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Updated: May 19, 2026

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
Published on: October 15, 2021
Thrombolytic evacuation of intracerebral and intraventricular hemorrhage
Mahua Dey1, Agnieszka Stadnik, Issam A Awad
1Hemorrhagic Stroke Research Unit, Section of Neurosurgery, University of Chicago Medicine and Biological Sciences, IL 60637, USA.
Insights
Minimally invasive surgery combined with thrombolytics shows promise for treating intracranial hemorrhage (ICH) and intraventricular hemorrhage (IVH). Larger trials are underway to confirm the therapeutic benefits of this approach for stroke patients.
Area of Science:
- Neurology
- Neurosurgery
- Vascular Medicine
Background:
- Intracranial hemorrhage (ICH) is a severe stroke type with high mortality and cost.
- ICH prevalence significantly increases with age.
- Traditional open surgical evacuation has shown limited benefit for ICH.
Purpose of the Study:
- To review the background of minimally invasive surgery (MIS) for ICH.
- To discuss the use of thrombolytics in ICH and intraventricular hemorrhage (IVH).
- To highlight early findings from MISTIE and CLEAR trials.
Main Methods:
- Review of existing literature on MIS and thrombolytics for ICH/IVH.
- Analysis of early results from the MISTIE and CLEAR clinical trials.
Main Results:
- Small trials suggest encouraging results for MIS with thrombolytics in ICH.
- Early findings from MISTIE (ICH) and CLEAR (IVH) trials are being evaluated.
Conclusions:
- Minimally invasive hematoma evacuation with thrombolytics presents a promising therapeutic strategy.
- Larger clinical trials are essential to optimize and define the benefits of MIS and thrombolysis for ICH and IVH.
Abstract:
Intracranial hemorrhage (ICH) accounts for 10-15 % of all strokes, however it causes 30-50 % of stroke related mortality, disability and cost. The prevalence increases with age with only two cases/100,000/year for age less than 40 years to almost 350 cases/100,000/year for age more than 80 years. Several trials of open surgical evacuation of ICH have failed to show clear benefit over medical management. However, some small trials of minimal invasive hematoma evacuation in combination with thrombolytics have shown encouraging results. Based on these findings larger clinical trials are being undertaken to optimize and define therapeutic benefit of minimally invasive surgery in combination with thrombolytic clearance of hematoma. In this article we will review some of the background of minimally invasive surgery and the use of thrombolytics in the setting of ICH and intraventricular hemorrhage (IVH) and will highlight the early findings of MISTIE and CLEAR trials for these two entities respectively.
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