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Published on: October 15, 2021
Aggressive vs. Conservative Blood Pressure Reduction in Acute Intracerebral Hemorrhage: A Systematic Review and
Gabriel Semione1, Marcio Yuri Ferreira2, Ahmet Gunkan3
1Department of Medicine, University of West Santa Catarina, Joaçaba, Brazil.
Insights
Aggressive blood pressure lowering in intracerebral hemorrhage showed similar functional outcomes and mortality compared to conservative management. However, aggressive lowering was associated with fewer adverse events and potential modest functional benefits.
Area of Science:
- Neurology
- Critical Care Medicine
- Clinical Trials
Background:
- Intracerebral hemorrhage (ICH) is associated with high mortality and disability.
- Optimal blood pressure (BP) management following ICH remains uncertain, with ongoing debate between aggressive and conservative lowering strategies.
Purpose of the Study:
- To compare the efficacy and safety of aggressive versus conservative blood pressure lowering strategies in patients with intracerebral hemorrhage.
- To evaluate the impact on functional outcomes, mortality, and hematoma growth.
Main Methods:
- Systematic review and meta-analysis of randomized controlled trials (RCTs) sourced from PubMed, Web of Science, Embase, and Cochrane up to August 2025.
- Inclusion of only open-label, blinded-endpoint RCTs.
- Independent data extraction by two authors, with conflicts resolved by a third.
Main Results:
- Eight RCTs involving 12,669 patients were analyzed.
- No significant differences were found between aggressive and conservative BP lowering for functional outcomes (excellent/good recovery) or 90-day mortality.
- Aggressive BP lowering was associated with a reduction in adverse events (RR, 0.87; 95% CI, 0.76-0.99; p = 0.03).
- Sensitivity and subgroup analyses suggested potential modest functional benefits with aggressive BP lowering, though not consistently confirmed.
Conclusions:
- Both aggressive and conservative blood pressure management strategies in ICH result in comparable functional recovery, mortality rates, and hematoma growth.
- Aggressive BP lowering demonstrates a favorable safety profile with fewer adverse events.
- Subgroup analyses indicate a potential for modest functional improvements with aggressive BP management.
Objectives:
Intracerebral hemorrhage carries high mortality and long-term disability. The optimal blood pressure (BP) management strategy-aggressive vs. conservative lowering-remains uncertain. This review compares both strategies.
Data Sources:
Articles from PubMed, Web of Science, Embase, and Cochrane were screened to August 2025.
Study Selection:
Only randomized open-label blinded-endpoint trials were included.
Data Extraction:
Patient characteristics, inclusion criteria, interventions, and outcomes were independently extracted by two authors; conflicts were resolved by a third.
Data Synthesis:
Eight randomized controlled trials (12,669 patients; median age 63 yr; 60% male) met inclusion. No significant differences emerged between aggressive and conservative strategies for excellent functional outcome (risk ratio [RR], 1.07; 95% CI, 0.99-1.16; p = 0.94; I2 = 33%), good functional outcome (RR, 1.09; 95% CI, 0.99-1.20; p = 0.07; I2 = 51%), 90-day mortality (RR, 0.90; 95% CI, 0.77-1.05; p = 0.18; I2 = 0%), or hematoma growth (RR, 0.85; 95% CI, 0.66-1.10; p = 0.22; I2 = 48%). Aggressive BP lowering was associated with fewer adverse events (RR, 0.87; 95% CI, 0.76-0.99; p = 0.03; I2 = 59%). Sensitivity analyses showed significant benefits of the aggressive approach for good recovery (RR, 1.05; 95% CI, 1.01-1.10; p = 0.02; I2 = 0%), although not confirmed in the subgroup analyses (RR, 1.09; 95% CI, 0.97-1.23; p = 0.14; I2 = 61%). For adverse events, subgroup analyses consistently favored the aggressive strategy (RR, 0.81; 95% CI, 0.74-0.88; p < 0.01; I2 = 0%). No clear association with hematoma growth emerged, largely due to heterogeneity.
Conclusions:
Aggressive and conservative BP lowering yielded similar outcomes for functional recovery, mortality, and hematoma growth. Aggressive BP lowering was linked to fewer adverse events, with some subgroup analyses suggesting modest functional benefits.
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