Aneurysmal subarachnoid hemorrhage (aSAH) has an annual incidence of six cases per 100,000 persons, with a high incidence of long-term poor neurological outcome [ 1 , 2 ]. Several complications may occur after the aneurysm rupture, such as global cerebral ischemia, re-bleeding, medical complications (i.e., infections, anemia and hyponatremia) and the occurrence of secondary brain injury [ 2 ]. As such, poor outcome is strongly related to the occurrence of initial (i.e., early brain injury) or delayed events (i.e., delayed cerebral ischemia). However, the nomenclature of these events and their diagnosis/management need to be better specified.
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Amodio et al. (2020) studied this question.
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