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https://www.readbyqxmd.com/read/29232303/totally-endoscopic-cardiac-surgery-for-atrial-septal-defect-repair-on-beating-heart-without-robotic-assistance-in-25-patients
#1
Quang-Huy Dang, Ngoc-Thanh Le, Cong-Huu Nguyen, Dac-Dai Tran, Do-Hung Nguyen, Trung-Hieu Nguyen, Thi-Hai-Linh Ngo
OBJECTIVE: The aim of the study was to investigate the effectivity and safety of totally endoscopic cardiac surgery without robotic assistance for atrial septal defect (ASD) closure on beating hearts. METHODS: Twenty-five patients (adults/children: 15/10) underwent ASD closure using nonrobotically assisted totally endoscopic approach on beating heart. Three 5-mm trocars and one 12-mm trocar were used, only the superior vena cava is snared, filling the pleural and pericardial cavities with CO2, and the heart was beating during the surgery...
December 7, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29232025/hospital-volume-and-outcomes-of-robot-assisted-partial-nephrectomy
#2
Leilei Xia, Jose E Pulido, Raju R Chelluri, Marshall C Strother, Benjamin L Taylor, Jay D Raman, Thomas J Guzzo
OBJECTIVE: To evaluate the impact of hospital volume on outcomes of robot-assisted partial nephrectomy (RAPN). MATERIALS AND METHODS: Patients with renal cell carcinoma who underwent RAPN between 2010 and 2013 were identified in the National Cancer Database. Hospital yearly RAPN volume was categorized into five groups by most closely sorting patients into five groups of equal size (quintiles): very low, low, medium, high, and very high. Outcomes included 30-day mortality, 90-day mortality, open conversion, prolonged length of stay (PLOS, >3 days), 30-day readmission, and positive surgical margin (PSM) rates...
December 12, 2017: BJU International
https://www.readbyqxmd.com/read/29231715/nanoscale-structure-property-relationships-of-polyacrylonitrile-cnt-composites-as-a-function-of-polymer-crystallinity-and-cnt-diameter
#3
Jacob R Gissinger, Chandrani Pramanik, Bradley Newcomb, Satish Kumar, Hendrik Heinz
Polyacrylonitrile (PAN)/carbon nanotube (CNT) composites are used as a precursor for ultrastrong and lightweight carbon fibers. However, the mechanisms of formation and relationships of the nanoscale structure to mechanical and thermal properties have remained uncertain. This study reports on the impact of different degrees of PAN pre-orientation and CNT diameter on the composite properties using molecular dynamics simulation with accurate potentials and comparisons to experimental data. Relationships between the atomically resolved structure, thermal, and mechanical properties are derived...
December 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29228764/ultrasonographic-quantification-of-pleural-effusion-comparison-of-four-formulae
#4
Bolanle Olubunmi Ibitoye, Bukunmi Michael Idowu, Akinwumi Babatunde Ogunrombi, Babalola Ishmael Afolabi
Purpose: The purpose of this study was to evaluate the correlations of ultrasonographically estimated volumes of pleural fluid with the actual effusion volume in order to determine the most reliable formula. Methods: In 32 consecutive patients with clinically diagnosed pleural effusion, an ultrasound estimation was made of the volume of effusion using four different formulae, including two in the erect position and two in the supine position. Closed-tube thoracostomy drainage using a 28-Fr chest tube was performed...
October 18, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29227904/manipulating-the-structure-and-mechanical-properties-of-thermoplastic-polyurethane-polycaprolactone-hybrid-small-diameter-vascular-scaffolds-fabricated-via-electrospinning-using-an-assembled-rotating-collector
#5
Hao-Yang Mi, Xin Jing, Emily Yu, Xiaofeng Wang, Qian Li, Lih-Sheng Turng
The success of blood vessel transplants with vascular scaffolds (VSs) highly depends on their structure and mechanical properties. The fabrication of small diameter vascular scaffolds (SDVSs) mimicking the properties of native blood vessels has been a challenge. Herein, we propose a facile method to fabricate thermoplastic polyurethane (TPU)/polycaprolactone (PCL) hybrid SDVSs via electrospinning using a modified rotating collector. By varying the ratio between the TPU and the PCL, and changing the electrospinning volume, SDVSs with a wavy configuration and different properties could be obtained...
