Progressing haemorrhagic stroke: categories, causes, mechanisms and managements

Area of Science:

• Neurology
• Neurosurgery
• Stroke Medicine

Background:

• Hemorrhagic stroke is a severe subtype with high morbidity and mortality.
• Progressing hemorrhagic stroke, often overlooked, leads to worse clinical outcomes than non-progressing types.
• Understanding the progression of hemorrhagic stroke is crucial for improving patient management.

Purpose of the Study:

• To categorize progressing hemorrhagic stroke into distinct subtypes.
• To elucidate the underlying mechanisms for each subtype of progressing hemorrhagic stroke.
• To outline the differential management strategies for each subtype.

Main Methods:

• This review article categorizes progressing hemorrhagic stroke based on temporal progression and underlying causes.
• It analyzes the mechanisms contributing to acute, subacute, and chronic progression.
• It discusses the distinct clinical management approaches for each subtype.

Main Results:

• Progressing hemorrhagic stroke is classified into acute, subacute, and chronic types.
• Acute progression is driven by hematoma expansion, intraventricular hemorrhage, edema, and inflammation.
• Subacute progression involves a 'second peak' of edema or 'tension hematoma', while chronic progression results from slowly expanding encapsulated hematomas due to vascular malformations, trauma, or surgery.

Conclusions:

• The three subtypes of progressing hemorrhagic stroke (acute, subacute, chronic) have different causative mechanisms.
• Management strategies vary significantly, with conservative treatment for acute progression and surgical intervention for subacute and chronic types.
• Further research into the specific mechanisms and optimal treatments for each subtype is warranted.