Posts Tagged ‘onyx’

Improved Results for Treatment of Persistent type 2 Endoleak after Endovascular Aneurysm Repair: Onyx Glue Embolization

Writer, Curator: Larry H Bernstein, MD, FCAP


Curator: Aviva Lev-Ari, PhD, RN 



This report is an evaluation of onyx glue use in endovascular aneurysm repair. Onyx® is a non-adhesive liquid embolic agent used for the pre-surgical embolization of brain Arteriovenous malformations (bAVM).
Onyx is comprised of EVOH (ethylene vinyl alcohol) copolymer dissolved in DMSO (dimethyl sulfoxide), and suspended micronized tantalum powder to provide contrast for visualization under fluoroscopy.
A DMSO compatible delivery micro catheter that is indicated for use in the neuro vasculature (e.g. Marathon™, Rebar® or UltraFlow™ HPC catheters) is used to access the embolization site.
Onyx is available in two product formulations, Onyx 18 (6% EVOH) and Onyx 34 (8% EVOH).
ONYX glue

Improved results using Onyx glue for the treatment of persistent type 2 endoleak after endovascular aneurysm repair. 

Abularrage CJ, Patel VI, Conrad MF, Schneider EB, Cambria RP, Kwolek CJ
Division of Vascular and Endovascular Surgery, Massachusetts General Hospital and Harvard Medical School, Boston, Mass 02114, USA.
J Vasc Surg. 2012 Sep;56(3):630-6.  http://dx.doi.org/10.1016/j.jvs.2012.02.038.  Epub 2012 May 8.
Persistent type 2 (PT2) endoleaks (present ≥ 6 months) after endovascular aneurysm repair are associated with adverse outcomes, and
  • selective secondary intervention is indicated in those patients with an expanding aneurysm sac.

This study evaluated the outcomes of secondary intervention for PT2.

From 1999 to 2007, 136 patients who underwent endovascular aneurysm repair developed PT2 and comprised the study cohort. Primary end points included
  • PT2 resolution (secondary interventional success) and
  • survival
 both  were evaluated using multiple logistic regression and Kaplan-Meier analyses
Fifty-one patients underwent a total of 68 secondary interventions for PT2 with expanding aneurysm sacs
  • with a median postsecondary interventional follow-up of 13.7 months.

Secondary interventions included

  • 20 inferior mesenteric artery coil embolizations,
  • 17 Onyx glue embolizations,
  • 11 aneurysm sac coil embolizations,
  • 10 non-Onyx glue embolizations,
  • 7 lumbar artery coil embolizations,
  • 2 open lumbar ligations, and 1 graft explant.
The overall secondary interventional success rate was 43% (29 of 68). Onyx glue embolization was associated with
  • a greater success rate when used as the initial secondary intervention (odds ratio, 59.61; 95% confidence interval, 4.78-742.73; P < .001). 
There was no difference in success between the different techniques when multiple secondary interventions were required. Five-year survival was 72% ± 0.08% and
  • was unrelated to any of the secondary interventional techniques.
Secondary intervention for PT2 is associated with success in less than half of all cases. Onyx glue embolization was associated with greater long-term success
  • when used as the initial secondary intervention.
Competition in the Ecosystem of Medical Devices in Cardiac and Vascular Repair: Heart Valves, Stents, Catheterization Tools and Kits for Open Heart and Minimally Invasive Surgery (MIS)  (Aviva Lev-Ari)
Vascular Repair: Stents and Biologically Active Implants (larryhbern)
Drug Eluting Stents: On MIT’s Edelman Lab’s Contributions to Vascular Biology and its Pioneering Research on DES  (larryhbern)
Coronary Artery Disease – Medical Devices Solutions: From First-In-Man Stent Implantation, via Medical Ethical Dilemmas to Drug Eluting Stents  (Aviva Lev-Ari)
Trans-apical Transcatheter Aortic Valve Replacement in a Patient with Severe and Complex Left Main Coronary Artery Disease (LMCAD) (larryhbern)
Transcatheter Aortic Valve Replacement (TAVR): Postdilatation to Reduce Paravalvular Regurgitation During TAVR with a Balloon-expandable Valve  (larryhbern)
Svelte Medical Systems’ Drug-Eluting Stent: 0% Clinically-Driven Events Through 12-Months in First-In-Man Study  (Aviva Lev-Ari)
Acute and Chronic Myocardial Infarction: Quantification of Myocardial Perfusion Viability – FDG-PET/MRI vs. MRI or PET alone  (Justin Pearlman, Aviva Lev-Ari)
Biomaterials Technology: Models of Tissue Engineering for Reperfusion and Implantable Devices for Revascularization (larryhbern)
Revascularization: PCI, Prior History of PCI vs CABG  (A Lev-Ari)
The ACUITY-PCI score: Will it Replace Four Established Risk Scores — TIMI, GRACE, SYNTAX, and Clinical SYNTAX  (A Lev-Ari)
Absorb™ Bioresorbable Vascular Scaffold: An International Launch by Abbott Laboratories (Aviva Lev-Ari)
Carotid Stenting: Vascular surgeons have pointed to more minor strokes in the stenting group and cardiologists to more myocardial infarctions in the CEA cohort. (A Lev-Ari)
Endovascular repair of cerebral aneurysm.

Endovascular repair of cerebral aneurysm. (Photo credit: Wikipedia)

Read Full Post »

%d bloggers like this: