Related Experiment Video
Updated: Jul 6, 2026

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
[Outcome of intraarterial procedures in acute ischemic stroke]
E Martínez-Fernández1, A González, A Gil-Peralta
1Servicio de Neurología. Hospital Universitario Virgen del Rocío, Sevilla, Spain. emartinezf@ya.com
Insights
Intraarterial procedures for acute stroke, particularly middle cerebral artery occlusions, show high recanalization and improved patient outcomes compared to controls. Basilar thrombosis also yielded excellent long-term results, though carotid occlusions were not significantly improved.
Area of Science:
- Neurology
- Interventional Neuroradiology
- Vascular Neurology
Context:
- Acute stroke management involves thrombolytic agents and mechanical devices.
- Intraarterial procedures are increasingly utilized in treating acute stroke patients.
- This study evaluates intervention protocols and outcomes at Hospital Virgen del Rocío (2003-2004).
Purpose:
- To describe the intervention protocol and outcomes of intraarterial procedures in acute stroke patients.
- To compare outcomes of mechanical thrombectomy with historical controls, including the PROACT II trial's placebo group.
- To analyze results based on arterial occlusion site: middle cerebral artery (MCA), basilar artery, and intracranial carotid artery.
Summary:
- 32 procedures were performed for MCA (18), basilar (8), and carotid (6) occlusions, using urokinase, abciximab, and mechanical devices.
- MCA occlusions demonstrated high recanalization (95%) and improved independence (55% vs. 25% controls, p=0.001).
- Basilar thrombosis had excellent outcomes (57% independent), while carotid occlusions showed no significant improvement.
Impact:
- Intraarterial procedures for MCA occlusions significantly improve recanalization and clinical outcomes compared to isolated thrombolysis.
- Excellent long-term outcomes were observed in basilar thrombosis cases.
- The study highlights the efficacy of mechanical thrombectomy for specific stroke types, informing treatment strategies.
Introduction:
In addition to the thrombolytic agents, mechanical devices are being used in intraarterial procedures in acute stroke patients. The intervention protocol and outcomes of intraarterial procedures performed in the Hospital Virgen del Rocío in 2003-2004 are described.
Methods:
The results in each arterial occlusion site and case-control study of the middle cerebral artery (MCA), the placebo group in PROACT II study (Prolyse in Acute Cerebral Thromboembolism II) as historic control group, are described.
Results:
A total of 32 procedures were performed: 18 MCA occlusions, 8 basilar thrombosis and 6 intracranial carotid occlusions. Urokinase, abciximab and mechanical devices were used in 60%, 26% and 60% of the cases, respectively. MCA occlusions: 60% of the cases improved in 24 hours (25% remained asymptomatic). Only 25% controls remained independent versus 55% of the treated patients (p=0.001). Recanalization and complete recanalization rates were 95 % and 45 %, respectively (18% and 2% in the control group). Symptomatic intracranial hemorrhage (SICH) rate was 18% vs 4% in cases and controls. Basilar thrombosis: only one patient died and 57% of the remaining patients were independent. Carotid occlusions: no complete recanalization was achieved and only one patient was independent. Evolution time in SICH patients was longer (p=0.04), with increased international normalized ratio (INR) for thromboplastin time (p=0.06) and old ischemic lesions in brain CT scan (p=0.02) and they were more dependent at three months (p=0.01).
Conclusions:
Intraarterial procedures in MCA occlusions achieve high rates of recanalization and better clinical outcomes than those described in isolated intraarterial thrombolysis. Long-term outcomes in basilar thrombosis were also excellent. Nevertheless, the natural evolution of carotid occlusions was not modified.
Related Concept Videos
Ischemic Stroke ll: Pathophysiology
Ischemic Stroke l: Introduction
Transient Ischemic Attack l: Introduction