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https://www.readbyqxmd.com/read/28227425/mechanical-performances-of-endovascular-aneurysm-repair-strategies-with-main-aortic-and-chimney-grafts
#1
Wei-Ling Chen, Bing-Feng Huang, Ming-Long Yeh, Chung-Dann Kan, Wei-Ling Chen, Bing-Feng Huang, Ming-Long Yeh, Chung-Dann Kan, Ming-Long Yeh, Bing-Feng Huang, Chung-Dann Kan, Wei-Ling Chen
The use of endovascular aneurysm repair (EVAR) strategies for the treatment of complex aortic pathologies is a major area of investigation in modern surgery. EVAR strategies using fenestrated or branched devices provide alternatives to open surgery for patients with aortic pathologies with visceral branch involvement, but their applications have some major limitations. To extend endovascular repair to patients whose anatomy is unfit for branched or fenestrated stent grafts or open repair, parallel graft techniques using chimney grafts (CGs) have been proposed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28219557/total-endovascular-repair-of-post-dissection-aortic-arch-aneurysm-with-chimney-technique
#2
Wei-Tao Liang, Su Wang, Jian Zhou, Chen-Jun Han, Qiang Liu, Xiao-Yun Wu, Wang-Fu Zang
Open surgery remains the standard procedure for treatment of aortic arch pathologies. However, total endovascular repair can be a safe option for patients who are poor candidates for surgery because of compromised physiology. We report the case of a 63-year-old man with a post-dissection aortic arch aneurysm. We repaired the aneurysm using thoracic endovascular aortic repair (TEVAR) and used the chimney technique to reconstruct the supra-aortic branches. The patient is doing well after 12-month follow-up, demonstrating that TEVAR with the chimney technique can be used successfully for the treatment of post-dissection arch aneurysm...
March 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28216358/outcomes-of-thoracic-endovascular-aortic-repair-using-aortic-arch-chimney-stents-in-high-risk-patients
#3
Igor Voskresensky, Salvatore T Scali, Robert J Feezor, Javairiah Fatima, Kristina A Giles, Rosamaria Tricarico, Scott A Berceli, Adam W Beck
BACKGROUND: Aortic arch disease is a challenging clinical problem, especially in high-risk patients, in whom open repair can have morbidity and mortality rates of 30% to 40% and 2% to 20%, respectively. Aortic arch chimney (AAC) stents used during thoracic endovascular aortic repair (TEVAR) are a less invasive treatment strategy than open repair, but the current literature is inconclusive about the role of this technology. The focus of this analysis is on our experience with TEVAR and AAC stents...
February 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28202812/three-dimensional-trajectories-and-network-analyses-of-group-behaviour-within-chimney-swift-flocks-during-approaches-to-the-roost
#4
Dennis J Evangelista, Dylan D Ray, Sathish K Raja, Tyson L Hedrick
Chimney swifts (Chaetura pelagica) are highly manoeuvrable birds notable for roosting overnight in chimneys, in groups of hundreds or thousands of birds, before and during their autumn migration. At dusk, birds gather in large numbers from surrounding areas near a roost site. The whole flock then employs an orderly, but dynamic, circling approach pattern before rapidly entering a small aperture en masse We recorded the three-dimensional trajectories of ≈1 800 individual birds during a 30 min period encompassing flock formation, circling, and landing, and used these trajectories to test several hypotheses relating to flock or group behaviour...
