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Updated: Jun 12, 2026

Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
Published on: October 15, 2021
Role of high augmentation index in spontaneous intracerebral haemorrhage
Hock Keong Lee1, Ab Rahman Izaini Ghani, Mohamed Saufi Awang
1Department of Neuroscience, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia.
Insights
High augmentation index (AI), a marker of arterial stiffness, independently predicts mortality in patients with intracerebral haemorrhage (ICH). Poor outcome is predicted by Glasgow Coma Scale score, leukocyte count, and haematoma volume.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Stroke Research
Background:
- Intracerebral haemorrhage (ICH) is a severe stroke type with limited treatment options.
- Established risk factors for ICH, including hypertension and diabetes, are linked to arterial stiffness.
- Augmentation index (AI) serves as a surrogate marker for arterial stiffness.
Purpose of the Study:
- To investigate the prognostic significance of high AI in patients diagnosed with spontaneous ICH.
- To identify predictors of both poor outcome and mortality following ICH.
Main Methods:
- A prospective study involving 60 patients with spontaneous supratentorial ICH.
- Modified Rankin Scale used for 3-month outcome assessment.
- Logistic regression analysis to determine independent predictors of outcome and mortality.
Main Results:
- Admission Glasgow Coma Scale score, total leukocyte count, and haematoma volume predicted poor 3-month outcome.
- High AI (OR, 8.6) and midline shift (OR, 7.5) were independently associated with 3-month mortality.
Conclusions:
- Glasgow Coma Scale score, leukocyte count, and haematoma volume are significant predictors of poor ICH outcome.
- High AI and midline shift are significant predictors of mortality in ICH patients.
Background:
Intracerebral haemorrhage (ICH) is the most disabling and least treatable form of stroke. Its risk factors include old age, hypertension, diabetes mellitus, hypercholesterolaemia, smoking and high alcohol intake, which are also associated with arterial stiffness. The aim of the present study was to determine the prognostic value of high augmentation index (AI), which is a surrogate marker of arterial stiffness, in patients with spontaneous ICH.
Methods:
A prospective study of 60 patients with spontaneous supratentorial ICH was conducted. Outcome was assessed using the Modified Rankin Scale at 3 months follow-up. Data were collected on age and sex, risk factors for ICH, clinical parameters, laboratory parameters, radiological findings and hospital management. Logistic regression analysis was carried out to identify independent predictors of 3-month outcome and mortality.
Results:
Admission Glasgow Coma Scale score (OR, 0.7; 95% CI, 0.450-0.971; p = 0.035), total leukocyte count (OR,1.2; 95% CI, 1.028-1.453; p = 0.023) and haematoma volume (OR, 1.1; 95% CI, 1.024-1.204; p = 0.011) were found to be statistically significant in multivariate analysis of 3-month poor outcome. Factors independently associated with mortality were high AI (OR, 8.6; 95%CI, 1.748-40.940; p = 0.007) and midline shift (OR, 7.5; 95%CI, 1.809-31.004; p = 0.005).
Conclusion:
Admission Glasgow Coma Scale score, total leukocyte count and haematoma volume were significant predictors for 3-month poor outcome; high AI and midline shift were significant predictors for 3-month mortality.
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