December 1, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29226964/quantifying-the-contribution-of-mass-flow-to-nitrogen-acquisition-by-an-individual-plant-root
#6
Ross E McMurtrie, Torgny Näsholm
The classic model of nitrogen (N) flux into roots is as a Michaelis-Menten (MM) function of soil-N concentration at root surfaces. Furthermore, soil-N transport processes that determine soil-N concentration at root surfaces are seen as a bottleneck for plant nutrition. Yet, neither the MM relationship nor soil-N transport mechanisms are represented in current terrestrial biosphere models. Processes governing N supply to roots - diffusion, mass flow, N immobilization by soil microbes - are incorporated in a model of root-N uptake...
December 11, 2017: New Phytologist
https://www.readbyqxmd.com/read/29226607/comparison-of-the-convolution-algorithm-with-tmr10-for-leksell-gamma-knife-and-dosimetric-verification-with-radiochromic-gel-dosimeter
#7
Petra Osmancikova, Josef Novotny, Jaroslav Solc, Jan Pipek
The Convolution algorithm, implemented in Leksell GammaPlan® ver. Here, 10, is the first algorithm for Leksell Gamma Knife that takes heterogeneities into account and models dose build-up effects close to tissue boundaries. The aim of this study was preliminary comparison of the Convolution and TMR10 algorithms for real clinical cases and dosimetric verification of the algorithms, using measurements in a phantom. A total of 25 patients involved in comparison of the Convolution and TMR10 algorithms were divided into three groups: patients with benign tumors close to heterogeneities, patients with functional disorders, and patients with tumors located far from heterogeneities...
December 10, 2017: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29224652/primary-percutaneous-coronary-intervention-at-centers-with-and-without-on-site-surgical-support-insights-from-the-blue-cross-blue-shield-of-michigan-cardiovascular-consortium-bmc2
#8
Majed Afana, Hitinder S Gurm, Milan Seth, Kathleen M Frazier, Sheryl Fielding, Gerald C Koenig
BACKGROUND: Primary percutaneous coronary intervention (PPCI) is being increasingly performed nationally at sites without on-site cardiac surgery; however, recent guidelines only provide a Class IIa recommendation for this practice. The state of Michigan has permitted PPCI without on-site surgery under a closely monitored system that mandates auditing of all procedures and quarterly feedback on quality and outcomes. This study sought to compare outcomes of patients undergoing PPCI at centers with and without on-site surgery in the state of Michigan...
January 2018: American Heart Journal
https://www.readbyqxmd.com/read/29218342/self-assembled-n-graphene-nanohollows-enabling-ultrahigh-energy-density-cathode-for-li-s-batteries
#9
Hanting Tang, Jinlong Yang, Guangxing Zhang, Chaokun Liu, Han Wang, Qinghe Zhao, Jiangtao Hu, Yandong Duan, Feng Pan
Functional porous carbon materials are widely used to solve the low conductivity and shuttle effect of Li-S batteries; however, the common carbon/sulfur composite electrodes based on traditional technology (with conducting agents and binders) make it difficult for a battery to work stably at an ultra-high sulfur loading of 10 mg cm-2. Herein, an appropriate content of sulfur was injected into a pomegranate-like structure self-assembled with nanohollows (PSSN) of N-graphene. The Li-PSSN/S battery based on traditional technology displays a large-capacity, high-rate and long-life at an ultra-high areal-sulfur loading of 10...
