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https://www.readbyqxmd.com/read/28774222/transradial-delivery-of-a-renal-snorkel-during-complex-endovascular-aortic-aneurysm-repair
#1
Jordan R Stern, Sharif H Ellozy
Transradial access has been described in a variety of clinical contexts but has been rarely utilized for visceral artery interventions and during complex endovascular aortic aneurysm repair (EVAR) when upper extremity access is required. This is usually accomplished via brachial artery access, and although brachial access is generally safe and effective, radial access may offer some benefits with regard to patient comfort and potential complications. Here we report a case of successful delivery of a renal snorkel via a radial artery approach during EVAR...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28739454/parallel-grafts-used-in-combination-with-physician-modified-fenestrated-stent-grafts-for-complex-aortic-aneurysms-in-high-risk-patients-with-hostile-anatomies
#2
Joseph Touma, Dorian Verscheure, Marek Majewski, Pascal Desgranges, Frederic Cochennec
OBJECTIVE: To evaluate the feasibility and early outcomes of complex aortic aneurysm repair in high risk patients with hostile anatomies using both parallel stents and physician-modified stent-graft (PMSG) techniques to address the renovisceral arteries METHODS: Consecutive patients with complex suprarenal (SRA) and thoracoabdominal aortic aneurysms (TAAA) undergoing endovascular repair using combined parallel stents technique and PMSG between September 2013 and November 2015 were evaluated...
July 21, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28700927/charged-antimicrobial-peptides-can-translocate-across-membranes-without-forming-channel-like-pores
#3
Jakob P Ulmschneider
How can highly charged, cationic antimicrobial peptides (AMPs) translocate across hydrophobic lipid bilayers despite the prohibitive energetic penalty to do so? A common explanation has been the formation of peptide-lined channels. However, for most AMPs, no structures of membrane pores have been found despite clear evidence of membrane leakage and antimicrobial activity. The study here suggests an alternative and simple reason: for the AMP PGLa from Xenopus laevis (charge +5), such pores are not needed to explain both leakage and peptide translocation...
July 11, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28689952/a-novel-off-the-shelf-technique-for-endovascular-repair-of-type-iii-and-iv-thoracoabdominal-aortic-aneurysms-using-the-gore-excluder-and-viabahn-branches
#4
Mathew Wooster, Adam Tanious, R Wesley Jones, Paul Armstrong, Murray Shames
OBJECTIVE: To describe the use of a novel off-the-shelf technique to repair type III and type IV thoracoabdominal aortic aneurysms (TAAA) in absence of available prefabricated branched devices. METHODS: All patients undergoing endovascular repair of type III and IV TAAAs using this technique were included from a prospectively maintained registry at a regional aortic referral center. The proximal bifurcated Gore C3 Excluder device is positioned in the descending thoracic aorta with the contralateral gate 2-3 cm above the celiac artery...
July 6, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28688876/concomitant-coil-embolization-for-gutter-leak-during-endovascular-aortic-repair-with-the-snorkel-technique
#5
Koji Maeda, Takao Ohki, Yuji Kanaoka, Takeshi Baba, Masahiro Tezuka, Hikaru Nakagawa
Snorkel endovascular aortic repair (SEVAR) is reported to be effective for the treatment of pararenal or juxtarenal aortic aneurysms. SEVAR can be performed with an off-the-self device, which is applied for emergency cases. However, there is a concern that SEVAR lead to gutter leak due to insertion of multiple stents. Previously, we performed two-staged treatment for gutter leak after SEVAR. However, the gutter leaks can also occur late and it is often difficult to close. Therefore, if a significant gutter leak is identified intraoperatively, performing concomitant gutter coil embolization at the time of the initial surgery may be reasonable...