February 22, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28197130/mineralizing-filamentous-bacteria-from-the-prony-bay-hydrothermal-field-give-new-insights-into-the-functioning-of-serpentinization-based-subseafloor-ecosystems
#5
Céline Pisapia, Emmanuelle Gérard, Martine Gérard, Léna Lecourt, Susan Q Lang, Bernard Pelletier, Claude E Payri, Christophe Monnin, Linda Guentas, Anne Postec, Marianne Quéméneur, Gaël Erauso, Bénédicte Ménez
Despite their potential importance as analogs of primitive microbial metabolisms, the knowledge of the structure and functioning of the deep ecosystems associated with serpentinizing environments is hampered by the lack of accessibility to relevant systems. These hyperalkaline environments are depleted in dissolved inorganic carbon (DIC), making the carbon sources and assimilation pathways in the associated ecosystems highly enigmatic. The Prony Bay Hydrothermal Field (PHF) is an active serpentinization site where, similar to Lost City (Mid-Atlantic Ridge), high-pH fluids rich in H2 and CH4 are discharged from carbonate chimneys at the seafloor, but in a shallower lagoonal environment...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28169221/gaussian-plume-atmospheric-modelling-and-radiation-exposure-calculations-following-the-cremation-of-a-deceased-thyroid-cancer-patient-treated-with-iodine-131
#6
Phillipe J Calais
Shortly after treatment with 7200 MBq of (131)I, a thyroid cancer patient died and was subsequently cremated. Calculations of the atmospheric emissions of (131)I from the crematorium flue were performed using a standard atmospheric pollution Gaussian Plume Dispersal model. Estimates of whole-body and thyroid dose of those potentially exposed were made using OLINDA/EXM dosimetry software. Under the meteorological conditions prevalent at the time of the cremation, and depending on the actual release rate of the (131)I, the Western Australian legal limit of 3...
February 7, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28161566/monocentric-evaluation-of-chimney-versus-fenestrated-endovascular-aortic-repair-for-juxta-renal-abdominal-aortic-aneurysm
#7
Caroline Caradu, Julien Morin, Mathieu Poirier, Dominique Midy, Eric Ducasse
BACKGROUND: With approval of on-label fenestrated (F-) endovascular aortic repair (EVAR), concerns regarding long-term patency and endoleaks (ELs) after chimney graft (CG)-EVAR were raised. To add supportive data on the value of this technique, we chose to report the mid-term results of CG-EVAR in a single center with standardized methods and to compare them to F-EVAR. METHODS: A retrospective analysis of prospectively gathered data from January 2010 to January 2015 was conducted and patients with excessive comorbidities for open repair treated by CG-EVAR or F-EVAR were included...
February 1, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28128541/fenestrated-and-chimney-endovascular-aneurysm-repair-versus-open-surgery-for-complex-abdominal-aortic-aneurysms
#8
Vicente A Sala-Almonacil, José M Zaragozá-García, Mauricio Ramírez-Montoya, Vicente Molina-Nácher, Inmaculada Martínez-Perelló, Francisco J Gómez-Palonés
BACKGROUND: Many patients with complex abdominal aortic aneurysms are unfit for open repair. New endovascular technologies and bailout techniques are being used for managing those complex anatomies. The purpose of this study is to compare the results obtained with advanced endovascular aneurysm repair techniques (fenestrated and chimney endografts) to those obtained with open repair for the treatment of complex abdominal aortic aneurysms not anatomically suitable for standard endovascular exclusion (infrarenal neck <10 mm, juxtarenal, suprarenal and Crawford's type IV thoracoabdominal aneurysms)...
January 27, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28115801/review-of-treatment-for-thoracoabdominal-aortic-aneurysm-and-the-modern-experience-of-multi-branched-endograft-in-taiwan
#9
REVIEW
Ting Chao Lin, Chun Che Shih
Thoracoabdominal aortic aneurysm (TAAA) is a complicated aortic disease. Most treatments for other aortic aneurysms have already shifted from conventional open surgery to endovascular operation; but for TAAA, open surgery remains the gold standard treatment. Several alternative treatments such as hybrid operation as well as endovascular techniques are utilized for the treatment of TAAA. Some of the procedures combine off-the-shelf devices such as the chimney procedure. Some other procedures required custom-made specialized stent grafts...
