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Outcomes of Chimney and/or Periscope Techniques in the Endovascular Management of Complex Aortic Pathologies

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Chinese Medical Journal 2017年第17期130卷 2095-2100页

作者： Zhi-Yuan Wu Zuo-Guan Chen Li Ma Yong-Peng Diao yue-Xin Chen Chang-Wei Liu yue-hong zheng Bao Liu Yong-Jun Li Department of Vascular Surgery Beijing Hospital Peking Union Medical College and Chinese Academy of Medical Sciences Beijing 100730 China Department of Vascular Surgery Peking Union Medical College Hospital Peking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730 China

Background：The chimney/periscope technique has been used to address complex aortic *** study aimed to report the outcomes and experiences of chimney and/or periscope grafts （CPGs） used in the endovascular management of complex aortic ***：Twenty-two patients with complex aortic pathologies were retrospectively studied from January 2013 to August 2016 in two vascular centers of teaching *** patients were diagnosed using computed tomography angiography （CTA）.The patients were followed up at postoperative 1,3,6,and 12 months and yearly thereafter with X-ray,ultrasound,and/or ***：Twenty-two cases （17 males;mean age 60.7 ＆#177; 16.3 years） with complex aortic pathologies were *** patients underwent CPGs only,and the other three cases underwent the simultaneous implantation of chimney/periscope and fenestrated/scallop ***-six arteries were managed with forty CPGs during the *** angiographies revealed two Type Ⅰ endoleaks,one Type Ⅲ endoleak,and one Type Ⅳ *** intraoperative complications included brachial thrombosis,external iliac artery rupture,and left renal *** 30-day mortality was *** mean follow-up was 26.1 ＆#177; 10.1 months with a range of 2-39 *** the follow-up,two Type Ⅰ endoleaks and one Type Ⅳ endoleak were *** right renal stent occlusion occurred in the 5th month and turned patent after *** patients died during the follow-up,one due to an aneurysm rupture as a Type Ⅰ endoleak,and two due to myocardial *** instant technical success was 96%.The primary and secondary patencies were 92%and 96%,*** overall survival rates were 95%,84%,and 84% at 12,24,and 36 months,*** migration was not observed in any ***：Chimney/periscope techniques could be used to tackle complex aortic pathologies,but the indications must be strictly controlled,and additional experiences are required

关键词： Anetlrysm Chimney/Periscope Technique Complex Aortic Pathologies Dissection Endovascular Aortic Repair

Revascularization for Iliac-femoral Artery Pseudoaneurysm with Greater Saphenous Vein

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Chinese Medical Sciences Journal 2010年第1期25卷 57-60页

作者： Ji-dong Wu yue-hong zheng Nim Choi Furtado Rui Department of Vascular Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China Department of General Surgery Cir Gen/Vas Central Hospital Centre S. Januario Macao China

Objective To investigate the role of revascularization procedures with autologous greater saphenous vein in surgical management of iliac-femoral artery pseudoaneurysm in parenteral drug abusers. Methods Twenty-one patients with iliac-femoral artery pseudoaneurysm caused by parenteral drug abuse from 2004 to 2007 were enrolled. Among them,15 patients were male and 6 were female; their average age was 31.3 years. The size of pseudoaneurysms ranged from 3.0 cm to 7.5 cm. Common femoral artery and distal external iliac artery were often involved. We performed arterial reconstruction on these patients with autologous greater saphenous vein as a graft after excising iliac-femoral artery pseudoaneurysm through a single curved inguinal incision. All patients were followed up,and the complications were recorded. Results The surgical procedures were finished without intraoperative mortality or perioperative complications. All patients were free of claudication symptoms after the surgery except one case with preoperative popliteal artery stenosis. One case of infection and wound tissue fistula was found later. One case had inguinal incisional hematoma and another complained of numbness in thigh skin. Conclusions The use of autologous greater saphenous venous grafts for arterial reconstruction after pseudoaneurysm excision in drug abusers is safe and effective. This technique offers more advantages than arterial ligation alone without revascularization. An optimal greater saphenous venous graft is a prerequisite for revascularization.

