Adaptive Platform for Community-acquired Pneumonia) was approved and enrolling patients in 52 intensive care units in 13 countries on 3 continents. In February, it transitioned into pandemic mode with several design adaptations for coronavirus disease 2019. Lessons learned from the design and conduct of this trial should aid in dissemination of similar platform initiatives in other disease areas.Clinical trial registered with www.clinicaltrials.gov (NCT02735707).


Subject(s)
Community-Acquired Infections/therapy , Coronavirus Infections/therapy , Influenza, Human/therapy , Pneumonia, Viral/therapy , Pneumonia/therapy , Anti-Bacterial Agents/therapeutic use , Antiviral Agents/therapeutic use , Betacoronavirus , COVID-19 , Evidence-Based Medicine , Humans , Pandemics , Point-of-Care Systems , SARS-CoV-2
7.
N Engl J Med ; 384(16): 1491-1502, 2021 04 22.
Article in English | MEDLINE | ID: covidwho-1101727

ABSTRACT

BACKGROUND: The efficacy of interleukin-6 receptor antagonists in critically ill patients with coronavirus disease 2019 (Covid-19) is unclear. METHODS: We evaluated tocilizumab and sarilumab in an ongoing international, multifactorial, adaptive platform trial. Adult patients with Covid-19, within 24 hours after starting organ support in the intensive care unit (ICU), were randomly assigned to receive tocilizumab (8 mg per kilogram of body weight), sarilumab (400 mg), or standard care (control). The primary outcome was respiratory and cardiovascular organ support-free days, on an ordinal scale combining in-hospital death (assigned a value of -1) and days free of organ support to day 21. The trial uses a Bayesian statistical model with predefined criteria for superiority, efficacy, equivalence, or futility. An odds ratio greater than 1 represented improved survival, more organ support-free days, or both. RESULTS: Both tocilizumab and sarilumab met the predefined criteria for efficacy. At that time, 353 patients had been assigned to tocilizumab, 48 to sarilumab, and 402 to control. The median number of organ support-free days was 10 (interquartile range, -1 to 16) in the tocilizumab group, 11 (interquartile range, 0 to 16) in the sarilumab group, and 0 (interquartile range, -1 to 15) in the control group. The median adjusted cumulative odds ratios were 1.64 (95% credible interval, 1.25 to 2.14) for tocilizumab and 1.76 (95% credible interval, 1.17 to 2.91) for sarilumab as compared with control, yielding posterior probabilities of superiority to control of more than 99.9% and of 99.5%, respectively. An analysis of 90-day survival showed improved survival in the pooled interleukin-6 receptor antagonist groups, yielding a hazard ratio for the comparison with the control group of 1.61 (95% credible interval, 1.25 to 2.08) and a posterior probability of superiority of more than 99.9%. All secondary analyses supported efficacy of these interleukin-6 receptor antagonists. CONCLUSIONS: In critically ill patients with Covid-19 receiving organ support in ICUs, treatment with the interleukin-6 receptor antagonists tocilizumab and sarilumab improved outcomes, including survival. (REMAP-CAP ClinicalTrials.gov number, NCT02735707.).


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , COVID-19/drug therapy , Receptors, Interleukin-6/antagonists & inhibitors , Adult , Aged , Antibodies, Monoclonal, Humanized/adverse effects , COVID-19/complications , COVID-19/mortality , COVID-19/therapy , Critical Illness , Female , Hospital Mortality , Humans , Intensive Care Units , Male , Middle Aged , Odds Ratio , Respiration, Artificial
8.
JAMA ; 324(13): 1317-1329, 2020 10 06.
Article in English | MEDLINE | ID: covidwho-739603