January 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/28097196/chimney-technique-with-nellix-endovascular-aneurysm-sealing-system-in-a-patient-with-single-kidney-and-juxtarenal-abdominal-aortic-aneurysm
#10
Kaspars Kisis, Janis Savlovskis, Marcis Gedins, Natalija Ezite, Edgars Zellans, Dainis Krievins
We present a saccular asymptomatic juxtarenal abdominal aortic aneurysm in a 70-year-old male with a very short left renal artery supplying the only kidney. The case was successfully treated with the Nellix EndoVascular Aneurysm Sealing system combined with a chimney technique.
August 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28094028/annual-10-month-aerial-life-phase-in-the-common-swift-apus-apus
#11
Anders Hedenström, Gabriel Norevik, Kajsa Warfvinge, Arne Andersson, Johan Bäckman, Susanne Åkesson
The common swift (Apus apus) is adapted to an aerial lifestyle, where food and nest material are captured in the air. Observations have prompted scientists to hypothesize that swifts stay airborne for their entire non-breeding period [1, 2], including migration into sub-Saharan Africa [3-5]. It is mainly juvenile common swifts that occasionally roost in trees or buildings before autumn migration when weather is bad [1, 6]. In contrast, the North American chimney swift (Chaetura pelagica) and Vaux's swift (C...
November 21, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/28087214/three-vessel-chimney-technique-combined-with-endovascular-aortic-sealing-device-for-the-treatment-of-a-type-ia-endoleak
#12
A Quintas, G Alves
No abstract text is available yet for this article.
January 10, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28078797/in-situ-incubation-of-iron-sulfur-mineral-reveals-a-diverse-chemolithoautotrophic-community-and-a-new-biogeochemical-role-for-thiomicrospira
#13
Roman A Barco, Colleen L Hoffman, Gustavo A Ramírez, Brandy M Toner, Katrina J Edwards, Jason B Sylvan
Sulfide mineral precipitation occurs at mid-ocean ridge (MOR) spreading centers, both in the form of plume particles and seafloor massive sulfide structures. A common constituent of MOR is the iron-bearing sulfide mineral pyrrhotite, which was chosen as a substrate for in-situ incubation studies in shallow waters of Catalina Island, CA to investigate the colonization of iron-oxidizing bacteria. Microbial community datasets were obtained from in-situ incubated pyrrhotite, allowing for direct comparison to microbial communities of iron-sulfides from active and inactive chimneys in deep-sea environments...
January 12, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28078050/complete-genome-sequence-of-lutibacter-profundi-lp1-t-isolated-from-an-arctic-deep-sea-hydrothermal-vent-system
#14
Juliane Wissuwa, Sven Le Moine Bauer, Ida Helene Steen, Runar Stokke
Lutibacter profundi LP1(T) within the family Flavobacteriaceae was isolated from a biofilm growing on the surface of a black smoker chimney at the Loki's Castle vent field, located on the Arctic Mid-Ocean Ridge. The complete genome of L. profundi LP1(T) is the first genome to be published within the genus Lutibacter. L. profundi LP1(T) consists of a single 2,966,978 bp circular chromosome with a GC content of 29.8%. The genome comprises 2,537 protein-coding genes, 40 tRNA species and 2 rRNA operons. The microaerophilic, organotrophic isolate contains genes for all central carbohydrate metabolic pathways...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/28057131/-interaction-between-smoking-and-indoor-air-pollution-on-chronic-obstructive-pulmonary-diseases
#15
D X Pan, Y J Qian, C M Wang, Y Guo, Z Bian, K X Xie, L L Chen, Y D Zhang, Q Y Li
Objective: To investigate the prevalence of chronic obstructive pulmonary diseases (COPD) in Tongxiang, Zhejiang province, and analyze the interaction between smoking and indoor air pollution on COPD. Methods: Townships of Chongfu, Zhouquan, Gaoqiao, Shimen, Wuzhen were randomly selected from Tongxiang. All the local people aged 30-79 years were asked to receive questionnaire survey, physical examination and pulmonary function testing. FEV1max/FVC max≤0.7 was the criterion of COPD diagnosis. Logistic regression model was used to analyze the relationship between smoking/indoor air pollution and COPD, multiplied interaction between smoking and indoor air pollution was evaluated, Excel table prepared by Andersson et al...
