ArticleFrontiers in neurology2026
Intraoperative transit-time flowmetry of the superficial temporal artery directly predicts and may mitigate risk of postoperative hyperperfusion syndrome in moyamoya bypass surgery.
Article in Frontiers in neurology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To obtain perioperative cerebral blood flow measurements and assess the role of intraoperative blood flow evaluation in predicting postoperative complications. Methods: We conducted a retrospective analysis of 102 cases of extracranial-intracranial (EC-IC) bypass surgery performed for flow augmentation in patients with moyamoya disease. The study monitored blood flow in the donor artery, graft vessels, and recipient artery at various stages. We measured superficial temporal artery (STA) flow during the perioperative period using a transit time ultrasonic flowmeter and Doppler ultrasound for real-time monitoring. A modified MBC scale was developed to evaluate the vascular network of the middle cerebral artery (MCA). STA flow measurements and the modified MBC scale were analyzed for their correlation with the incidence of cerebral hyperperfusion syndrome (CHS). Results: A total of 102 hemispheres underwent revascularization through EC-IC bypass, comprising 69 direct bypass cases and 33 combined bypass cases. We observed fluctuations in donor vascular flow during the perioperative period. The STA flow increased post-anastomosis, stabilizing at an elevated level thereafter. Specifically, the STA Conclusion: The transit time flow (TTF) measurements indicate that the superficial temporal artery (STA) transitions from a low-flow vessel
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