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Moyamoya Disease-Standards and Advances in Revascularization Procedure and Peri-operative Management

Miki Fujimura1

  • 1Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan. fujimur@med.hokudai.ac.jp.

Advances and Technical Standards in Neurosurgery
|February 2, 2022
PubMed

Insights

Superficial temporal artery-middle cerebral artery (STA-MCA) bypass surgery improves cerebral blood flow in Moyamoya disease (MMD) patients. Understanding peri-operative hemodynamics is crucial for managing post-surgical complications like hyperperfusion and ischemia.

Area of Science:

  • Neurosurgery
  • Cerebrovascular Medicine
  • Hemodynamics

Background:

  • Moyamoya disease (MMD) is a chronic occlusive cerebrovascular condition.
  • It involves progressive stenosis of the internal carotid artery and abnormal basal brain vasculature.
  • STA-MCA bypass is a key surgical intervention for MMD.

Purpose of the Study:

  • To demonstrate the standard STA-MCA bypass procedure for adult MMD patients.
  • To highlight potential pitfalls in the early postoperative period.
  • To describe characteristic peri-operative hemodynamic changes post-surgery.

Main Methods:

  • Detailed description of the standard STA-MCA bypass with indirect pial synangiosis.
  • Analysis of peri-operative hemodynamic conditions in adult MMD patients.
  • Identification of complications such as local cerebral hyperperfusion and watershed shift phenomenon.

Main Results:

  • STA-MCA bypass is a preferred procedure for improving cerebral blood flow in MMD.
  • Flow-augmentation bypass may prevent re-bleeding in hemorrhagic MMD.
  • Post-surgery, patients may experience local cerebral hyperperfusion and hemodynamic ischemia due to watershed shift.

Conclusions:

  • Thorough understanding of MMD pathology and peri-operative hemodynamics is essential for surgical success.
  • Awareness of potential complications like hyperperfusion and ischemia is critical for managing adult MMD patients undergoing bypass surgery.
Keywords:
Cerebral hyperperfusionFlow-augmentation bypassMoyamoya diseaseRevascularization surgerySurgical complication

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