July 6, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28611751/cable-bacteria-and-the-bioelectrochemical-snorkel-the-natural-and-engineered-facets-playing-a-role-in-hydrocarbons-degradation-in-marine-sediments
#6
Bruna Matturro, Carolina Cruz Viggi, Federico Aulenta, Simona Rossetti
The composition and metabolic traits of the microbial communities acting in an innovative bioelectrochemical system were here investigated. The system, known as Oil Spill Snorkel, was recently developed to stimulate the oxidative biodegradation of petroleum hydrocarbons in anoxic marine sediments. Next Generation Sequencing was used to describe the microbiome of the bulk sediment and of the biofilm growing attached to the surface of the electrode. The analysis revealed that sulfur cycling primarily drives the microbial metabolic activities occurring in the bioelectrochemical system...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28542802/comparison-of-nine-different-methods-to-assess-fish-communities-in-lentic-flood-plain-habitats
#7
M Mueller, J Pander, J Knott, J Geist
This study compares the effectiveness and representativeness of electrofishing, snorkelling, seining, baited lift netting, multi-mesh gillnetting, baited fish traps, fyke netting, angling and longline fishing, considering three typical lentic flood-plain habitats at different times of day. Electrofishing was by far the most effective method yielding highest species richness, species trait representation and catch per unit of effort (CPUE), followed by seining. For single species like dace Leuciscus leuciscus, European ruffe Gymnocephalus cernua, common bream Abramis brama and silver bream Blicca bjoerkna, seining was more effective than electrofishing...
May 22, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28482368/validity-of-postexercise-measurements-to-estimate-peak-vo2-in-200-m-and-400-m-maximal-swims
#8
Ferran A Rodríguez, Diego Chaverri, Xavier Iglesias, Thorsten Schuller, Uwe Hoffmann
To assess the validity of postexercise measurements to estimate oxygen uptake (V˙O2) during swimming, we compared V˙O2 measured directly during an all-out 200-m swim with measurements estimated during 200-m and 400-m maximal tests using several methods, including a recent heart rate (HR)/V˙O2 modelling procedure. 25 elite swimmers performed a 200-m maximal swim where V˙O2 was measured using a swimming snorkel connected to a gas analyzer. The criterion variable was V˙O2 in the last 20 s of effort, which was compared with the following V˙O2peak estimates: 1) first 20-s average; 2) linear backward extrapolation (BE) of the first 20 and 30 s, 3×20-s, 4×20-s, and 3×20-s or 4×20-s averages; 3) semilogarithmic BE at the same intervals; and 4) predicted V˙O2peak using mathematical modelling of 0-20 s and 5-20 s during recovery...
June 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28479422/management-of-difficult-access-during-evar
#9
Yana Etkin, Asad Baig, Paul J Foley, Grace J Wang, Edward Y Woo, Jeffrey P Carpenter, Ronald M Fairman, Benjamin M Jackson
OBJECTIVES: To describe a large single institutional experience in managing challenging access situations during endovascular aneurysm repair (EVAR). METHODS: Data from all patients undergoing EVAR at a tertiary academic medical center between 2009 and 2013 was collected retrospectively, including demographics, size of iliac arteries, type of device used, approach to managing difficult access, and outcomes. The median follow-up was 38 months. Difficult access (DA) was defined as iliac arteries with a diameter of less than 7mm bilaterally...
May 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28475965/how-could-discharge-management-affect-florida-spring-fish-assemblage-structure
#10
Kirsten Work, Keneil Codner, Melissa Gibbs
Freshwater bodies are increasingly affected by reductions in water quantity and quality and by invasions of exotic species. To protect water quantity and maintain the ecological integrity of many water bodies in central Florida, a program of adopting Minimum Flows and Levels (MFLs) has begun for both lentic and lotic waters. The purpose of this study was to determine whether there were relationships between discharge and stage, water quality, and biological parameters for Volusia Blue Spring, a first magnitude spring (discharge > 380,000 m(3) day(-1) or 100 mgd) for which an MFL program was adopted in 2006...