December 8, 2017: Nanoscale
https://www.readbyqxmd.com/read/29217876/nocturnal-enuresis-in-india-are-we-diagnosing-and-managing-correctly
#10
REVIEW
N M Reddy, H Malve, R Nerli, P Venkatesh, I Agarwal, V Rege
Nocturnal enuresis is a common problem affecting school-aged children worldwide. Although it has significant impact on child's psychology, it is always under-recognized in India and considered as a condition which will outgrow with advancing age. Nocturnal enuresis classified as primary or secondary and monosymptomatic or nonmonosymptomatic. Factors that cause enuresis include genetic factors, bladder dysfunction, psychological factors, and inappropriate antidiuretic hormone secretion, leading to nocturnal polyuria...
November 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/29216393/monte-carlo-simulation-of-out-of-field-organ-doses-and-cancer-risk-in-tanzania-for-radiation-therapy-of-unilateral-retinoblastoma-using-a-60co-unit
#11
Suleiman Ameir Suleiman, Yaping Qi, Yifei Pi, X George Xu
The use of 60Co teletherapy unit for the treatment of unilateral retinoblastoma (Rb) patients is a very common procedure in many developing countries including Tanzania. The aim of this study was to estimate organ-specific absorbed doses from an external beam radiation therapy 60Co unit for unilateral Rb and to assess the risks of the patients developing a secondary primary cancer. The absorbed dose estimations were based on a Monte Carlo method and a set of age-dependent computational male phantoms. The estimated doses were used to calculate the secondary cancer risks in out-of-field organs using the Biological Effects of Ionising Radiation VII risk models...
December 5, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29212177/differences-in-brain-gray-matter-volume-in-patients-with-crohn-s-disease-with-and-without-abdominal-pain
#12
Chunhui Bao, Peng Liu, Yin Shi, Luyi Wu, Xiaoming Jin, Xiaoqing Zeng, Jianye Zhang, Di Wang, Huirong Liu, Huangan Wu
Increasing evidence indicates that abnormal pain processing is present in the central nervous system of patients with Crohn's disease (CD). The purposes of this study were to assess changes in gray matter (GM) volumes in CD patients in remission and to correlate structural changes in the brain with abdominal pain. We used a 3.0 T magnetic resonance scanner to examine the GM structures in 21 CD patients with abdominal pain, 26 CD patients without abdominal pain, and 30 healthy control subjects (HCs). Voxel-based morphometric analyses were used to assess the brain GM volumes...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29210075/noise-contamination-from-pet-blood-sampling-pump-effects-on-structural-mri-image-quality-in-simultaneous-pet-mr-studies
#13
Elizabeth Bartlett, Christine DeLorenzo, Ramin Parsey, Chuan Huang
PURPOSE: To fully quantify PET imaging outcome measures, a blood-sampling pump is often used during the PET acquisition. With simultaneous PET/MR studies, a structural magnetization-prepared rapid gradient-echo (MP-RAGE) may also be acquired while the pump is generating electromagnetic noise. This study investigated whether this noise contamination would be detrimental to the quantification of volume and cortical thickness measures obtained from automated segmentation of the MP-RAGE image...
December 6, 2017: Medical Physics
https://www.readbyqxmd.com/read/29208512/interobserver-variability-in-the-delineation-of-the-primary-lung-cancer-and-lymph-nodes-on-different-four-dimensional-computed-tomography-reconstructions
#14
Susan Mercieca, José S A Belderbos, Katrien De Jaeger, Dominic A X Schinagl, Noëlle van der Voort Van Zijp, Jacqueline Pomp, Jacqueline Theuws, Jonathan Khalifa, Paul van de Vaart, Marcel van Herk
PURPOSE: The study compared interobserver variation in the delineation of the primary tumour (GTVp) and lymph nodes (GTVln) between three different 4DCT reconstruction types; Maximum Intensity Projection (MIP), Mid-Ventilation (Mid-V) and Mid-Position (Mid-P). MATERIAL AND METHODS: Seven radiation oncologists delineated the GTVp and GTVln on the MIP, Mid-V and Mid-P 4DCT image reconstructions of 10 lung cancer patients. The volumes, the mean standard deviation (SD) and distribution of SD (SD/area) over the median surface contour were compared for different tumour regions...
