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Study identifier: NCT07200180 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Perioperative Argon Inhalation to Improve Neurocognitive Recovery After Carotid Surgery

Condition: Carotid Artery Disease · Carotid Artery Stenoses  ·  Sponsor: Negovsky Reanimatology Research Institute

PhasePhase 3
Planned participants100
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Currently, over 400,000 reconstructive surgeries on carotid arteries are performed annually worldwide, including carotid endarterectomy (CEA) and carotid stenting. These interventions have proven effective in preventing ischemic stroke in patients with hemodynamically significant carotid artery stenoses. However, even following a technically successful procedure, the risk of perioperative ischemic brain injury persists. According to meta-analyses, one in five patients exhibits covert ("silent") strokes after reconstructive interventions, with their frequency being ten times higher than that of clinically manifest events. Such lesions are associated with cognitive decline and an increased risk of dementia. An additional risk factor is the "no-reflow" phenomenon-an impairment of microcirculatory reperfusion that occurs even after the restoration of macrovascular blood flow, thereby limiting the effectiveness of surgical revascularization. Cognitive disorders and postoperative delirium, observed in 15-30% of patients after CEA, adversely affect rehabilitation and long-term prognosis. To date, there are no reliable pharmacological strategies to prevent these complications. In this context, inert gases have attracted significant interest as potential neuroprotective agents. Xenon, despite its proven efficacy, is limited by high cost and challenges in industrial production. Argon, in contrast, is accessible, safe, and technologically straightforward to administer. In preclinical …

This description comes directly from the study's public registry record.

Talk to the study team

Oleg Grebenchikov, MD, PhD  ·  +79686494147  ·  oleg.grebenchikov@yandex.ru

Always discuss trial participation with your own doctor first.

Locations (2)

GBWZ of Moscow city hospital n.a. S.P. BotkinMoscow, RussiaRecruiting
Demikhov Municipal Clinical Hospital 68Moscow, RussiaRecruiting

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Source record: clinicaltrials.gov/study/NCT07200180