ABSTRACT

Importance: Evidence regarding corticosteroid use for severe coronavirus disease 2019 (COVID-19) is limited. Objective: To determine whether hydrocortisone improves outcome for patients with severe COVID-19. Design, Setting, and Participants: An ongoing adaptive platform trial testing multiple interventions within multiple therapeutic domains, for example, antiviral agents, corticosteroids, or immunoglobulin. Between March 9 and June 17, 2020, 614 adult patients with suspected or confirmed COVID-19 were enrolled and randomized within at least 1 domain following admission to an intensive care unit (ICU) for respiratory or cardiovascular organ support at 121 sites in 8 countries. Of these, 403 were randomized to open-label interventions within the corticosteroid domain. The domain was halted after results from another trial were released. Follow-up ended August 12, 2020. Interventions: The corticosteroid domain randomized participants to a fixed 7-day course of intravenous hydrocortisone (50 mg or 100 mg every 6 hours) (n = 143), a shock-dependent course (50 mg every 6 hours when shock was clinically evident) (n = 152), or no hydrocortisone (n = 108). Main Outcomes and Measures: The primary end point was organ support-free days (days alive and free of ICU-based respiratory or cardiovascular support) within 21 days, where patients who died were assigned -1 day. The primary analysis was a bayesian cumulative logistic model that included all patients enrolled with severe COVID-19, adjusting for age, sex, site, region, time, assignment to interventions within other domains, and domain and intervention eligibility. Superiority was defined as the posterior probability of an odds ratio greater than 1 (threshold for trial conclusion of superiority >99%). Results: After excluding 19 participants who withdrew consent, there were 384 patients (mean age, 60 years; 29% female) randomized to the fixed-dose (n = 137), shock-dependent (n = 146), and no (n = 101) hydrocortisone groups; 379 (99%) completed the study and were included in the analysis. The mean age for the 3 groups ranged between 59.5 and 60.4 years; most patients were male (range, 70.6%-71.5%); mean body mass index ranged between 29.7 and 30.9; and patients receiving mechanical ventilation ranged between 50.0% and 63.5%. For the fixed-dose, shock-dependent, and no hydrocortisone groups, respectively, the median organ support-free days were 0 (IQR, -1 to 15), 0 (IQR, -1 to 13), and 0 (-1 to 11) days (composed of 30%, 26%, and 33% mortality rates and 11.5, 9.5, and 6 median organ support-free days among survivors). The median adjusted odds ratio and bayesian probability of superiority were 1.43 (95% credible interval, 0.91-2.27) and 93% for fixed-dose hydrocortisone, respectively, and were 1.22 (95% credible interval, 0.76-1.94) and 80% for shock-dependent hydrocortisone compared with no hydrocortisone. Serious adverse events were reported in 4 (3%), 5 (3%), and 1 (1%) patients in the fixed-dose, shock-dependent, and no hydrocortisone groups, respectively. Conclusions and Relevance: Among patients with severe COVID-19, treatment with a 7-day fixed-dose course of hydrocortisone or shock-dependent dosing of hydrocortisone, compared with no hydrocortisone, resulted in 93% and 80% probabilities of superiority with regard to the odds of improvement in organ support-free days within 21 days. However, the trial was stopped early and no treatment strategy met prespecified criteria for statistical superiority, precluding definitive conclusions. Trial Registration: ClinicalTrials.gov Identifier: NCT02735707.


Subject(s)
Anti-Inflammatory Agents/administration & dosage , Coronavirus Infections/drug therapy , Hydrocortisone/administration & dosage , Pneumonia, Viral/drug therapy , Respiration, Artificial/statistics & numerical data , Adrenal Cortex Hormones/therapeutic use , Adult , Anti-Inflammatory Agents/adverse effects , Betacoronavirus , COVID-19 , Coronavirus Infections/mortality , Coronavirus Infections/therapy , Early Termination of Clinical Trials , Female , Humans , Hydrocortisone/adverse effects , Intensive Care Units , Male , Middle Aged , Pandemics , Pneumonia, Viral/mortality , Pneumonia, Viral/therapy , SARS-CoV-2 , Shock/drug therapy , Shock/etiology , Treatment Outcome
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