关键词： pseudoaneurysm drug abuser bypass greater saphenous vein

Hybrid Endovascular Aorta Repair with Simultaneous Supra-aortic Branch or Iliac Branch Revascularization

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Chinese Medical Sciences Journal 2009年第3期24卷 182-185页

作者： yue-hong zheng Nim Choi hong-ru Deng CU Kouk Kun Yu Furtado Rui Department of Vascular Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China Department of General Surgery Central Hospital Conde S. Januario of Macao Caixa Postal 3002 Macao

Objective To describe a hybrid endovascular procedure for aorta repair with different kinds of bypass followed by concomitant placement of stent graft in the aorta. Methods From June 2007 to May 2008, 5 consecutive patients who presented with aortic aneurysm or dissection were treated with a new hybrid aorta repair technique. Complete surgical rerouting of supra-aortic vessels was simultaneously created by endovascular repair of aortic arch aneurysm with stent graft. Hybrid left carotid-subclavian bypass with stent graft deployment covering the ostium of the left subclavian artery was performed in a Debakey type III aortic dissection case. The supra-aortic branch was revascularized in 2 cases from ascending aorta to bilateral common carotid arteries using a 16-8 mm bifurcated graft, then total aortic arch and descending artery was occluded with stent-graft. The left carotid artery to the left subclavian artery bypass was created in 1 case, followed by stent-graft deployment. Two cases of infrarenal abdominal aortic aneurysm underwent left external iliac artery to left internal iliac artery bypass by a retroperineal route, then hybrid procedure was performed with bifurcated stent-graft. All stent grafts were deployed via a retrograde femoral artery approach in 5 patients. Results Technical success with complete aneurysmal exclusion was achieved in all patients. There was no incidence of encloleak. During a follow-up period of 2 to 10 months, documented perioperative neurologic events did not occur in all patients. One patient suffered from adult respiratory distress syndrome. After received tracheostomy, he recovered later. There was one death resulting from a postoperative myocar- dial infarction. Conclusion Hybrid arch repair provides an alternative therapy to patients otherwise considered prohibitively high risk for traditional open arch and thoracoabdominal aorta repair.

关键词： aortic aneurysm dissection surgery hybrid

Thoraco-abdominal Aorta Revascularization through a Retroperitoneal Approach

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Chinese Medical Sciences Journal 2010年第4期25卷 233-236页

作者： yue-hong zheng Kun Yu Jie-feng Zhang Nim Choi hong-ru Deng Furtado Rui Department of Vascular Surgery Peking Union Medical College Hospital ChineseAcademy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China Department of Extracorporeal Circulation Fuwai Hospital Beijing 100037 China Department of Vascular Surgery Weifang People＇s Hospital Shandong 261041 China Department of General Surgery Cir Gen/Vas Central Hospital Centre S. Januario Macao China

Objective To investigate the application of the retroperitoneal approach in aortic surgery. Methods We collected and analyzed data of 7 patients in Macao who presented with aortic diseases from 2007 to 2008 and were treated with aorta repair through retroperitoneal approach. Demographic features as well as intraoperative and postoperative data were analyzed. One case of thoracoabdominal aneurysm and 4 cases of abdominal aneurysm received artificial graft, among which hybrid iliac artery reconstruction with Zenith stent covering the ostium of the left subclavian artery was performed in 2 cases of infrarenal abdominal aneurysm. Aortic-iliac artery bypass was performed in 2 cases of aortoiliac occlusion. Results No operative or early postoperative death was observed. No perioperative intestinal adhesion or ureteral obstruction was found. One case reported delayed paraplegia and graft infection as postoperative complications. The complications were partially removed 3 months later after rehabilitation. Conclusion Retroperitoneal approach is a safe and feasible technique, which associated with a low incidence of postoperative pulmonary complications.

关键词： aorta retroperitoneal approach revascularization

Universal method for designing periodic orbits by homotopy classes in the elliptic restricted three-body problem

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Astrodynamics 2024年第1期8卷 175-188页

作者： yue zheng Min Zhao School of Electronic Engineering Xi’an Aeronautical InstituteXi’an710077China School of Aircraft Engineering Xi’an Aeronautical InstituteXi’an710077China School of Astronautics Northwestern Polytechnical UniversityXi’an710072China

The current methods for designing periodic orbits in the elliptic restricted three-body problem(ERTBP)have the disadvantages of targeting limited orbits and ergodic searches and considering only symmetric orbits.A universal method for designing periodic orbits is proposed in this ***,the homotopy classes of orbits are structured based on their topological ***,a dynamic model based on homotopy classes,ranging from the circular restricted three-body problem(CRTBP)to the ERTBP,can be built using the homotopy ***,a multi-and a single-period orbit were selected based on the resonance ***,the corresponding orbit in the ERTBP was computed by modifying the initial condition of the orbit in the *** method,without an ergodic search,can extend to any orbit,including an asymmetric orbit in the CRTBP,to the ERTBP model,and the two orbits are of the same homotopy *** of the Earth–Moon ERTBP are presented to verify the efficiency of this method.

