I.-The 4° adult critical care authorisation may only be granted if the holder has an on-site medical unit dedicated to vascular neurology activities.
II.-The holder has on-site access, or access under an agreement that allows care to be taken within timescales that are compatible with the imperatives of care safety, to:
a) An emergency facility;
b) A resuscitation unit;
c) A neurosurgery unit.
III.-The holder has, on site or by agreement, access to:
a) A medical imaging centre on site allowing cerebral explorations by scanner and MRI to be carried out within a timeframe compatible with the imperatives of care safety, twenty-four hours a day, every day of the year;
b) An interventional catheterisation centre providing all diagnostic and therapeutic procedures relating to cerebrovascular pathologies.