A new flow diverter stent for direct treatment of intracranial aneurysm

2015 ◽  
Vol 48 (16) ◽  
pp. 4206-4213 ◽  
Author(s):  
Jiayao Ma ◽  
Zhong You ◽  
Thomas Peach ◽  
James Byrne ◽  
Rafik R. Rizkallah
2015 ◽  
Vol 123 (4) ◽  
pp. 841-847 ◽  
Author(s):  
Grzegorz Turek ◽  
Jan Kochanowicz ◽  
Andrzej Lewszuk ◽  
Tomasz Lyson ◽  
Justyna Zielinska-Turek ◽  
...  

OBJECT Distal coil or stent migration is a rare, but potentially morbid complication of intracranial aneurysm embolization. At present, there is no established standard of surgical evacuation of displaced material—in particular, there is no consensus on the optimum time for such intervention. The authors report their positive experiences with an ultra-early surgical evacuation of 2 migrated coils and a flow-diverter stent. METHODS Uncontrolled coil or stent migration occurred in 3 (0.75%) of approximately 400 patients treated between 1999 and 2012 in the authors' institution. In all 3 cases, the materials moved from their intended position to the middle cerebral artery (MCA). Surgical evacuation was started immediately (within half an hour) after a futile attempt of removing them via intraarterial route, under the same anesthesia and with no active reversal of heparinization. RESULTS No excessive bleeding was observed. Displaced coils were extracted through an incision of a branch of MCA—the anterior temporal artery, the stent was removed through a direct incision of MCA. Recombinant tissue plasminogen activator (rtPA) was injected to the stem of the internal carotid artery toward the end of the procedure, with no discernible adverse effects. Two patients were discharged with no deficit (Glasgow Outcome Scale [GOS] Score 5); the other patient was conscious with mild hemiparesis (GOS Score 4) at discharge. CONCLUSIONS The experiences of these 3 cases suggest that immediate removal of a migrated stent/coil is feasible and may be effective. Indirect access to the MCA through its branch helps to shorten the time of temporary clipping of the artery to a minimum. Maintaining active heparinization and direct intraarterial injection of rtPA are helpful in promoting blood flow in the MCA.


2015 ◽  
Vol 21 (1) ◽  
pp. 69-71
Author(s):  
Georgios Kapsas ◽  
Caterina Budai ◽  
Francesco Toni ◽  
Francesco Patruno ◽  
Anna Federica Marliani ◽  
...  

Author(s):  
Assylbek Kaliyev ◽  
Yerbol Makhambetov ◽  
Yerkin Medetov ◽  
Marat Kulmirzayev ◽  
Serik Dusembayev ◽  
...  

Author(s):  
Michael Veldeman ◽  
Hani Ridwan ◽  
Dimah Hasan ◽  
Annette Rieg ◽  
Hans Clusmann ◽  
...  

Abstract Background and Importance Traumatic avulsion of the ophthalmic artery is a rare cause of subarachnoid hemorrhage (SAH). In this case, a relative minor fall with isolated ocular trauma caused bulbar dislocation and rupture of the ophthalmic artery in its intracranial segment resulting in subarachnoid bleeding. Clinical Presentation In a female patient in her 70s, a direct penetrating trauma to the orbit by a door handle resulted in basal SAH with blood dispersion into both Sylvian fissures. Cerebral angiography revealed a blunt-ending stump at the origin of the ophthalmic artery. To provide protection against further bleeding, a flow diverter stent was placed in the internal carotid artery to cover the origin of the ophthalmic artery. After a longer intensive care stay complicated by pneumonia and respiratory insufficiency, the patient made a full recovery. Of all four reported cases (including ours), delayed cerebral ischemia was seen in one patient and hydrocephalus in two patients. These potential complications necessitate close observation and fitting treatment similar to aneurysmal SAH. Conclusion Due to similar physiologic aspects, this type of bleed mimics many aspects of aneurysmal SAH. In this case, we observed no hydrocephalus or the development of delayed cerebral ischemia. This represents, however, the first reported case treated by placement of a flow diverter stent to prevent rebleeding and pseudoaneurysm formation.


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