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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Comparison of outcomes after intracerebral hemorrhage and ischemic stroke
David Chiu1, Leif Peterson1, Mitchell S V Elkind2
1Methodist Neurological Institute, Weill Cornell Medical College, Houston, TX.
Insights
Intracerebral hemorrhage (ICH) nearly doubles the odds of long-term disability in stroke patients. However, ICH does not increase mortality risk compared to ischemic stroke when initial severity is considered.
Area of Science:
- Neurology
- Stroke Medicine
- Clinical Research
Background:
- Intracerebral hemorrhage (ICH) is linked to worse stroke outcomes than ischemic stroke.
- Existing research suggests ICH may independently worsen prognosis.
- This study investigates if ICH prognosis is independent of initial stroke severity.
Purpose of the Study:
- To determine if intracerebral hemorrhage (ICH) independently predicts poorer neurologic outcomes.
- To assess the impact of ICH on mortality compared to ischemic stroke, adjusting for stroke severity.
Main Methods:
- Analysis of the Glycine Antagonist in Neuroprotection (GAIN) Americas trial data (1604 patients).
- Compared outcomes for hemorrhagic (N=237) vs. ischemic (N=1367) stroke subtypes.
- Used logistic and linear regression to analyze predictors of mortality and modified Rankin Scale (mRS) scores at 3 months, adjusting for NIH Stroke Scale and other factors.
Main Results:
- ICH significantly increased odds of poor neurologic outcome (OR 1.94, 95% CI 1.23-3.06).
- ICH was independently associated with a 0.25-point increase in 3-month mRS score (P=.04).
- ICH did not significantly affect mortality compared to ischemic stroke after adjustments (OR 1.01, 95% CI .68-1.49).
Conclusions:
- Intracerebral hemorrhage is an independent predictor of poor neurologic outcome in conscious stroke patients.
- ICH nearly doubles the risk of long-term disability.
- ICH is not associated with increased mortality risk compared to ischemic stroke when accounting for initial stroke severity.
Background:
Intracerebral hemorrhage (ICH) is associated with a greater average initial stroke severity, higher mortality, and poorer long-term neurologic outcomes than ischemic stroke. The purpose of this study was to determine whether the poorer prognosis of ICH is independent of initial stroke severity.
Methods:
We analyzed data from the Glycine Antagonist in Neuroprotection (GAIN) Americas trial, in which 1604 non-obtunded patients with acute stroke were treated within 6 hours of symptom onset irrespective of hemorrhagic (N = 237) versus ischemic (N = 1367) subtype. Multiple logistic regression analysis was performed to evaluate predictors of mortality and neurologic outcome (modified Rankin scale [mRS] score of 0-1 v 2-6 at 3 months) adjusting for baseline National Institutes of Health Stroke Scale score, stroke risk factors, clinical and demographic characteristics, and gavestinel treatment group. Multiple linear regression techniques were used to assess the impact of various predictors on the full mRS score at 3 months.
Results:
ICH significantly increased the odds of a poor neurologic outcome (odds ratio 1.94, 95% confidence interval 1.23-3.06) and was independently associated with a mean 0.25-point increase in the 3-month mRS score (P = .04). ICH had no effect on mortality compared with ischemic stroke (odds ratio 1.01, 95% confidence interval .68-1.49) after adjusting for initial stroke severity (National Institutes of Health Stroke Scale score) and other baseline characteristics.
Conclusions:
Among conscious stroke patients, ICH is an independent predictor of poor neurologic outcome, nearly doubling the odds of long-term disability. However, ICH is not associated with higher mortality compared with ischemic stroke after adjusting for initial stroke severity and other baseline characteristics.
Related Concept Videos
Ischemic Stroke ll: Pathophysiology
Ischemic Stroke l: Introduction
Hemorrhagic Stroke ll: Pathophysiology
Hemorrhagic Stroke l: Introduction