December 2, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29207345/water-in-oil-pickering-emulsions-stabilized-by-stearoylated-microcrystalline-cellulose
#15
Bo Pang, Huan Liu, Peiwen Liu, Xinwen Peng, Kai Zhang
HYPOTHESIS: Hydrophobic particles with static water contact angles larger than 90° are more like to stabilize W/O Pickering emulsions. In particular, high internal phase Pickering emulsions (HIPEs) are of great interest for diverse applications. However, W/O HIPEs have rarely been realized using sustainable biopolymers. Herein, we used stearoylated microcrystalline cellulose (SMCC) to stabilize W/O Pickering emulsions and especially, W/O HIPEs. Moreover, these W/O HIPEs can be further used as platforms for the preparation of porous materials, such as porous foams...
November 29, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29205064/2017-white-paper-on-recent-issues-in-bioanalysis-a-global-perspective-on-immunogenicity-guidelines-biomarker-assay-performance-part-3-lba-immunogenicity-biomarkers-and-pk-assays
#16
Shalini Gupta, Susan Richards, Lakshmi Amaravadi, Steven Piccoli, Binodh Desilva, Renuka Pillutla, Lauren Stevenson, Devangi Mehta, Montserrat Carrasco-Triguero, Robert Neely, Michael Partridge, Roland F Staack, Xuemei Zhao, Boris Gorovits, Gerry Kolaitis, Giane Sumner, Kay-Gunnar Stubenrauch, Linglong Zou, Shashi Amur, Chris Beaver, Isabella Berger, Flora Berisha, Herbert Birnboeck, Joe Bower, Seongeun Julia Cho, Isabelle Cludts, Laurent Cocea, Lorella Di Donato, Saloumeh Fischer, Stephanie Fraser, Fabio Garofolo, Sam Haidar, Jonathan Haulenbeek, Charles Hottenstein, Jenny Hu, Akiko Ishii-Watabe, Rafiq Islam, Darshana Jani, John Kadavil, John Kamerud, Daniel Kramer, Pekka Kurki, Stephen MacMannis, Jim McNally, Ashley Mullan, Apollon Papadimitriou, João Pedras-Vasconcelos, Soma Ray, Afshin Safavi, Yoshiro Saito, Natasha Savoie, Marianne Scheel Fjording, Kara Scheibner, John Smeraglia, An Song, Bruce Stouffer, Nilufer Tampal, Barry van der Strate, Thorsten Verch, Jan Welink, Yuanxin Xu, Tong-Yuan Yang, Lilian Yengi, Jianing Zeng, Yan Zhang, Yanhua Zhang, Stephen Zoog
The 2017 11th Workshop on Recent Issues in Bioanalysis took place in Los Angeles/Universal City, California, on 3-7 April 2017 with participation of close to 750 professionals from pharmaceutical/biopharmaceutical companies, biotechnology companies, contract research organizations and regulatory agencies worldwide. WRIB was once again a 5-day, week-long event - a full immersion week of bioanalysis, biomarkers and immunogenicity. As usual, it was specifically designed to facilitate sharing, reviewing, discussing and agreeing on approaches to address the most current issues of interest including both small- and large-molecule analysis involving LC-MS, hybrid ligand-binding assay (LBA)/LC-MS and LBA approaches...
