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Chimney

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https://www.readbyqxmd.com/read/28724734/hydrothermal-vent-fields-discovered-in-the-southern-gulf-of-california-clarify-role-of-habitat-in-augmenting-regional-diversity
#1
Shana K Goffredi, Shannon Johnson, Verena Tunnicliffe, David Caress, David Clague, Elva Escobar, Lonny Lundsten, Jennifer B Paduan, Greg Rouse, Diana L Salcedo, Luis A Soto, Ronald Spelz-Madero, Robert Zierenberg, Robert Vrijenhoek
Hydrothermal vent communities are distributed along mid-ocean spreading ridges as isolated patches. While distance is a key factor influencing connectivity among sites, habitat characteristics are also critical. The Pescadero Basin (PB) and Alarcón Rise (AR) vent fields, recently discovered in the southern Gulf of California, are bounded by previously known vent localities (e.g. Guaymas Basin and 21° N East Pacific Rise); yet, the newly discovered vents differ markedly in substrata and vent fluid attributes...
July 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28702712/evaluation-of-the-anticonvulsant-effect-of-brilliant-blue-g-a-selective-p2x7-receptor-antagonist-in%C3%A2-the-iv-ptz-maximal-electroshock-and-6%C3%A2-hz-induced-seizure-tests-in-mice
#2
Dorota Nieoczym, Katarzyna Socała, Piotr Wlaź
Epilepsy is one of the most common neurological disorders which is diagnosed in around 65 million people worldwide. Clinically available antiepileptic drugs fail to control epileptic activity in about 30% of patients and they are merely symptomatic treatments and cannot cure or prevent epilepsy. There remains a need for searching new therapeutic strategies for epileptic disorders. The P2X7 receptor has been recently investigated as a new target in epilepsy treatment. Preclinical studies revealed that P2X7 receptor antagonists have anticonvulsant properties in some models of epilepsy...
July 12, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28697941/early-outcomes-of-the-conformable-stent-graft-for-acute-complicated-and-uncomplicated-type-b-aortic-dissection
#3
Ting Zhu, Yi Si, Yuan Fang, Bin Chen, Jue Yang, Junhao Jiang, Jianing Yue, Weiguo Fu
OBJECTIVE: The objective of this study was to evaluate the safety, efficacy, and outcomes of the conformable thoracic endograft (Conformable TAG Thoracic Endoprosthesis [CTAG]; W. L. Gore & Associates, Flagstaff, Ariz) for acute complicated and uncomplicated type B aortic dissection (TBAD). METHODS: Between February and October 2016, 52 consecutive patients with acute complicated or uncomplicated TBAD were treated with a CTAG device. We assessed safety, complications, and device conformability using intraoperative angiography and computed tomography angiography...
July 8, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28697379/efficacy-and-evaluation-of-environmental-management-system-to-control-sandfly-vector-of-kala-azar
#4
D S Dinesh, S Kumari, F Hassan, V Kumar, V P Singh, P Das
The established vector for visceral leishmaniasis, Phlebotomus argentipes (Diptera: Psychodidae) breeds inside the human dwellings and cattle shed under crevices at the base of the wall. P. argentipes was controlled by plastering the base of wall (9″height × 9″base). The study was conducted in two phases: (i) Screening of plastering materials (ii) validation of the most suitable material. During the first phase (2014); four intervention materials were evaluated in four different arms: (i) cement (ii) brick chimney fly ash (BCFA i...
July 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28689945/chimney-stent-graft-repair-for-concurrent-inferior-mesenteric-artery-aneurysm-and-infra-renal-abdominal-aortic-aneurysm-case-report
#5
Zhen Wei Choo, Zhiwen Joseph Lo, Chun Hai Tan, Sundeep Punamiya, Sriram Narayanan
PURPOSE: To report a rare case of concurrent inferior mesenteric aortic (IMA) aneurysm and infra-renal abdominal aortic aneurysm (AAA) with a novel indication for the use of chimney-stent graft technique in this patient. CASE REPORT: 82-year-old man with an asymptomatic 4.4-cm fusiform AAA and 3.6-cm IMA aneurysm, coupled with chronic occlusion of celiac artery (CA) and superior mesenteric artery (SMA) at the ostia, underwent endovascular repair of both aneurysms...
July 6, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28668275/midterm-outcomes-and-evolution-of-gutter-area-after-endovascular-aneurysm-repair-with-the-chimney-graft-procedure
#6
Hector W L de Beaufort, Elena Cellitti, Quirina M B de Ruiter, Michele Conti, Santi Trimarchi, Frans L Moll, Constantijn E V B Hazenberg, Joost A van Herwaarden
OBJECTIVE: The objective of this study was to describe our experience with endovascular aneurysm repair (EVAR) with the use of chimney grafts for branch vessel preservation. METHODS: Patients treated with a chimney graft procedure between October 2009 and May 2015 were included for analysis. Patients who were not considered eligible for open surgical repair or for conventional, branched, or fenestrated endovascular repair were selected. A standardized operating procedure with left brachial or axillary artery cutdown access for the chimney grafts and bilateral femoral artery cutdown access for the aortic main device was used...
