No critical care facilities | No critical care facilities on hospital site at any time, for example, cottage or private hospital |
Investigation | Need for specialist investigational facilities, for example, angiography or referral centre (imaging?) diagnostic facilities unavailable |
Absence of normal clinical expertise | Normal medical expertise not available at referral site, usually because of medical staff absence, for example, vascular surgeon on holiday |
Specialist facilities | Medical expertise or therapeutic intervention |
Repatriation | This can be local, regional, or international. Either because the patient was originally transferred from their local hospital or because they became ill at a remote site |
Non-clinical transfer | Current unavailability of an appropriately staffed critical care bed at referring site |