Endovascular Thrombectomy Alone versus Combined with Intravenous Thrombolysis

World Neurosurg. 2017 Dec;108:850-858.e2. doi: 10.1016/j.wneu.2017.08.040. Epub 2017 Aug 18.

Abstract

Background: To date, no randomized trial has directly addressed the question of whether intravenous (IV) tissue plasminogen activator (tPA) improves outcomes in IV tPA-eligible patients who will eventually undergo endovascular therapy (EVT), or whether a direct EVT strategy is equally effective. We performed a systematic review and meta-analysis to compare the efficacy and safety of direct EVT versus endovascular treatment with IV tPA (EVT+IV tPA) in adults with acute ischemic stroke.

Methods: We performed electronic searches of 6 databases from their inception to January 2017. Data were extracted and analyzed according to predefined clinical endpoints.

Results: Twelve comparative studies, comprising 1275 patients in the EVT-only arm and 1340 patients in the combined EVT+IV tPA arm, were included. The rates of good functional outcomes (modified Rankin Scale score ≤2) and 90-day mortality were not statistically significantly different between the EVT and EVT+IV tPA arms (44% vs. 48%; odds ratio [OR], 0.80; 95% confidence interval [CI], 0.64-1.002; P = 0.052 and 20.4% vs. 19.4%, OR 1.19; 95% CI, 0.83-1.71; P = 0.34, respectively). The rate of symptomatic intracranial hemorrhage also was not significantly different between the EVT and EVT+IV tPA arms (3.7% vs. 3.8%; OR, 0.98; 95% CI, 0.65-1.48; P = 0.91). There were no between-group differences in the rates of other complications.

Conclusions: No significant differences between the 2 groups were found in terms of favorable functional outcome, mortality rate, or complications based on contemporary endovascular therapies.

Keywords: Acute ischemic stroke; Endovascular; Occlusion; Stent retriever; Thrombectomy; Thrombolysis; Tissue plasminogen activator.

Publication types

  • Comparative Study
  • Meta-Analysis
  • Review
  • Systematic Review

MeSH terms

  • Administration, Intravenous
  • Combined Modality Therapy
  • Endovascular Procedures / methods*
  • Fibrinolytic Agents / therapeutic use*
  • Humans
  • Intracranial Hemorrhages / chemically induced
  • Intracranial Hemorrhages / epidemiology
  • Odds Ratio
  • Postoperative Complications / epidemiology
  • Stroke / therapy*
  • Thrombectomy / methods*
  • Thrombolytic Therapy / methods*
  • Tissue Plasminogen Activator / therapeutic use*

Substances

  • Fibrinolytic Agents
  • Tissue Plasminogen Activator