LEO Baby Stent Use following Balloon-Assisted Coiling: Single- and Dual-Stent Technique--Immediate and Midterm Results of 29 Consecutive Patients.
OBJECTIVE
We report our preliminary results in terms of safety and efficacy in using the low-profile LEO Baby stent for the treatment of large-neck and complex intracranial aneurysms with balloon-then-stent-assisted coiling and single- or dual-stent-assisted coiling.


METHODS
Clinical and radiologic data of all consecutive patients treated at our institution from September 2012 to October 2013 for an intracranial aneurysm by using a LEO Baby stent were retrospectively analyzed. Immediate and midterm clinical and anatomic follow-up of each patient is reported.


RESULTS
Twenty-nine patients with 29 aneurysms were treated with LEO Baby stents at our institution. The mean age of patients was 48 years; 20 patients were women (71%). One patient was treated in the acute phase of a subarachnoid hemorrhage. In 8 procedures, a double-lumen-catheter balloon was used for balloon-then-stent-assisted coiling. In 3 cases, a LEO Baby stent was used in a Y-, T-, and telescopic dual-stent configuration. In 18 cases, a single LEO Baby stent was used. In 2 cases, technical failure to deploy the stent resulted in acute parent artery thrombosis. In 3 further cases, thromboembolic complications occurred intraoperatively. MR imaging and angiographic midterm follow-up showed complete aneurysm occlusion for 96% of the followed patients (27/29). Clinical outcome was favorable for all patients followed up.


CONCLUSIONS
Results obtained in our study by using the LEO Baby stent for balloon-then-stent and single- or dual-stent-assisted coiling of complex and distally located intracranial aneurysms are encouraging. Incomplete or inadequate opening of the device is a potential cause of laminar blood flow alteration and thrombus formation.
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France paolo.machi@gmail.com.
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Machi
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Costalat
Imperial College Healthcare (K.L.), London, UK.
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Lobotesis
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Ruiz
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Cheikh
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Eker
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Gascou
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Danière
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Riquelme
From the Centre Hospitalier Universitaire Gui de Chauliac (P.M., V.C., C.R., Y.B.C., O.E., G.G., F.D., C.R., A.B.), Montpellier, France.
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Bonafé
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects / Q000379:methods*; D004621:Embolization, Therapeutic / Q000009:adverse effects / Q000295:instrumentation*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012189:Retrospective Studies; D015607:Stents / Q000009:adverse effects; D016896:Treatment Outcome; D055815:Young Adult