Intraoperative Neurophysiological Monitoring for Intracranial Aneurysm Surgery

  • Laura B. HemmerEmail author
  • Carine Zeeni
  • Bernard R. Bendok
  • Antoun Koht


Intracranial aneurysm rupture presents a high risk of neurologic morbidity and mortality. To avoid potential rupture in an intact aneurysm or to facilitate management and minimize risk of a re-bleed in a ruptured aneurysm, treatment modalities, such as endovascular coiling and surgical aneurysm clipping, are performed. To help provide real-time functional assessment of neurologic function intraoperatively and thus allow identification and correction of potentially deleterious maneuvers, intraoperative neuromonitoring can be performed. There is growing literature support for use of evoked potentials for these procedures, particularly for intracranial aneurysm clipping.


Intracranial aneurysm Intraoperative neuromonitoring Clip ligation Endovascular therapy Adenosine 

Supplementary material

Video 21.1

Expected field movement with transcranial MEP stimulation. Movement with arterial pulsation is visible and additional small increases in movement are seen with stimulation (WMV 13,122 kb)

Video 21.2

Typical ICG angiogram inspecting an aneurysm post clip placement (WMV 10,450 kb)

Video 21.3

Clip reconstruction involves opening the aneurysm dome after trapping the aneurysm; therefore, reperfusion cannot occur until the aneurysm is secured (WMV 55,003 kb)

Video 21.4

Brisk bleeding in the field from aneurismal rupture is visible followed by a clearing of the surgical field during adenosine-induced cardiac standstill (WMV 6689 kb)

Video 21.5

EKG tracing on the patient’s intraoperative monitor showing sinus rhythm followed by asystole during adenosine-induced cardiac standstill (3gp 1242 kb)


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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Laura B. Hemmer
    • 1
    Email author
  • Carine Zeeni
    • 2
  • Bernard R. Bendok
    • 3
  • Antoun Koht
    • 4
  1. 1.Departments of Anesthesiology and Neurological SurgeryNorthwestern University Feinberg School of MedicineChicagoUSA
  2. 2.Department of AnesthesiologyAmerican University of Beirut Medical CenterBeirutLebanon
  3. 3.Department of Neurologic Surgery in Arizona, Mayo Clinic Arizona, Mayo Clinic HospitalMayo Clinic College of MedicinePhoenixUSA
  4. 4.Departments of Anesthesiology, Neurological Surgery and NeurologyNorthwestern University Feinberg School of MedicineChicagoUSA

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