Can Nebulised Heparin Reduce Time to Extubation in SARS-CoV-2 (CHARTER Study) – Protocol

Author:

Dixon Barry,Smith Roger J,Artigas Antonio,Laffey John,McNicholas Bairbre,Schmidt Eric,Nunes QuentinORCID,Skidmore MarkORCID,Lima Marcelo Andrade de,Moran John L,VanHaren Frank,Doig Gordon,Ghosh Angajendra,Said Simone,Gupta Sachin,Santamaria John D

Abstract

AbstractIntroductionCOVID-19 is associated with the development of ARDS displaying the typical features of diffuse alveolar damage with extensive pulmonary coagulation activation resulting in fibrin deposition in the microvasculature and formation of hyaline membranes in the air sacs. The anti-coagulant actions of nebulised heparin limit fibrin deposition and progression of lung injury. Serendipitously, unfractionated heparin also inactivates the SARS-CoV-2 virus and prevents its entry into mammalian cells. Nebulisation of heparin may therefore limit both fibrin-mediated lung injury and inhibit pulmonary infection by SARS-CoV-2. For these reasons we have initiated a multi-centre international trial of nebulised heparin in patients with COVID-19.Methods and interventionMechanically ventilated patients with confirmed or strongly suspected SARS-CoV-2 infection, hypoxaemia and an acute pulmonary opacity in at least one lung quadrant on chest X-ray, will be randomised to nebulised heparin 25,000 Units every 6 hours or standard care for up to 10 days while mechanically ventilated. The primary outcome is the time to separation from invasive ventilation to day 28, where non-survivors to day 28 are treated as though not separated from invasive ventilation.Ethics and disseminationThe study protocol has been submitted to the human research and ethics committee of St Vincent’s Hospital, Melbourne, Australia. Submission is pending in other jurisdictions. Results of this study will be published in scientific journals and presented at scientific meetings.Trial RegistrationACTRN: 12620000517976

Publisher

Cold Spring Harbor Laboratory

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