Bypass of the maxillary to proximal middle cerebral artery or proximal posterior cerebral artery with radial artery graft

Shi, Xiaoyan; Qian, Hai; K.C., K I Singh; Zhang, Yongli; Zhou, Zhongqing; Sun, Yuming

doi:10.1007/s00701-011-1070-x

Cited by 52 publications

(20 citation statements)

References 15 publications

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“…Coiling of these aneurysms is seldom feasible because of the wide neck, involved branches and perforators, and the mass effect from the giant aneurysms. Other limitation of endovascular treatment for these aneurysms is because of significant access issue due to severe tortuosity of the parent vessel and of lack adequate collateral supply to the distal portion of the aneurysm through the circle of Willis [31,36]. Some complex aneurysms showing trapping of P1 aneurysm and clipping of basilar apex aneurysm after a bypass from the supraclinoid ICA to P2 bypass was performed with a radial artery interposition graft.…”

Section: Discussionmentioning

confidence: 99%

Management of complex intracranial aneurysms with bypass surgery: a technique application and experience in 93 patients

et al. 2014

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Despite advances in microsurgery and the development of new endovascular techniques, the treatment of complex intracranial aneurysms remains a daunting challenge for neurosurgeons. In the present study, we retrospectively reviewed our experience of bypass surgery in the treatment of 93 cases of complex intracranial aneurysms. A series of 93 consecutive cases of complex intracranial aneurysms were treated with bypass surgery between April 2004 and July 2013. Radial artery (RA) grafts were used in 58 cases, saphenous vein (SV) grafts in 16 cases, and occipital artery (OA) grafts in 6 cases, while the remaining 13 cases were managed with superficial temporal artery (STA) grafts. In this series, the aneurysms were excised after trapping in 32 cases with mass effect and neural compression. Proximal occlusion of the parent artery was performed in 22 cases of fusiform or giant dissecting aneurysms with subsequent retrograde flow to avoid compromise of the perforators nearby. Trapping was performed after bypass surgery in the remaining 39 cases. Postoperative angiographies were performed in 91 patients and patency of the bypass graft and obliteration of the aneurysms were confirmed in 89 patients. Patency of the bypass could not be confirmed in the remaining two patients, of which one presented with cerebral infarction due to graft occlusion, and the other remained asymptomatic. Within 1 month after surgery, 88 patients had good outcome, four patients needed assistance for daily living, and one death occurred due to brainstem infarction. In 77 patients with a mean follow-up of 3.0 years, 72 patients had good outcome, 4 patients needed assistance for daily living, and 1 death occurred unrelated to surgery. Complex intracranial aneurysms present unique therapeutic challenges that require thorough surgical planning, individualized treatment strategies, and refined neurovascular techniques for successful outcome. Proper use of bypass surgery is imperative in preserving the parent artery and its major perforators. The internal maxillary artery, used as a donor in a bypass, is an effective method due to its shorter distance from the recipient vessels and relatively large diameter with resulting higher flow rate.

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Section: Discussionmentioning

confidence: 99%

Management of complex intracranial aneurysms with bypass surgery: a technique application and experience in 93 patients

et al. 2014

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“…Most studies of ILPE for lithium secondary batteries are based this ternary system; using poly(ethylene oxide) (PEO) as a host polymer. [16][17][18][19][20][21] For sodium ion conducting ILPE, only a few candidate host polymers have been demonstrated, including poly(vinylidene difluoride) (PVdF) and poly(vinylidene fluoridehexafluoropropylene) (PVdF-HFP). 22,23 Very recent research also focused on PEO-based ILPEs for sodium secondary batteries.…”

Section: 2mentioning

confidence: 99%

Poly(vinyl chloride) Ionic Liquid Polymer Electrolyte Based on Bis(fluorosulfonyl)Amide for Sodium Secondary Batteries

