Abstract: A pharmaceutical composition for treating acute respiratory distress syndrome (ARDS), multiple end organ failure and survival in serious and life-threatening condition in patients with coronavirus disease 2019 (COVID-19) including (a) centhaquine; (b) antiviral therapies for SARS-CoV-2 infection (remdesivir, ivermectin, chloroquine, hydroxychloroquine, azythromicyn, tenofovir, emtricitabine, ritonavir, lopinavir, ASC09, favipiravir, danoprevir, angiotensin-converting enzyme inhibitors (ACEI), angiotensin receptor blockers (ARB), recombinant human angotensin-converting enzyme 2 (rhACE2), xiyanping, alpha-interferon, fludase (DAS181), eicosapentaenoic acid free fatty acid (EPA-FFA), nitric oxide, PUL-042, Pam2CSK4 acetate, agonists of TLR2 TLR6, and TLR9), convalescent plasma, stem cells or their exosomes, immunomodulation and cytokine-targeted therapies (itolizumab, tocilizumab, sarilumab, acalabrutinib, piclidenoson, tradipitant, CD24Fc, emapalumab, anakinra, TJ003234, BLD-2660, blood purification systems, Sp

Abstract: Methods of treating diseases and conditions wherein an improvement in cardiac output, organ perfusion, or tissue oxygenation are disclosed. The methods include treatments of diseases and conditions, such as hypovolemic shock, with an a2 adrenergic agent, like centhaquin and centhaquin citrate. The method utilizes an a2 adrenergic agent administered at low doses with a low volume of resuscitation fluid. Purified centhaquin and centhaquin citrate also are disclosed.