May 2, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28464277/forensic-case-reports-presenting-immersion-pulmonary-edema-as-a-differential-diagnosis-in-fatal-diving-accidents
#11
Julie Vinkel, Peter Bak, Peter Juel Thiis Knudsen, Ole Hyldegaard
Immersion Pulmonary Edema (IPE) reduces the transport of gases over the respiratory membrane due to edema in the interstitium and respiratory zones. IPE has previously been described in both swimmers and divers, with a few known fatal cases. We have reviewed 42 SCUBA and snorkeling-related drowning deaths, and through a thorough analysis of each case, including both diving physiology and forensic pathology, we present IPE as a differential diagnosis to drowning in four cases. Our findings propose that; absence of watery content in the stomach and conducting airways, and liquid filled lungs without hyperexpansion, may be compatible with IPE...
May 2, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28460755/-snorkel-lice-barrier-technology-reduced-two-co-occurring-parasites-the-salmon-louse-lepeophtheirus-salmonis-and-the-amoebic-gill-disease-causing-agent-neoparamoeba-perurans-in-commercial-salmon-sea-cages
#12
D W Wright, L H Stien, T Dempster, T Vågseth, V Nola, J-E Fosseidengen, F Oppedal
Diverse chemical-free parasite controls are gaining status in Atlantic salmon sea-cage farming. Yet, the intricacies of their use at commercial scale, including effects on co-occurring parasites, are seldom reported. A new salmon lice prevention method involves installing a deep net roof and 'snorkel' lice barrier in cages to shelter salmon from free-living infective larvae which concentrate at shallow depths, and allows salmon to jump and re- inflate their buoyancy-regulating swim bladder by swallowing air...
May 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28409218/transmembrane-helices-containing-a-charged-arginine-are-thermodynamically-stable
#13
Martin B Ulmschneider, Jakob P Ulmschneider, J Alfredo Freites, Gunnar von Heijne, Douglas J Tobias, Stephen H White
Hydrophobic amino acids are abundant in transmembrane (TM) helices of membrane proteins. Charged residues are sparse, apparently due to the unfavorable energetic cost of partitioning charges into nonpolar phases. Nevertheless, conserved arginine residues within TM helices regulate vital functions, such as ion channel voltage gating and integrin receptor inactivation. The energetic cost of arginine in various positions along hydrophobic helices has been controversial. Potential of mean force (PMF) calculations from atomistic molecular dynamics simulations predict very large energetic penalties, while in vitro experiments with Sec61 translocons indicate much smaller penalties, even for arginine in the center of hydrophobic TM helices...
April 13, 2017: European Biophysics Journal: EBJ
https://www.readbyqxmd.com/read/28390918/dynamic-geometric-analysis-of-the-renal-arteries-and-aorta-following-complex-endovascular-aneurysm-repair
#14
Brant W Ullery, Ga-Young Suh, John J Kim, Jason T Lee, Ronald L Dalman, Christopher P Cheng
BACKGROUND: Aneurysm regression and target vessel patency during early and mid-term follow-up may be related to the effect of stent-graft configuration on the anatomy. We quantified geometry and remodeling of the renal arteries and aneurysm following fenestrated (F-) or snorkel/chimney (Sn-) endovascular aneurysm repair (EVAR). METHODS: Twenty-nine patients (mean age, 76.8 ± 7.8 years) treated with F- or Sn-EVAR underwent computed tomography angiography at preop, postop, and follow-up...
August 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28343587/hybrid-snorkel-endovascular-repair-of-a-ruptured-abdominal-aortic-aneurysm-related-to-a-type-ia-endoleak-utilizing-an-axillary-conduit
#15
Ansar Z Vance, Charles R Fedele, Assaf Graif, D Bhaskar Rao, Daniel A Leung
No abstract text is available yet for this article.
