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Updated: Sep 12, 2025

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Antihypertensive Drugs after Thrombectomy in Acute Ischemic Stroke with Poor Collateral Are Associated with
Wen Yin1, Hongye Xu1, Jiaming Mao2
1Neurovascular Center, Changhai Hospital, Naval Medical University, Shanghai, China.
Insights
Antihypertensive drugs may worsen outcomes for acute ischemic stroke patients with poor collateral status after endovascular thrombectomy. Caution is advised when using these medications in this patient group.
Area of Science:
- Neurology
- Cardiology
- Radiology
Background:
- The effect of antihypertensive drugs on functional outcomes after endovascular thrombectomy for acute ischemic stroke is debated.
- Collateral status may influence this relationship.
Purpose of the Study:
- To investigate the combined impact of collateral status and antihypertensive drug use on functional outcomes in acute ischemic stroke patients undergoing endovascular thrombectomy.
Main Methods:
- Retrospective analysis of 372 acute ischemic stroke patients who underwent endovascular thrombectomy.
- Patients were categorized by collateral status using hypoperfusion index ratio (HIR).
- Functional outcome was assessed using the 90-day modified Rankin Scale (mRS).
Main Results:
- Antihypertensive drugs were associated with significantly higher odds of unfavorable outcomes (90-day mRS > 2) in patients with poor collateral status (HIR > 0.4).
- No significant association was found in patients with good collateral status (HIR ≤ 0.4).
- A statistically significant interaction was observed between antihypertensive drug use and collateral status.
Conclusions:
- The association between antihypertensive drugs and functional outcomes after endovascular thrombectomy is dependent on collateral status.
- Antihypertensive medications should be used cautiously in acute ischemic stroke patients with poor collateral status post-thrombectomy.
Introduction:
The impact of antihypertensive drugs on functional outcome in patients with acute ischemic stroke (AIS) after endovascular thrombectomy (EVT) remains controversial and may vary with collateral status (CS). We aimed to investigate the joint effect of CS and antihypertensive drugs on functional outcome in patients with AIS.
Methods:
We retrospectively analyzed anterior circulation large-vessel occlusion AIS patients who underwent EVT in our hospital between January 2018 and December 2022. The patients were dichotomized to good CS, reflected by hypoperfusion index ratio (HIR) ≤0.4, and poor CS, reflected by HIR >0.4. Functional outcome was assessed using modified Rankin Scale (90d mRS). The primary outcome was defined as the 90d mRS > 2. The association between antihypertensive drugs within 48 h after EVT and functional outcome was evaluated. Furthermore, the interaction between HIR and antihypertensive drugs was measured.
Results:
A total of 372 patients were included. The proportion of patients receiving antihypertensive drugs was comparable between the good CS and poor CS group (51% vs. 56%, p = 0.285). Antihypertensive drugs were significantly associated with higher odds ratio (OR) of unfavorable outcome {OR 3.83 (95% confidence interval [CI], 2.12-6.90); p < 0.001} in poor CS group. No correlation was found in good CS group (p = 0.159). The interaction between antihypertensive drugs and baseline CS was statistically significant (Pinteraction = 0.040, adjusted Pinteraction = 0.029).
Conclusion:
The association between antihypertensive drugs and functional outcome varied based on the CS. These findings suggest that antihypertensive drugs should be used with caution in AIS patients with poor CS after EVT.
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