Usefulness of Hydrogel-Coated Coils in Embolization of Pulmonary Arteriovenous Malformations¹
Overview
To evaluate the usefulness of hydrogel-coated coils for preventing recanalization after coil embolization of pulmonary arteriovenous malformations (PAVMs).
Study Design
- Retrospective analysis of 37 consecutive patients with 57 previously untreated PAVMs between Jan 2013 and Jun 2017.
- Mean age of patients was 49 years (range 9-83 years).
- Median size of the feeding artery was 3.7mm (range 1.5-6.1mm).
- Median size of the venous sac was 9.3mm (range 2.6-36.6mm).
- For all PAVMs, embolization was performed using hydrogel-coated coils with or without other coils.
- Recanalization was evaluated with time-resolved magnetic resonance angiography and/or pulmonary angiography (TR-MRA).
Result
![Result of Usefulness of Hydrogel-Coated Coils about clinical evidence of Azur (image)](/sites/g/files/qlpvch321/files/styles/free_crop/public/2022-11/clinical_evidence_azur_usefulness_of_hydrogel_coated_coils_1_880x296_2.png?itok=1vWPfY8U)
![Two feeding arteries embolized using hydrogel-coated coils (image)](/sites/g/files/qlpvch321/files/styles/large/public/2022-11/clinical_evidence_azur_usefulness_of_hydrogel_coated_coils_3.png?itok=pmm618Mr)
Two feeding arteries embolized using hydrogel-coated coils
![TR-MRA at 21 months after coil embolization shows no recanalization (image)](/sites/g/files/qlpvch321/files/styles/large/public/2022-11/clinical_evidence_azur_usefulness_of_hydrogel_coated_coils_2.png?itok=r5jwVpDL)
TR-MRA at 21 months after coil embolization
shows no recanalization
Reprinted from Cardiovascular and interventional radiology vol 41, (2018) : 848-855.
Conclusion
Hydrogel-coated coils may be useful to reduce the occurrence of recanalization after the embolization of PAVMs.