IPH Stands for Intracerebral Hemorrhage (or Intraparenchymal Hemorrhage)
In the context of stroke, IPH is an acronym for intracerebral hemorrhage (also called intraparenchymal hemorrhage), which refers to bleeding directly into the brain tissue itself. This is a specific type of hemorrhagic stroke that accounts for approximately 28.8% of all incident strokes globally 1, 2.
Definition and Clinical Significance
IPH/ICH is defined as a focal collection of blood within the brain parenchyma or ventricular system that is not caused by trauma 1. This distinguishes it from other types of intracranial bleeding such as subdural, epidural, or subarachnoid hemorrhage, which occur in the spaces surrounding the brain rather than within the brain tissue itself.
The terminology is used somewhat interchangeably in medical literature:
- Intracerebral hemorrhage (ICH) is the more commonly used term in clinical guidelines 3, 4, 5
- Intraparenchymal hemorrhage (IPH) emphasizes the location within the brain parenchyma specifically 6
Clinical Context
IPH/ICH represents the most lethal form of stroke, accounting for 45.6% of all stroke deaths despite representing less than 30% of stroke cases 2. It carries:
- The highest mortality rate of all stroke types 6
- Substantial morbidity in survivors
- Nearly half (49.5%) of the total disability-adjusted life years (DALYs) lost to stroke 2
The condition requires immediate recognition and aggressive management, as it differs fundamentally from ischemic stroke in its pathophysiology, treatment approach, and recovery trajectory 3, 7.
Key Distinguishing Features
When you see "IPH" or "ICH" in stroke documentation, it specifically indicates:
- Blood is within the brain tissue (parenchyma), not just in surrounding spaces
- Non-traumatic etiology (spontaneous bleeding)
- Requires different management than ischemic stroke—focusing on preventing hematoma expansion, controlling blood pressure, and managing intracranial pressure rather than reperfusion therapy 4, 5