Temporary Intraoperative Cerebral Blood Flow Reduction to Facilitate Neurovascular Procedures

Area of Science:

• Neurosurgery
• Endovascular Surgery
• Vascular Neurology

Background:

• Temporary blood flow reduction is critical for managing complex neurovascular lesions.
• Both open and endovascular approaches necessitate precise control of blood flow.

Purpose of the Study:

• To review and compare four primary techniques for achieving temporary blood flow reduction during neurovascular procedures.
• To evaluate the advantages and disadvantages of each technique in different clinical scenarios.

Main Methods:

• Review of deep hypothermic circulatory arrest (DHCA).
• Analysis of intravenous adenosine administration.
• Examination of rapid ventricular pacing (RVP).
• Assessment of endovascular balloon-assisted occlusion.

Main Results:

• DHCA is largely obsolete due to high morbidity.
• Adenosine offers availability but unpredictable hemodynamic responses.
• RVP provides controlled reduction but needs planning.
• Balloon-assisted occlusion allows localized control in challenging anatomy.

Conclusions:

• No single flow reduction technique is universally superior.
• Optimal strategy selection depends on lesion characteristics, expertise, and resources.
• Future research should explore neuroprotection and prospective studies on safety and efficacy.