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[Coil Selection, Handling and Troubleshooting in Detachment Failure].

Yuji Matsumaru1, Yuji Kujiraoka

  • 1Department of Neurosurgery, Tsukuba University.

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|January 25, 2021
PubMed
Summary

Using a large first coil in aneurysm treatment significantly reduces retreatment rates. A thicker, longer initial coil promotes stable long-term anatomical results and lifelong rupture prevention.

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Area of Science:

  • Neurosurgery
  • Interventional Radiology
  • Medical Devices

Background:

  • Aneurysm coiling is a common endovascular treatment.
  • Optimizing coil selection is crucial for successful aneurysm occlusion.
  • Minimizing retreatment rates improves patient outcomes and reduces healthcare costs.

Purpose of the Study:

  • To determine the optimal characteristics of the first coil used in aneurysm embolization.
  • To evaluate the impact of the first coil's volume on retreatment rates.
  • To establish guidelines for coil selection to achieve durable aneurysm occlusion.

Main Methods:

  • Retrospective study analyzing coil embolization procedures at Toranomon Hospital.
  • Assessment of the relationship between the first coil's volume and total coil volume.
  • Correlation of first coil dimensions with long-term anatomical results and retreatment necessity.

Main Results:

  • A first coil volume of at least 1/3rd of the total coil volume was associated with significantly lower retreatment rates.
  • A first coil length approximately 8% of the aneurysm volume is suggested.
  • A thick and long first coil contributes to stable long-term anatomical results.

Conclusions:

  • Employing a large, thick, and long first coil is critical for successful and durable aneurysm occlusion.
  • This strategy aims to prevent acute re-rupture in ruptured aneurysms and lifelong rupture in unruptured aneurysms.
  • Proper coil selection and placement are key to achieving optimal endovascular treatment outcomes.