April 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28342593/taxocoenosis-of-epibenthic-dinoflagellates-in-the-coastal-waters-of-the-northern-yucatan-peninsula-before-and-after-the-harmful-algal-bloom-event-in-2011-2012
#16
Ana C Aguilar-Trujillo, Yuri B Okolodkov, Jorge A Herrera-Silveira, Fany Del C Merino-Virgilio, Citlalli Galicia-García
Eutrophication causes the major impact in the coastal waters of the state of Yucatan. In general, loss of water quality and biological communities and massive development of toxic microorganisms are some of the consequences of this phenomenon. To reveal changes in species composition and cell abundance of the taxocoenosis of epibenthic dinoflagellates before and after a harmful algal bloom event in the water column that lasted about 150days (August-December 2011) in the Dzilam - San Crisanto area (northern Yucatan Peninsula, southeastern Gulf of Mexico) were the main objectives of the present study...
March 22, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28259824/endovascular-management-of-proximal-fixation-loss-using-parallel-stent-grafting-techniques-to-preserve-visceral-flow
#17
Adam Tanious, Mathew Wooster, Andrew Jung, Peter R Nelson, Martin R Back, Murray L Shames
BACKGROUND: Proximal fixation loss following endovascular aortic aneurysm repair (EVAR) creates a clinical dilemma. Typically, endovascular salvage requires adequate aortic neck below the renal arteries, in cases with no infrarenal neck proximal extension into the paravisceral aorta using parallel grafts provides an alternative to open graft explant. We present our experience at a tertiary care center with endovascular management of proximal fixation loss following EVAR using parallel stent grafting techniques to preserve renal and visceral branches...
March 1, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28247541/sea-lice-infestation-levels-decrease-with-deeper-snorkel-barriers-in-atlantic-salmon-sea-cages
#18
Frode Oppedal, Francisca Samsing, Tim Dempster, Daniel W Wright, Samantha Bui, Lars H Stien
BACKGROUND: Salmon lice (Lepeophtheirus salmonis) are the most important parasites of farmed salmon. Infective larvae position themselves in the upper part of the water column to increase encounter probabilities with potential hosts. Previous studies have shown that a 'snorkel' sea-cage technology protects salmon from infection in surface waters. We tested whether deep snorkels would more effectively reduce lice infestation than shallow snorkels and still uphold adequate conditions for the fish...
March 1, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28242400/endovascular-management-of-a-ruptured-aortic-arch-pseudoaneurysm-using-the-snorkel-technique-and-coil-embolization
#19
Tao Ma, Zhi Hui Dong, Wei Guo Fu, Bin Chen, Jun Hao Jiang, Yun Shi
We report a reoperation case of a ruptured infectious aortic arch pseudoaneurysm, which was stabilized with thoracic endovascular aortic repair and snorkel bypass of the innominate artery (IA) and the left common carotid artery (LCCA). A 57-year-old Chinese woman with multiple comorbidities and previous open repair for Stanford type A aortic dissection 5 years ago presented with a ruptured 10.7 cm × 7.3 cm aortic arch pseudoaneurysm involving the origins of the LCCA and the left subclavian artery. The patient underwent emergent endovascular aortic repair with placement of a stent graft in both IA and left carotid artery coursing parallel to the aortic arch endograft...
May 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28239356/sex-and-exercise-intensity-do-not-influence-oxygen-uptake-kinetics-in-submaximal-swimming
#20
Joana F Reis, Gregoire P Millet, Paula M Bruno, Veronica Vleck, Francisco B Alves
The aim of this study was to compare the oxygen uptake ([Formula: see text]) kinetics in front crawl between male and female swimmers at moderate and heavy intensity. We hypothesized that the time constant for the primary phase [Formula: see text] kinetics was faster in men than in women, for both intensities. Nineteen well trained swimmers (8 females mean ± SD; age 17.9 ± 3.5 years; mass 55.2 ± 3.6 kg; height 1.66 ± 0.05 m and 11 male 21.9 ± 2.8 years; 78.2 ± 11.1 kg; 1.81 ± 0.08 m) performed a discontinuous maximal incremental test and two 600-m square wave transitions for both moderate and heavy intensities to determine the [Formula: see text] kinetics parameters using mono- and bi-exponential models, respectively...
2017: Frontiers in Physiology
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