June 28, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28662925/the-best-in%C3%A2-vitro-conditions-for-two-and-three-parallel-stenting-during-endovascular-aneurysm-repair
#7
Gaspar Mestres, Xavier Yugueros, Ana Apodaka, Rodrigo Urrea, Savino Pasquadibisceglie, Xavier Alomar, Vincent Riambau
OBJECTIVE: The aim of this study is to identify which endograft-parallel stent combinations and which degree of oversizing result in the most adequate fit in a juxtarenal abdominal aneurysmal neck, when using a double or triple parallel-stent (chimney) technique. METHODS: In vitro silicon, juxtarenal, abdominal aortic aneurysmal neck models of different diameters, with two and three side-branches (simulating both the renal and superior mesenteric arteries), were constructed...
June 26, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28659873/microbial-community-structure-of-deep-sea-hydrothermal-vents-on-the-ultraslow-spreading-southwest-indian-ridge
#8
Jian Ding, Yu Zhang, Han Wang, Huahua Jian, Hao Leng, Xiang Xiao
Southwest Indian Ridge (SWIR) is a typical oceanic ultraslow spreading ridge with intensive hydrothermal activities. The microbial communities in hydrothermal fields including primary producers to support the entire ecosystem by utilizing geochemical energy generated from rock-seawater interactions. Here we have examined the microbial community structures on four hydrothermal vents from SWIR, representing distinct characteristics in terms of temperature, pH and metal compositions, by using Illumina sequencing of the 16S small subunit ribosomal RNA (rRNA) genes, to correlate bacterial and archaeal populations with the nature of the vents influenced by ultraslow spreading features...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28655449/chimney-reconstruction-of-the-aortic-arch-in-the-norwood-procedure
#9
Satoshi Asada, Masaaki Yamagishi, Keiichi Itatani, Hitoshi Yaku
No abstract text is available yet for this article.
May 23, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28651454/chimney-technique-in-supra-aortic-branch-reconstruction-in-china-a-systematic-and-critical-review-of-chinese-published-experience
#10
Yang Zhao, Yawei Shi, Mian Wang, Jin Cui, Yitian Chen, Liang Zheng, Henghui Yin, Guangqi Chang
BACKGROUND: The chimney graft (CG) technique has been proposed as a complete endovascular supra-aortic branch reconstruction for aortic pathologies. Due to the rapid growth of thoracic endovascular aortic repair (TEVAR) in China, we aimed to investigate the current data of the CG technique in this most populous country. METHODS: Studies of supra-aortic branch reconstruction using the CG technique from Chinese centers were collected and analyzed. RESULTS: A total of 294 patients from Chinese centers who underwent TEVAR with CGs were included...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28647036/supra-aortic-interventions-for-endovascular-exclusion-of-the-entire-aortic-arch
#11
REVIEW
Terézia B Andrási, Marius Grossmann, Dieter Zenker, Bernhard C Danner, Friedrich A Schöndube
OBJECTIVE: Our aim was to analyze the outcomes of endovascular exclusion of the entire aortic arch (proximal landing in zone 0, distal landing in zone III or beyond, after Ishimaru) in which complete surgical debranching of the supra-aortic vessels (I), endovascular supra-aortic revascularization (chimney, fenestrated, or branched grafts) with partial surgical debranching (II), or total endovascular supra-aortic revascularization (III) was additionally performed. METHODS: Publications describing endovascular repair of the aortic arch (2000-2016) were systematically searched and reviewed...
July 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28630240/port-site-endometrioma-a-rare-cause-of-abdominal-wall-pain-following-laparoscopic-surgery
#12
Zohaib A Siddiqui, Fahd Husain, Zain Siddiqui, Midhat Siddiqui
Endometriomas are a rare cause of abdominal wall pain. We report a case of a port site endometrioma presenting with an umbilical swelling. The patient underwent a laparoscopy for pelvic endometriosis 6 months previously and presented with a swelling around her umbilical port site scar associated with cyclical pain during menses. Ultrasound scan reported a well-defined lesion in the umbilicus and MRI scanning excluded other pathology. As she was symptomatic, she underwent an exploration of the scar and excision of the endometrioma with resolution of her symptoms...
June 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28623101/a-good-chimney-requires-a-good-sweep
#13
EDITORIAL
Viktor Hraska, Ronald K Woods
No abstract text is available yet for this article.
May 25, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28602579/chimney-endovascular-reconstruction-of-the-aortic-bifurcation-ch-erab-for-aorto-iliac-occlusive-disease-allows-inferior-mesenteric-arterial-preservation
#14
A Chaudhuri, R Dey
No abstract text is available yet for this article.