关键词： periodic orbit elliptic restricted three-body problem(ERTBP) topology homotopy circular restricted three-body problem(CRTBP)

Performance improvement of β-Ga2O3 SBD-based rectifier with embedded microchannels in ceramic substrate

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Science China(Information Sciences) 2024年第5期67卷 341-342页

作者： Wen hong Chao ZHANG Fang ZHANG Xuefeng zheng Xiaohua MA yue HAO State Key Laboratory of Wide-Bandgap Semiconductor Devices and Integrated Technology School of MicroelectronicsXidian University

With the development of integrated circuits, there is a growing demand for higher power devices [1]. Gallium oxide（Ga2O3） holds promise for high power devices due to its wide bandgap and high breakdown electric field strength [2].However, its low thermal conductivity induces severe selfheating effects, limiting its performance and ***, effective thermal management techniques are urgently needed for Ga2O3devices.

关键词： Gallium compounds

Efficacy of Surgical Therapy for Carotid Body Tumors

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Chinese Medical Sciences Journal 2011年第4期26卷 241-245页

作者： Li-shan Lian Chang-wei Liu Heng Guan yue-hong zheng Xing-ming Chen Yong-jun Li Department of Vascular Surgery Peking Union Medical College Hospital ChineseAcademy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

Objective To evaluate the efficacy of surgical therapy for carotid body tumors. Methods A retrospective analysis was conducted, covering the diagnosis, surgical procedure, postoperative complications, and prognosis of 120 cases of carotid body tumors in Peking Union Medical College Hospital from 1949 to May, 2011. Results Surgical excision was successfully performed in 111 cases with 117 tumors. In all those cases, 50 underwent simple tumor resection, 42 underwent resection of tumors and ligation of the external carotid arteries, 7 underwent co-resection of tumors and common carotid arteries, internal carotid arteries, as well as external arteries without vascular reconstruction, and the other 12 cases experienced tumor resection and vascular reconstruction as internal carotid arteries were involved. After operation, 3 cases developed cerebral infarction, 30 cases showed cranial nerve palsy, including 15 cases of hypoglossal nerve damage, 10 cases of vagus paralysis, and 5 cases of Horner's syndrome. Conclusion It is essential to make a proper surgical strategy, which can reduce postoperative com- plications.

关键词： carotid body tumor surgical therapy postoperative complication

Preface to the“Theory and Applications of Flexoelectricity”Special Issue of Acta Mechanica Solida Sinica

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Acta Mechanica Solida Sinica 2024年第4期37卷 519-520页

作者： Qian Deng yue zheng Shengping Shen School of Aerospace Engineering Huazhong University of Science and TechnologyWuhan430074China School of Physics Sun Yat-sen UniversityGuangzhou510275China School of Aerospace Engineering Xi’an Jiaotong UniversityXi’an710049China

Flexoelectricity refers to the electric polarization generated by non-uniform mechanical strains within dielectric materials and *** intriguing effect bridges the fields of materials science,mechanical engineering,and applied physics,offering a promising avenue for innovation in sensor technology,energy harvesting,multiphysics field coupling,among others.

关键词： offering bridges harvesting

HetNets Under Decoupled Uplink and Downlink Access with UE Random Discontinuous Transmission: Local Delay and Energy Efficiency

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China Communications 2024年第3期21卷 205-216页

作者： Zhang yue zheng Fuchun Luo Jingjing School of Electronic and Information Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China

Due to the limited uplink capability in heterogeneousnetworks (HetNets), the decoupled uplinkand downlink access (DUDA) mode has recently beenproposed to improve the uplink performance. In thispaper, the random discontinuous transmission (DTX)at user equipment (UE) is adopted to reduce the interferencecorrelation across different time slots. By utilizingstochastic geometry, we analytically derive themean local delay and energy efficiency (EE) of an uplinkHetNet with UE random DTX scheme under theDUDA mode. These expressions are further approximatedas closed forms under reasonable *** results reveal that under the DUDA mode, there isan optimal EE with respect to mute probability underthe finite local delay constraint. In addition, with thesame finite mean local delay as under the coupled uplinkand downlink access (CUDA) mode, the HetNetsunder the DUDA mode can achieve a higher EE witha lower mute probability.

关键词： decoupled uplink and downlink access(DUDA) heterogeneous networks(HetNets) random discontinuous transmission(DTX) stochastic geometry