December 5, 2017: Bioanalysis
https://www.readbyqxmd.com/read/29205053/2017-white-paper-rise-of-hybrid-lba-lcms-immunogenicity-assays-part-2-hybrid-lba-lcms-biotherapeutics-biomarkers-immunogenicity-assays-and-regulatory-agencies-inputs
#17
Hendrik Neubert, An Song, Anita Lee, Cong Wei, Jeff Duggan, Keyang Xu, Eric Woolf, Chris Evans, Joe Palandra, Omar Laterza, Shashi Amur, Isabella Berger, Mark Bustard, Mark Cancilla, Shang-Chiung Chen, Seongeun Julia Cho, Eugene Ciccimaro, Isabelle Cludts, Laurent Cocea, Celia D'Arienzo, Lieza Danan-Leon, Lorella Di Donato, Fabio Garofolo, Sam Haidar, Akiko Ishii-Watabe, Hao Jiang, John Kadavil, Sean Kassim, Pekka Kurki, Olivier Le Blaye, Kai Liu, Rod Mathews, Gustavo Mendes Lima Santos, Makoto Niwa, João Pedras-Vasconcelos, Mark Qian, Brian Rago, Ola Saad, Yoshiro Saito, Natasha Savoie, Dian Su, Matthew Szapacs, Nilufer Tampal, Stephen Vinter, Jian Wang, Jan Welink, Emma Whale, Amanda Wilson, Y-J Xue
The 2017 11th Workshop on Recent Issues in Bioanalysis (11th WRIB) took place in Los Angeles/Universal City, California on 3-7 April 2017 with participation of close to 750 professionals from pharmaceutical/biopharmaceutical companies, biotechnology companies, contract research organizations and regulatory agencies worldwide. WRIB was once again a 5-day, weeklong event - a full immersion week of bioanalysis, biomarkers and immunogenicity. As usual, it was specifically designed to facilitate sharing, reviewing, discussing and agreeing on approaches to address the most current issues of interest including both small and large molecule analysis involving LCMS, hybrid ligand binding assay (LBA)/LCMS and LBA approaches...
December 5, 2017: Bioanalysis
https://www.readbyqxmd.com/read/29204608/magnitude-of-neck-surface-vibration-as-an-estimate-of-subglottal-pressure-during-modulations-of-vocal-effort-and-intensity-in-healthy-speakers
#18
Victoria S McKenna, Andres F Llico, Daryush D Mehta, Joseph S Perkell, Cara E Stepp
Purpose: This study examined the relationship between the magnitude of neck-surface vibration (NSVMag; transduced with an accelerometer) and intraoral estimates of subglottal pressure (P'sg) during variations in vocal effort at 3 intensity levels. Method: Twelve vocally healthy adults produced strings of /pɑ/ syllables in 3 vocal intensity conditions, while increasing vocal effort during each condition. Measures were made of P'sg (estimated during stop-consonant closure), NSVMag (measured during the following vowel), sound pressure level, and respiratory kinematics...
December 4, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/29203457/non-invasive-estimation-of-11c-pbr28-binding-potential
#19
Martin Schain, Francesca Zanderigo, R Todd Ogden, William C Kreisl
[11C]PBR28 is a PET radioligand used to estimate densities of the 18 kDa translocator protein (TSPO) in vivo. Since there is no suitable reference region, arterial blood samples are required for full quantification. Here, we evaluate a methodology for full quantification of [11C]PBR28 PET data that does not require either a reference region or blood samples. Simultaneous estimation (SIME) uses time-activity curves from several brain regions to estimate binding potential (BPND), a theoretically more sensitive outcome measure than total distribution volume...
December 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/29203151/population-pharmacokinetic-evaluation-of-adv6209-an-innovative-oral-solution-of-midazolam-containing-cyclodextrin
#20
Frédéric Marçon, Catherine Guittet, Maria A Manso, Ingrid Burton, Luc-André Granier, Philippe Jacqmin, Hervé Dupont
INTRODUCTION: In the absence of a licensed formulation in many countries worldwide, ADV6209, an innovative 2mg/mL oral solution of midazolam containing cyclodextrin, has been developed for moderate sedation in paediatric patients. Population pharmacokinetics for ADV6209 is reported. METHODS: Plasma concentration data were collected from 37 paediatric patients and 12 healthy adults recruited in a single dose, open-label phase II pharmacokinetic study and in a single dose, randomised, open-label two-period crossover bioavailability study, respectively...
December 1, 2017: European Journal of Pharmaceutical Sciences
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