The maximum number of organ systems supported during an AUGMENTED CARE PERIOD at any one time. This is not the total number of separate occurrences; for example, if a patient requires two episodes of mechanical ventilation during a prolonged stay in ICU, these would not be counted twice in total.

Note that only this applies to Intensive Care level and not to the High Dependency level.

The list of organ systems supported is as follows:

a.	Advanced respiratory system monitoring and support. This is indicated by one or more of the following
	i.	Mechanical ventilatory support (excluding mask continuous positive airway pressure (CPAP) or non-invasive methods, e.g. mask ventilation)
	ii.	Extracorporeal respiratory support
b.	Basic respiratory system monitoring and support. This is indicated by one or more of the following
	i.	More than 50% oxygen by fixed performance mask
	ii.	The possibility of deterioration to the point of needing advanced respiratory support
	iii.	Physiotherapy to clear secretions at least two hourly, whether via a tracheostomy, minitracheostomy, or in the absence of an artificial airway
	iv.	Patients recently extubated after a prolonged period of intubation and mechanical ventilation
	v.	Mask CPAP or non-invasive ventilation
	vi.	Patients who are intubated to protect the airway but need no ventilatory support and who are otherwise stable
c.	Circulatory system monitoring and support. This is indicated by one or more of the following
	i.	Vasoactive drugs to support arterial pressure or cardiac output
	ii.	Circulatory instability due to hypovolaemia from any cause
	iii.	Patients resuscitated following cardiac arrest where intensive care is considered clinically appropriate
	iv.	Intra-aortic balloon pumping
d.	Neurological system monitoring and support. This is indicated by one or more of the following
	i.	Central nervous system depression, from whatever cause, sufficient to prejudice the airway and protective reflexes
	ii.	Invasive neurological monitoring, e.g. intra-cranial pressure (ICP), jugular bulb sampling
e.	Renal system monitoring and support, indicated by acute renal replacement therapy (haemodialysis, haemofiltration, etc.)

The above list is the minimum criteria for the assignment of categories. 

This attribute is also known by these names:

Context	Alias
plural	NUMBER OF ORGAN SYSTEMS SUPPORTED