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Venous Thrombosis III: Interprofessional Care01:29

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Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
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Optimizing thrombectomy in medium vessel occlusion: Focus on vessel diameter.

Yujiro Tanaka1, Daisuke Watanabe2, Yusuke Kanoko3

  • 1Department of Neurosurgery, Fujieda Municipal General Hospital, Fujieda, Japan.

Interventional Neuroradiology : Journal of Peritherapeutic Neuroradiology, Surgical Procedures and Related Neurosciences
|August 8, 2024
PubMed
Summary

Mechanical thrombectomy for medium vessel occlusion (MeVO) using a matching strategy demonstrated good efficacy and safety. This approach, focusing on vessel diameter and catheter selection, is particularly effective in narrower vessels.

Keywords:
Medium vessel occlusionaspiration cathetermatching strategythrombectomyvessel diameter

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Area of Science:

  • Neurology
  • Interventional Neuroradiology
  • Vascular Surgery

Background:

  • Mechanical thrombectomy for medium vessel occlusion (MeVO) presents significant challenges with limited established outcomes.
  • Optimizing procedural strategies is crucial for improving treatment success in MeVO.

Purpose of the Study:

  • To evaluate the efficacy and safety of a novel procedural strategy for MeVO.
  • This strategy involves precise occluded vessel diameter measurement and matched aspiration catheter selection.

Main Methods:

  • Retrospective analysis of 70 patients undergoing mechanical thrombectomy for MeVO at two stroke centers (May 2020 - April 2023).
  • Inclusion criteria focused on the "matching strategy": vessel diameter assessment, matched aspiration catheter selection, and firm clot engagement (with or without stent retriever).
  • Efficacy assessed by modified Thrombolysis in Cerebral Infarction (mTICI) scores; safety evaluated by intracranial hemorrhage (ICH) and procedure-related complications.

Main Results:

  • High rates of successful reperfusion: mTICI 2b/2c/3 achieved in 82.9% and mTICI 2c/3 in 51.4% of patients.
  • No symptomatic intracranial hemorrhage (ICH) observed.
  • Asymptomatic subarachnoid hemorrhage (SAH) occurred in 24.3%, with higher incidence in narrower vessels (≤1.5 mm).
  • Occluded vessel diameter and clot contact method were predictors of clinical outcomes.

Conclusions:

  • The matching strategy for mechanical thrombectomy in MeVO offers acceptable efficacy and safety.
  • For narrower vessels, engaging matched aspiration catheters and clots without conventional stent retrievers is recommended.
  • This tailored approach may improve outcomes in challenging MeVO cases.