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Updated: Jun 25, 2025
Minimally Invasive Endoscopic Intracerebral Hemorrhage Evacuation
Published on: October 15, 2021
Hypertension control after intracerebral hemorrhage among varying small vessel disease etiologies
Alvin S Das1,2, Akashleena Mallick3,4, Samantha A Mora3,4
1Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA. adas4@bidmc.harvard.edu.
Insights
Cerebral small vessel disease (cSVD) severity and subtype predict long-term hypertension control in patients after intracerebral hemorrhage (ICH). More severe forms of hypertensive-cSVD (HTN-cSVD) are linked to worse blood pressure control post-ICH.
Area of Science:
- Neurology
- Cardiovascular Science
- Radiology
Background:
- Intracerebral hemorrhage (ICH) is linked to cerebral small vessel disease (cSVD), encompassing cerebral amyloid angiopathy (CAA) and hypertensive-cSVD (HTN-cSVD).
- Hypertensive-cSVD presents as strictly deep or mixed-location ICH/microbleeds, with mixed-location indicating a more severe form.
- This study investigates the relationship between HTN-cSVD severity and long-term hypertension control after ICH.
Purpose of the Study:
- To test the hypothesis that more severe forms of HTN-cSVD are associated with poorer hypertension control during long-term follow-up.
- To explore the association between cSVD etiology/severity and systolic blood pressure (SBP) in ICH survivors.
Main Methods:
- Classified 796 non-traumatic ICH survivors into CAA, strictly deep ICH/microbleeds, and mixed-location ICH/microbleeds groups.
- Quantified cSVD burden using a validated MRI-based score (0-6 points).
- Employed a multivariable linear mixed-effects model to assess the association of average follow-up SBP with cSVD characteristics, adjusting for covariates.
Main Results:
- Survivors with CAA-related ICH had lower median SBP (138 mmHg) compared to strictly deep ICH (141 mmHg) and mixed-location ICH/microbleeds (142 mmHg).
- Mixed-location ICH/microbleeds (effect: +3.8 mmHg, p=0.01) and increasing cSVD severity (effect: +1.8 mmHg per score point, p=0.03) were significantly associated with higher follow-up SBP.
- Follow-up duration was a median of 48.8 months.
Conclusions:
- cSVD severity and subtype are significant predictors of long-term hypertension control in ICH patients.
- Patients with more severe cSVD, particularly mixed-location ICH/microbleeds, exhibit poorer hypertension management post-ICH.
- These findings highlight the importance of considering cSVD characteristics for tailored hypertension management strategies in ICH survivors.
Introduction:
Intracerebral hemorrhage (ICH) is attributable to cerebral small vessel disease (cSVD), which includes cerebral amyloid angiopathy (CAA) and hypertensive-cSVD (HTN-cSVD). HTN-cSVD includes patients with strictly deep ICH/microbleeds and mixed location ICH/microbleeds, the latter representing a more severe form of HTN-cSVD. We test the hypothesis that more severe forms of HTN-cSVD are related to worse hypertension control in long-term follow-up after ICH.
Methods:
From consecutive non-traumatic ICH patients admitted to a tertiary care center, we classified the ICH as CAA, strictly deep ICH/microbleeds, and mixed-location ICH/microbleeds. CSVD burden was quantified using a validated MRI-based score (range: 0-6 points). We created a multivariable (linear mixed effects) model adjusting for age, sex, race, year of inclusion, hypertension, and antihypertensive medication usage to investigate the association of average systolic blood pressure (SBP) during follow-up with cSVD etiology/severity.
Results:
796 ICH survivors were followed for a median of 48.8 months (IQR 41.5-60.4). CAA-related ICH survivors (n = 373) displayed a lower median SBP (138 mmHg, IQR 133-142 mmHg) compared to those of strictly deep ICH (n = 222, 141 mmHg, IQR 136-143 mmHg, p = 0.04), and mixed location ICH/microbleeds (n = 201, 142 mmHg, IQR 135-144 mmHg, p = 0.02). In the multivariable analysis, mixed location ICH/microbleeds (effect: + 3.8 mmHg, SE: 1.3 mmHg, p = 0.01) and increasing cSVD severity (+ 1.8 mmHg per score point, SE: 0.8 mmHg, p = 0.03) were associated with higher SBP in follow-up.
Conclusion:
CSVD severity and subtype predicts long-term hypertension control in ICH patients.
