Primary Thrombectomy Versus Combined Mechanical Thrombectomy and Intravenous Thrombolysis in Large Vessel Occlusion Acute Ischemic Stroke

J Stroke Cerebrovasc Dis. 2019 Mar;28(3):627-631. doi: 10.1016/j.jstrokecerebrovasdis.2018.11.002. Epub 2018 Nov 22.

Abstract

Mechanical thrombectomy (MT) in combination with intravenous thrombolysis (IVT) is the standard of care for patients with acute ischemic stroke with anterior circulation large vessel occlusion. The particular benefit of IVT in these patients is unknown. We performed a retrospective analysis of patients submitted to MT at our center between January 2015 and June 2017. Functional outcome was prospectively assessed using modified Rankin scale (mRS) at 3 months. A total of 234 patients were enrolled, 152 (65%) in the combined treatment group and 82 (35%) in the direct MT group. Patients receiving combined treatment had a higher frequency of intracranial internal carotid artery occlusion (48 [31.6%] versus 16 [19.5%], P = .048) and significantly less strokes of cardioembolic etiology (72 [47.4%] versus 57 [69.5%], P = .01). Other baseline characteristics did not differ between the 2 groups. Good functional outcome at 3 months (mRS 0-2) was trending toward being higher in patients in the combined treatment group (98 [64.9%] versus 42 [52.5%], P = .066). Rates of symptomatic intracranial hemorrhage (5 [3.3%] versus 4 [4.9%], P = .723) and mortality (15 [9.9%] versus 14 [17.5%], P = .099) did not differ between groups. In multivariate logistic regression analysis, we did not find a statistically significant association between the use of IVT and any of the outcomes studied. Our results suggest that combined treatment carries similar effectiveness and safety than direct MT. Randomized controlled trials regarding this subject are warranted.

Keywords: Primary mechanical thrombectomy; stroke; thrombectomy; thrombolysis.

Publication types

  • Comparative Study

MeSH terms

  • Aged
  • Aged, 80 and over
  • Brain Ischemia / diagnosis
  • Brain Ischemia / mortality
  • Brain Ischemia / physiopathology
  • Brain Ischemia / therapy*
  • Carotid Artery, Internal* / physiopathology
  • Carotid Stenosis / diagnosis
  • Carotid Stenosis / mortality
  • Carotid Stenosis / physiopathology
  • Carotid Stenosis / therapy*
  • Combined Modality Therapy
  • Disability Evaluation
  • Female
  • Fibrinolytic Agents / administration & dosage*
  • Fibrinolytic Agents / adverse effects
  • Humans
  • Infarction, Middle Cerebral Artery / diagnosis
  • Infarction, Middle Cerebral Artery / mortality
  • Infarction, Middle Cerebral Artery / physiopathology
  • Infarction, Middle Cerebral Artery / therapy*
  • Infusions, Intravenous
  • Intracranial Hemorrhages / etiology
  • Male
  • Middle Aged
  • Recovery of Function
  • Retrospective Studies
  • Risk Assessment
  • Risk Factors
  • Stroke / diagnosis
  • Stroke / mortality
  • Stroke / physiopathology
  • Stroke / therapy*
  • Thrombectomy / adverse effects
  • Thrombectomy / methods*
  • Thrombectomy / mortality
  • Thrombolytic Therapy / adverse effects
  • Thrombolytic Therapy / methods*
  • Thrombolytic Therapy / mortality
  • Time Factors
  • Treatment Outcome

Substances

  • Fibrinolytic Agents