Rani

Hwang

Matsumoto

et al. 2017

J. Electrochem. Soc.

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Non-flammable electrolytes have been extensively studied to improve the safety of energy storage devices. In this study, a new ionic liquid polymer electrolyte (ILPE) prepared by a cast technique using poly(vinyl chloride) (PVC) as the host polymer was examined for sodium secondary batteries. The ILPE containing 50 wt% of 1-ethyl-3-methylimidazolium bis(fluorosulfonyl)amide [C 2 C 1 im][FSA] ionic liquid showed an ionic conductivity of 5.6 mS cm −1 at 318 K. It remains stable up to 517 K based on 5 wt% loss. Stable sodium metal electrodeposition/dissolution was observed at the cathodic limit of the electrochemical window for the ILPE containing Na [FSA] Lithium secondary batteries are used in various applications such as portable electronics, consumer electronics, and auto motives. 1,2However, the uneven distribution of lithium resources might limit their feasibility in large scale energy storage systems. Consequently, sodium secondary batteries have become one of the most promising alternatives to lithium secondary batteries.3 The key advantages of using sodium-based energy storage devices are the low cost, and the abundant resources and low redox potential of sodium (E o Na + /Na = −2.71 vs. SHE; which is ∼0.3 V higher than E o Li + /Li ). While organic electrolytes are currently used in researching sodium secondary batteries, 4,5 ionic liquids (ILs) offer great advantages in terms of safety, such as low vapor pressure, low flammability, high thermal stability, high conductivity, and wide electrochemical window. 6,7 The physical and electrochemical properties of ILs in Na secondary batteries have been studied in recent works. [8][9][10][11][12] In real application, polymerization of the IL is one important technique to retain the advantages of ILs and avoid leakage. As a type of gel polymer electrolytes (GPE), the resulting "ionic liquid polymer electrolytes (ILPEs)" consists of ILs, the host polymer, and another component for electrochemical reactions (e.g alkali metal salt). 13,14 In ILPE, it is assumed that the IL phase is trapped within the polymer matrix, forming a self-standing polymer electrolyte with the ions moving in the liquid phase. The advantages of ILPE are high processability, high flexibility, and high dimensional stability that lead to the elimination of the separator. In comparison with the conventional separator, ILPE offers better capacity to trap liquid electrolytes, 15 and acts as the separator and electrolyte at the same time.One of the most challenging issues for ILPEs is improving the compatibility among the IL, the host polymer, and the third component (e.g. alkali metal salt). Most studies of ILPE for lithium secondary batteries are based this ternary system; using poly(ethylene oxide) (PEO) as a host polymer. [16][17][18][19][20][21] For sodium ion conducting ILPE, only a few candidate host polymers have been demonstrated, including poly(vinylidene difluoride) (PVdF) and poly(vinylidene fluoridehexafluoropropylene) (PVdF-HFP). 22,23 Very recent research also focused on PEO-based I...

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“…Shin et al reported interesting results for a PEO-based polymer electrolyte with ionic liquids. 33,34 A composite polymer electrolyte of PEO 20 LiTFSI and N-butyl-N-methylpyrrolidum-TFSI exhibited high electrical conductivity at a moderate temperature and good stability with lithium metal. The addition of RTIL into the polymer electrolyte results in enhancement of the electrical conductivity.…”

Section: ¹2mentioning

confidence: 99%

“…60 ³ cm 2 after storage for 3 days. In addition Shin et al 33 reported that the Li/PEO 10 LiTFSI-N-methyl-N-propylpyrrolidiumTFSI/Li cell showed an initial resistance of ca. 400 ³ cm 2 , which increased to ca.…”

Section: ¹2mentioning

confidence: 99%

Aqueous Lithium-Air Rechargeable Batteries

2012

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This article summarizes our research on aqueous lithium-air rechargeable batteries. Lithium-air batteries have a far higher energy density and lower material cost than lithium-ion batteries, so that they are now attracting growing attention as possible power sources for electric vehicles. Presently, two types of rechargeable lithium-air batteries have been developed; non-aqueous and aqueous types. The aqueous type has a lower specific energy density than the non-aqueous system, but overcomes some severe problems that must still be addressed for the non-aqueous type, such as lithium metal corrosion by water from air and the high polarization of electrode reactions. The key component of the aqueous lithium-air battery is a water-stable lithium metal electrode (WSLE). The WSLE developed in our laboratory consists of lithium metal covered with a lithium conducting polymer electrolyte and a lithium conducting water-stable solid electrolyte, which was successfully operated in a saturated LiOH and LiCl aqueous solution.

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Bypass of the maxillary to proximal middle cerebral artery or proximal posterior cerebral artery with radial artery graft

Cited by 52 publications

References 15 publications

Management of complex intracranial aneurysms with bypass surgery: a technique application and experience in 93 patients

Management of complex intracranial aneurysms with bypass surgery: a technique application and experience in 93 patients

Poly(vinyl chloride) Ionic Liquid Polymer Electrolyte Based on Bis(fluorosulfonyl)Amide for Sodium Secondary Batteries

Aqueous Lithium-Air Rechargeable Batteries

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