(Source BBC News)
Intensive care units are specialist wards set up to provide treatment and close monitoring for patients who are too seriously ill to be cared for in other parts of the hospital. They have fewer patients and more staffing to provide one-on-one care when it is needed. And they are kitted out with sophisticated monitoring equipment.
There are 500 intensive care beds at the newly-opened NHS Nightingale Hospital.
There are many different reasons why a person might need this type of care.Some patients need it for recovery after intense surgery. Others need it after severe trauma, following a road traffic accident, for example.
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