November 10, 2016: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28042763/anatomical-suitability-of-the-zenith-off-the-shelf-p-branch-endograft-in-juxtarenal-aortic-aneurysms-previously-treated-using-the-chimney-technique
#16
Martin Schroeder, Konstantinos P Donas, Konstantinos Stavroulakis, Arne Stachmann, Giovanni Torsello, Theodosios Bisdas
PURPOSE: To examine the suitability of the Zenith off-the-shelf (p-branch) endograft in patients with juxta- or pararenal abdominal aortic aneurysms (J/PRAA) previously treated with endovascular aneurysm repair incorporating the chimney technique (chEVAR). METHODS: Between January 2012 and December 2014, high-resolution computed tomography angiograms and clinical data from 50 patients (mean age 79 years; 45 men) with J/PRAAs treated with chEVAR were retrospectively reviewed...
December 1, 2016: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28031676/new-chimney-after-chimney-evar-for-the-treatment-of-type-ia-endoleak
#17
Spyridon N Mylonas, Konstantinos G Moulakakis, John D Kakisis, Elias N Brountzos, Christos D Liapis
The chimney graft (CG) technique can be a useful alternative in treating aortic aneurysms with challenging anatomy, regarding the proximal sealing zone. We describe the case of a patient who developed a type Ia endoleak after chimney endovascular aneurysm repair for a juxtarenal AAA and underwent a proximal CG reconfiguration and implantation of an aortic cuff. The crossing configuration of the CGs should be avoided as it may compromise the circumferential apposition of the endograft and impede the thrombosis of the perigraft gutters...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28031661/percutaneous-in-situ-left-subclavian-artery-fenestration-using-reentry-catheter-during-endovascular-thoracic-aortic-aneurysm-repair
#18
Tze-Woei Tan, Amy H Coulter, Wayne W Zhang
Left subclavian artery (LSA) revascularization is recommended during elective thoracic endovascular aortic aneurysm repair (TEVAR) when coverage is required for adequate proximal seal. Reported method for LSA revascularization includes open bypass, covered stent placement using chimney technique, and in situ laser fenestration. We reported a novel technique using percutaneous Outback reentry device for LSA revascularization in a 68-year-old male patient who underwent TEVAR for a 9-cm thoracic aortic aneurysm...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28025648/functional-assessment-of-the-hautmann-ileal-neobladder-with-chimney-modification-using-uroflowmetry-and-a-questionnaire
#19
Yong Seong Lee, Ha Bum Jung, Don Kyoung Choi, Sung Tae Cho, Ki Kyung Kim, Young Goo Lee
Urinary diversion reconstruction is essential after radical cystectomy and neobladder reconstruction is accepted as a fine option. This study included 51 patients, who underwent radical cystectomy with orthotopic neobladder reconstruction by a Hautmann ileal neobladder with chimney modification from 2006 to 2014. Functional outcomes were evaluated using a questionnaire and uroflowmetry. Perioperative complications were analyzed retrospectively. The mean follow-up period was 36.1 months. Eighty-six percent of patients voided without clean intermittent catheterization (CIC) assistance...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27989317/extended-use-of-endovascular-aneurysm-sealing-chimneys-for-juxtarenal-aneurysms
#20
REVIEW
K M Stenson, J L De Bruin, P J E Holt, I M Loftus, M M Thompson
Hostile infrarenal aortic neck anatomy presents a challenge for the endovascular treatment of abdominal aortic aneurysm. Open surgical repair has been seen as the gold standard treatment for juxtarenal abdominal aortic aneurysm; however, endovascular techniques are now becoming more prevalent, particularly in patients deemed high risk for morbidity and mortality with open repair. The morphology of an aneurysm is a determinant of long-term outcomes, and short aneurysm necks are associated with poorer outcomes and a higher rate of secondary reinterventions...
September 2016: Seminars in Vascular Surgery
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