June 8, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28602114/combination-of-chimneys-and-fenestrated-endografts-in-the-treatment-of-complex-aortic-aneurysms
#15
Caroline Caradu, Julien Morin, Dominique Midy, Sandro Lepidi, Eric Ducasse
PURPOSE: To present early results of fenestrated endovascular aneurysm repair (FEVAR) combined with chimney grafts in a high-volume center. METHODS: From July 2011 to July 2016, 45 patients (mean age 73.0±8.8 years; 39 men) with complex aneurysms who were poor candidates for open repair and anatomically ineligible for standard or custom-made FEVAR were treated with chimney FEVAR (chFEVAR). Eight (18%) cases were treated in emergency. In all, 130 target vessels (2...
June 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28592079/-endovascular-aortic-repair-of-abdominal-aortic-aneurysm-of-short-neck-with-endurant-stent-graft
#16
Y G Wang, Z Y Shi, W G Fu, D Q Guo, X Xu, B Chen, J H Jiang, J Yang, T Zhu, Z H Dong, Y Shi, L X Wang, X Tang, J N Yue
Objective: To evaluate the safety and effectiveness of the Endurant stent graft for abdominal aortic aneurysm cases with proximal neck length <10 mm. Methods: This study was a retrospective analysis. From January 2010 to May 2015, 22 consecutive abdominal aortic aneurysm patients with proximal neck length <10 mm were treated with endovascular aortic repair by Endurant stent graft in Department of Vascular Surgery, Zhongshan Hospital, Fudan University. There were 19 (86.3%) male cases, aging from 57 to 84 years...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28583728/conical-neck-is-strongly-associated-with-proximal-failure-in-standard-endovascular-aneurysm-repair
#17
Georgios A Pitoulias, Andrés Reyes Valdivia, Suteekhanit Hahtapornsawan, Giovanni Torsello, Apostolos G Pitoulias, Martin Austermann, Claudio Gandarias, Konstantinos P Donas
OBJECTIVE: Hostile proximal aortic neck (HN) challenges the suitability for standard endovascular aneurysm repair (EVAR) of patients at high risk for "open" repair. However, there has been little if any focus placed on the individual role of the "nonlength" HN features in EVAR outcomes. The aim of this study was to evaluate their individual and potentially predictive role in outcomes of EVAR under HN conditions. METHODS: Data of 156 consecutive EVAR patients with short (<15 mm) HN, treated with the Endurant device (Medtronic Cardiovascular, Santa Rosa, Calif) at three European academic vascular centers between 2007 and 2015, were collected and retrospectively analyzed...
June 2, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28548474/aortic-aneurysm-endovascular-treatment-with-the-parallel-graft-technique-from-the-aortic-arch-to-the-iliac-axis
#18
Gian F Fadda, Mario Marino, Holta Kasemi, Costantino L DI Angelo, Carlo P Dionisi, Valeria Cammalleri, Carlo Setacci
BACKGROUND: The chimney technique has been developed for the treatment of complex aortic aneurysms. We analyzed the midterm to long-term outcomes of this approach from a single- centre experience. METHODS: From October 2008 to July 2016, 58 patients underwent endovascular aortic aneurysm repair using the chimney technique. Indications for treatment were thoracic aortic aneurysm (TAA) (n = 11), thoracoabdominal aortic aneurysm (TAAA) (n = 2), pararenal aortic aneurysm (PAAA) (n= 15), aortoiliac/isolated hypogastric artery aneurysm (n = 25), type I endoleak after previous TEVAR/EVAR (n=4), proximal pseudoaneurysm after AAA open repair (n = 1)...
May 26, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28535733/access-from-above-bailout-solution-for-intraoperative-distal-migration-of-abdominal-aortic-stent-graft
#19
Dimitrij Kuhelj, Jernej Avsenik, Dašmir Nuredini
The majority of the ruptured abdominal aortic aneurysms today is treated endovascularly. In cases with short aneurysm neck, chimney technique can be used to extend landing zone in emergency setting. Additionally, the repositioning ability of C3 delivery system (Gore & Associates) allows better positioning in cases with challenging anatomy. In our experience, proximal reposition of partially deployed device can be problematic in some patients. We present a case of endovascular repair of ruptured abdominal aortic aneurysm using chimney technique where proximal reposition was achieved by snaring the aortic device via axillary access...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28528715/embolization-for-persistent-type-ia-endoleaks-after-chimney-endovascular-aneurysm-repair-with-onyx-%C3%A2
#20
C Marcelin, Y Le Bras, F Petitpierre, D Midy, N Grenier, E Ducasse, F Cornélis
PURPOSE: The purpose of this study was to determine retrospectively the safety and technical success rate of embolization using ethylene vinyl alcohol copolymer (Onyx(®)) for persistent type 1A endoleaks after chimney endovascular aneurysm repair (EVAR) for complex aortic aneurysms. MATERIAL AND METHODS: Nine consecutive patients (6 men, 3 women) with a mean age of 78.6 years (range: 62-87 years) presenting with persistent type IA endoleaks after chimney EVAR and an increase of aneurysm size were treated using transarterial embolization with Onyx(®)...
May 18, 2017: Diagnostic and Interventional Imaging
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