| 15D | 15 dimensional Quality of Life questionnaire |
| A2RBs | Angiotensin II receptor blokers |
| ACEi | Angiotensin-converting enzyme inhibitors |
| ADL | Activities of Daily Living |
| AQoL | Health-related Quality of Life questionnaire |
| ARDS | Acute Respiratory Distress Syndrome |
| BDI-II | Beck Depression Inventory-II |
| CES-D | Center for Epidemiologic Studies Depression Scale |
| COVID-19 | Coronavirus SARS-CoV-2 |
| CPAP | Continuous positive airway pressure |
| CRQ | Chronic Respiratory Questionnaire |
| CVD | Cardiovascular Disease |
| CVVH | Continuous Veno-Venous Hemofiltration |
| ECCO2R | Extracorporeal carbon dioxide removal |
| ECMO | Extracorporeal membrane oxygenation |
| EQ-5D | EuroQol 5 dimensions scale |
| ESS | Epworth Sleepiness Scale |
| F-SozU | Social Support questionnaire |
| FOSQ | Functional Outcomes of Sleep Questionnaire |
| FPI | Functional Performance Inventory |
| GAD-7 | General Anxiety Disorder-7 |
| HADS | Hospital Anxiety and Depression Scale |
| HIV | Human Immunodeficiency Virus |
| HTA | Health technology assessment |
| HUI | Health Utility Index Mark 2 or 3 |
| IES-R | Impact of Event Scale - Revised |
| JAKi | Janus kinase inhibitors |
| MAC-S | Manual Ability Classification System |
| MODS | Multiple Organ Dysfunction Syndrome |
| NMBA | Neuromuscular blocking agents |
| PAS | Positive Affect Scale |
| PCL-C | PTSD CheckList – Civilian Version |
| PEEP | Positive end-expiratory pressure |
| PHQ-9 | Patient Health Questionnaire |
| PROMIS | Patient-Reported Outcomes Measurement Information System |
| PSQI | Pittsburgh Sleep Quality Index |
| PTSS-10 | Post traumatic stress syndrome 10 |
| PTSS-14 | Post traumatic stress syndrome 14 |
| QOL | Quality of life |
| QWB | Quality of Well-Being scale |
| RBANS | Repeatable Battery for the Assessment of Neuropsychological Status |
| RCT | Randomised controlled trial |
| SARS | Severe acute respiratory syndrome |
| SCL-90 | Self-report Symptom Checklist |
| SF-12 | Short-form 12 |
| SF-36 | Short-form 36 |
| SF-6D | Short-form 6 dimensions |
| SGRQ | Saint George’s Respiratory Questionnaire |
| SLR | Systematic literature review |
| SPPB | Short Physical Performance Battery |
| SQOLI | Spitzer's Quality of Life index |
| SSQ | Sydney Swallowing Questionnaire |
| T-MoCA | Telephone version of Montreal Cognitive Assessment test for dementia |
| UK | United Kingdom |
| USA | United States |