Laboratory COVID-19 confirmed with RT-PCR who has acute respiratory distress syndrome Severely ill patient Oxygen saturation < 93% Not responding to national protocol after 72 hours Bilateral pulmonary infiltration Signed the consent form

Laboratory COVID-19 confirmed with RT-PCR who has acute respiratory distress syndrome Severely ill patient Oxygen saturation < 93% Not responding to national protocol after 72 hours Bilateral pulmonary infiltration Signed the consent form