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Updated: Jun 26, 2025

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Exploring the optimal lower blood pressure boundary during endovascular thrombectomy in patients with large vessel
Yu-Ming Chang1, Chun-Min Wang1, Kang-Po Lee2
1Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Insights
Maintaining systolic blood pressure (SBP) above 130-140 mmHg during endovascular therapy (EVT) may improve functional outcomes. Minimizing blood pressure fluctuations during EVT is also associated with better results.
Area of Science:
- Neurology
- Interventional Radiology
- Cardiovascular Medicine
Background:
- Current guidelines recommend maintaining blood pressure (BP) below 180/105 mmHg during endovascular therapy (EVT).
- The optimal lower BP boundary during EVT is not well-established and is largely based on expert consensus.
- This study investigates the relationship between specific lower BP targets and functional outcomes after EVT.
Purpose of the Study:
- To determine the correlation between various lower boundary targets for systolic BP (SBP) and diastolic BP (DBP) during EVT and 3-month functional outcomes.
- To explore the association between periprocedural BP variability and functional outcomes following EVT.
Main Methods:
- A cohort study involving 201 patients with large artery occlusion undergoing EVT within 8 hours of stroke onset.
- Mean BP values during EVT were recorded, and logistic regression models were used to assess the association between BP targets and outcomes.
- Analysis also included the relationship between BP variability and functional outcomes.
Main Results:
- An SBP higher than 130 or 140 mmHg was independently associated with improved functional outcomes at 3 months (aOR 2.34-2.80).
- SBP exceeding 130 mmHg correlated with decreased 3-month mortality (aOR 0.24).
- Higher periprocedural SBP variability was linked to poorer functional outcomes (aOR 0.42). No significant association was found for DBP targets.
Conclusions:
- A systolic BP range above 130-140 mmHg may represent a safe lower boundary during EVT.
- Minimizing BP fluctuations during EVT could be crucial for improving functional outcomes.
- These findings suggest potential adjustments to BP management strategies during EVT.
Background:
Current guidelines advocate for maintaining BP level below 180/105 mmHg during EVT, determining the safe lower boundary remains primarily consensus-driven by experts. This study aims to delve into the correlation between various targets of lower boundary for systolic and diastolic BP (SBP and DBP) during EVT and 3-month functional outcomes.
Methods:
A cohort study was conducted across two EVT-capable centers, enrolling patients with large artery occlusion undergoing EVT within 8 h of stroke onset. Mean BP values during EVT were meticulously recorded, and logistic regression models were utilized to evaluate the correlation between outcomes and diverse lower boundary targets for SBP and DBP. Additionally, logistic regression models investigated the relationship between periprocedural BP variability and subsequent outcomes.
Results:
Among the 201 patients included, having a SBP higher than 130 or 140 mmHg showed an independent association with increased good functional outcomes at 3 months (adjusted odds ratio, aOR 2.80, 95% Cis, 1.26-6.39 for 140 mmHg; aOR 2.34, 95% Cis, 1.03-5.56 for 130 mmHg). Additionally, an SBP exceeding 130 mmHg was correlated with decreased 3-month mortality (aOR, 0.24, 95% CI 0.07-0.74). No significant relationship was observed between DBP and functional outcomes. Patients with higher periprocedural SBP coefficient variance exhibited a decreased rate of good functional outcomes at 3 months (aOR, 0.42, 95% CI, 0.18-0.96).
Conclusion:
A SBP range above 130-140 mmHg could potentially serve as a safe lower boundary during EVT, while minimizing BP fluctuations may correlate with improved post-EVT functional outcomes.
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Related Concept Videos
Pre-Procedural Guidelines for Assessing Blood Pressure
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Sites for measruring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement