Awake Prone Positioning in Moderate to Severe COVID-19

This study is a pragmatic open label randomised controlled trial. After being informed about the study and potential risks, all patients having written informed consents will be randomised into two groups. Standard care group will consist of routine clinical care, including any advice to lie in prone position as routinely recommended by participating sites. To reduce bias, the study team will make visits at a similar schedule to those to patients in the intervention group, however these visits will be confined to general advice and measurement of vital signs. Patients will receive written advice more general in nature about COVID-19 disease. For those randomized to prone position group, a special intervention team will visit patients' rooms aiming for patients to maintain the prone position for at least 8 hours a day. The team will give written and verbal advice and if necessary aid patients' positioning themselves in the prone position. The exact duration of prone sessions will be determined according to ward schedules to take account of nursing procedures, meal times and mitigation strategies. Other methods to encourage the maintenance of prone position includes phone calls to patients, carers or education of carers. Compliance with the intervention will be evaluated by observation (manual and using in-room cameras) at fixed time intervals. In a subgroup of 100 patients accelerometer/gyrometer devices will be used to measure movement and position (this will be expanded to all patients if equipment is available). Other outcome measures (SpO2, heart rate etc) will be measured using standard monitoring equipment currently used at study sites, including wearable devices.