Table 1.

Classification of hemorrhagic events after ischemic stroke and reperfusion therapy consensus (Heidelberg Bleeding Classification)¹³ compared with ECASS III¹⁴

Anatomic intracranial hemorrhage classification	ECASS type	Description
1		Hemorrhagic transformation of infarcted brain tissue
1a	HI1	Scattered small petechiae, no mass effect
1b	HI2	Confluent petechiae, no mass effect
1c	PH1	Hematoma within infarcted tissue, occupying <30%, no substantive mass effect
2		Intracerebral hemorrhage within and beyond infarcted brain tissue
	PH2	Hematoma occupying 30% or more of the infarcted tissue, with obvious mass effect
3		Intracerebral hemorrhage outside the infarcted brain tissue or intracranial-extracerebral hemorrhage
3a		Parenchymal hematoma remote from infarcted brain tissue
3b		Intraventricular hemorrhage
3c		Subarachnoid hemorrhage
3d		Subdural hemorrhage

HI, hemorrhagic infarction; PH, parenchymatous hematoma.