Rescue Stenting for Failed Mechanical Thrombectomy in Acute Basilar Artery Occlusions: Analysis of the PC-SEARCH Registry

Santiago Ortega-Gutierrez, Aaron Rodriguez-Calienes, Adam T. Mierzwa, Milagros Galecio-Castillo, Mahmoud Dibas, Sami Al Kasab, Ashley Nelson, Ashutosh P. Jadhav, Shashvat Desai, Gabor Toth, Anas Alrohimi, Mohamad Abdalkader, Piers Klein, Thanh N. Nguyen, Hisham Salahuddin, Aditya Pandey, Sravanthi Koduri, Niraj Vora, Nameer Aladamat, Khaled GharaibehEhad Afreen, Syed Zaidi, Mouhammad Jumaa

Research output: Contribution to journalArticlepeer-review

Abstract

BACKGROUND: We aimed to investigate whether rescue stenting (RS) following failed mechanical thrombectomy (MT) for acute basilar artery occlusion results in superior functional outcomes and enhanced safety compared with the natural history of failed MT. METHODS: This retrospective cohort study utilized data from the Posterior Circulation Ischemic Stroke Evaluation: Analyzing Radiographic and Intra-Procedural Predictors for Mechanical Thrombectomy registry, encompassing 8 high-volume centers in the United States and covering the period from 2015 to 2021. Patients with basilar artery occlusion who experienced failed MT (modified Thrombolysis in Cerebral Infarction score of 0-2a after at least 1 attempt of clot retrieval) were categorized based on whether they received additional intervention with RS. The primary outcome was a shift analysis of the 90-day modified Rankin Scale. Multivariable logistic regression was used to assess both efficacy and safety outcomes. RESULTS: Of a total of 444 patients, 119 presented failed MT and were included in the analysis. The RS group comprised 65 (14.6%) patients, while the control group consisted of 54 (12.2%) patients. After adjusting, the RS group showed a favorable shift in the overall 90-day modified Rankin Scale distribution (adjusted common odds ratio, 4.56 [95% CI, 1.67-12.45]; P=0.003) and higher rates of 90-day 0 to 3 modified Rankin Scale score (RS: 44.6% versus control: 18.5%; adjusted odds ratio, 7.57 [95% CI, 1.91-30.12]; P=0.004) compared with the control group. RS also showed lower rates of 90-day mortality (RS: 43.1% versus control: 64.8%; adjusted odds ratio, 0.27 [95% CI, 0.09-0.80]; P=0.018) and comparable rates of symptomatic intracranial hemorrhage (RS: 3.1% versus control: 13%; adjusted odds ratio, 0.31 [95% CI, 0.05-1.95]; P=0.214). CONCLUSIONS: Our study demonstrated that RS is associated with improved functional outcomes and reduced mortality in basilar artery occlusion patients presenting MT failure. Further randomized trials are needed to validate these findings.

Original languageEnglish
Pages (from-to)401-412
Number of pages12
JournalStroke
Volume56
Issue number2
DOIs
StatePublished - 1 Feb 2025

Keywords

  • basilar artery
  • cerebral infarction
  • intracranial hemorrhages
  • retrospective studies
  • thrombosis

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