Participants
All adults admitted into a participating acute hospital in the ROI with COVID-19 and referred to SLT were included. Inclusion criteria were (i) confirmed COVID-19 positive based on polymerase chain reaction (PCR) test; (ii) intubated during inpatient stay as part of COVID-19 treatment; (iii) referred to SLT during hospital admission and (iv) consent obtained. Exclusion criteria were (i) age 16 years or younger (ii) unconfirmed COVID-19; (iii) no consent (iv) intubation for reasons other than COVID-19.