Is General Anesthesia for Endovascular Thrombectomy Helpful or Harmful?

Area of Science:

• Neurology
• Anesthesiology
• Interventional Cardiology

Background:

• Endovascular thrombectomy (EVT) improves outcomes for acute ischemic stroke (AIS) with large vessel occlusion, but over half of patients remain functionally dependent.
• Anesthetic strategy is a potential factor influencing EVT success and patient outcomes.
• General anesthesia (GA) has been standard for neuroendovascular procedures, but its necessity and impact in EVT are debated.

Purpose of the Study:

• To review the impact of different anesthetic strategies on outcomes in patients undergoing EVT for acute ischemic stroke.
• To explore potential explanations for conflicting results from existing studies on GA versus non-GA in EVT.
• To analyze the effects of anesthetic choices on hemodynamic parameters, revascularization times, and complications during EVT.

Main Methods:

• Review of existing literature, including nonrandomized studies and recent randomized controlled trials (RCTs) on anesthesia in EVT.
• Analysis of factors influencing procedural success and patient outcomes based on anesthetic approach.
• Discussion of hemodynamic, revascularization, and complication data related to different anesthetic strategies.

Main Results:

• Nonrandomized studies suggest GA may negatively impact outcomes in EVT.
• Recent RCTs show improved or unchanged outcomes with versus without GA, though generalizability is limited.
• Contrasting results may stem from differences in hemodynamic effects, revascularization efficiency, and complication rates.

Conclusions:

• The optimal anesthetic strategy for EVT in acute ischemic stroke remains controversial.
• Further research is needed to clarify the role of GA and non-GA in optimizing EVT outcomes.
• Understanding the influence of anesthetic management on hemodynamics and procedural efficiency is crucial for improving patient recovery.