HydroSoft coil versus HydroCoil for endovascular aneurysm occlusion study: a single center experience.
OBJECTIVE
The HydroCoil Embolic System (HES) was developed to reduce recurrences of aneurysms relative to platinum coils. But the HydroCoil Embolic System was characterized with many limitations. The manufacturer had recognized the challenge and recently a new design of hydrogel-coated coil-HydroSoft has become available in the market as the new generation HydroCoil. We reported our initial experience using HydroSoft coil versus HydroCoil in our center.


METHODS
75 aneurysms embolized primarily using HydroSoft Coils from July 2008 to May 2009 were compared with 66 volume- and shape-matched aneurysms treated with HydroCoils from March 2006 to August 2008. Outcome measures included length and number of coils used, contrast volume, and length of hospital stay. During embolization, a stable framework was first established with bare coils, and hydrogel-coated coils were used subsequently to increase the packing density. Follow-up angiographic results 6 months after treatment were evaluated among some of the patients.


RESULTS
Successful coil embolization was achieved in all patients. There were no differences in average total coil length used per aneurysm. There were no differences in length of hospital stay and packing density. HydroSoft coils were more suitable using as the finishing or final coil. HydroSoft coil decreased the procedure-related retreated rates, and aneurysm packing was finished with soft, flexible HydroSoft coil and decreased the neck remnant rates. Follow-up angiography in HydroSoft-treated patients at 6 months revealed aneurysm stability without significant residual neck.


CONCLUSIONS
HydroSoft coil allowed us to deploy coated coils with good packing density. A slight expansion of these coils at the neck can be expected to reduce neck remnant and potentially inhibit recurrence.
Guo
Xin-Bin
XB
Department of Neurosurgery, Tianjin Medical University, Tianjin Neurological Institute, 154 Anshan Road, Tianjin 300052, China. gxb43198621@sina.com
Fan
Yi-Mu
YM
Zhang
Jian-Ning
JN
D015901:Angiography, Digital Subtraction; D002533:Cerebral Angiography; D020099:Coated Materials, Biocompatible; D004621:Embolization, Therapeutic / Q000295:instrumentation*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D010984:Platinum; D011474:Prosthesis Design; D019233:Retreatment / Q000706:statistics & numerical data; D012189:Retrospective Studies; D016896:Treatment Outcome
D020099:Coated Materials, Biocompatible; D010984:Platinum