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Volume replacement

Ke Yuan, Sang Soo Lee, Vincent De Andrade, Neil C Sturchio, Paul Fenter
The mobility of toxic elements, such as lead (Pb) can be attenuated by adsorption, incorporation, and precipitation on carbonate minerals in subsurface environments. Here, we report a study of the bulk transformation of single-crystal calcite (CaCO3) into polycrystalline cerussite (PbCO3) through reaction with acidic Pb-bearing solutions. This reaction began with the growth of a cerussite shell on top of calcite surfaces followed by the replacement of the remaining calcite core. The external shape of the original calcite was preserved by a balance between calcite dissolution and cerussite growth controlled by adjusting the Pb(2)(+) concentration and pH...
October 21, 2016: Environmental Science & Technology
Gennaro Giustino, Roxana Mehran, Roland Veltkamp, Michela Faggioni, Usman Baber, George D Dangas
OBJECTIVES: The aim of this study was to investigate the efficacy and safety of intraprocedural embolic protection (EP) during transcatheter aortic valve replacement (TAVR). BACKGROUND: Randomized controlled trials (RCTs) investigating the efficacy of EP devices during TAVR were relatively underpowered. METHODS: A systematic review and study-level meta-analysis was performed of randomized controlled trials that tested the efficacy and safety of EP during TAVR...
October 24, 2016: JACC. Cardiovascular Interventions
Cristina Segundo, Laura Román, Manuel Gómez, Mario M Martínez
This article describes the effect of mechanically fractionated flours from green bananas on the nutritional, physical and sensory attributes of two types of cakes (sponge and layer). A plausible 30% replacement of banana flour in the formulation of layer cakes is demonstrated, finding only a small decline in the sensory perception. On the contrary, sponge cakes were noticeable worsened with the use of banana flours (lower specific volume, worse sensory attributes and higher hardness), which was minimized when using fine flour...
March 15, 2017: Food Chemistry
Matthew C Henn, Thomas Percival, Alan Zajarias, Spencer J Melby, Brian R Lindman, Nishath Quader, Ralph J Damiano, Marc R Moon, John M Lasala, Ravinder S Rao, Jennifer Bell, Marci S Damiano, Hersh S Maniar
BACKGROUND: Smaller transcatheter aortic valve replacement (TAVR) delivery systems have increased the number of patients eligible for transfemoral procedures while decreasing the need for transaortic (TAo) or transapical (TA) access. As a result, newer TAVR centers are likely to have less exposure to these alternative access techniques, making it harder to achieve proficiency. The purpose of this study was to evaluate the learning curve for TAVR approaches and compare perioperative outcomes...
October 17, 2016: Annals of Thoracic Surgery
Matti Seppänen, Mikko Karvonen, Petri Virolainen, Ville Remes, Pekka Pulkkinen, Antti Eskelinen, Antti Liukas, Keijo T Mäkelä
Background and purpose - In a previous registry report, short-term implant survival of hip resurfacing arthroplasty (HRA) in Finland was found to be comparable to that of total hip arthroplasty (THA). Since then, it has become evident that adverse reactions to metal debris (ARMDs) may also be associated with HRA, not only with large-diameter head metal-on-metal THA. The aim of the study was to assess medium- to long-term survivorship of HRA based on the Finnish Arthroplasty Register (FAR). Patients and methods - 5,068 HRAs performed during the period 2001-2013 in Finland were included...
October 19, 2016: Acta Orthopaedica
Musfiqur Rahman, A M Abd El-Aty, Sung-Woo Kim, Sung Chul Shin, Ho-Chul Shin, Jae-Han Shim
In pesticide residue analysis, relatively low-sensitivity traditional detectors, such as UV, diode array, electron-capture, flame photometric, and nitrogen-phosphorus detectors, have been used following classical sample preparation (liquid-liquid extraction and open glass column cleanup); however, the extraction method is laborious, time-consuming, and requires large volumes of toxic organic solvents. A quick, easy, cheap, effective, rugged, and safe method was introduced in 2003 and coupled with selective and sensitive mass detectors to overcome the aforementioned drawbacks...
October 19, 2016: Journal of Separation Science
Shaohui Liu, Peter Veldman
Endothelial keratoplasty (EK) has replaced penetrating keratoplasty (PKP) as the preferred surgical therapy for corneal endothelial dysfunction. However, recent nationwide corneal graft registry data showed few advantages to EK relative to PKP with respect to graft survival and visual outcomes. This article compares the published outcomes and complications of EK to those of PKP. EK demonstrates superior spectacle corrected visual outcomes, fast recovery, less graft rejection, and higher patient satisfaction, particularly in studies performed by high-volume surgeons/centers...
October 18, 2016: Seminars in Ophthalmology
William R Clark, Francesco Garzotto, Mauro Neri, Anna Lorenzin, Marta Zaccaria, Claudio Ronco
PURPOSE: Dialysis is a highly quantitative therapy involving large volumes of both clinical and technical data. While automated data collection has been implemented for chronic dialysis, this has not been done for acute kidney injury patients treated with continuous renal replacement therapy (CRRT). METHODS: After a brief review of the fundamental aspects of electronic medical records (EMRs), a new tool designed to provide clinicians with individualized CRRT treatment data is analyzed, with emphasis on its quality assurance capabilities...
October 10, 2016: International Journal of Artificial Organs
Scott C Watkins, Andrew D Shaw
PURPOSE OF REVIEW: The past decade has seen more advances in our understanding of fluid therapy than the preceding decades combined. What was once thought to be a relatively benign panacea is increasingly being recognized as a potent pharmacological and physiological intervention that may pose as much harm as benefit. RECENT FINDINGS: Recent studies have clearly indicated that the amount, type, and timing of fluid administration have profound effects on patient morbidity and outcomes...
September 29, 2016: Current Opinion in Critical Care
Takahiro Kaneko, Satoshi Nakamura, Shunsuke Hino, Norio Horie, Tetsuo Shimoyama
BACKGROUND: Sinus lift is a bone augmentation procedure that improves the alveolar crest height in an atrophic posterior maxilla. However, the regenerated bone volume can vary and generally has a tendency to decrease after sinus operation. This article describes nongrafted maxillary sinus lift using a bioresorbable unsintered hydroxyapatite combined with poly L-lactide (HA/PLLA) mesh plate device and dental implant placement in an atrophic posterior maxilla, after which continuous bone gain was observed around the implant apex during a postoperative follow-up period of 3 years...
December 2016: Int J Implant Dent
Xiaodong Zhang, Shasha Jing, Peiyi Gao, Jing Xue, Lu Su, Weiping Li, Lijie Ren, Qingmao Hu
Segmentation of infarcts at hyperacute stage is challenging as they exhibit substantial variability which may even be hard for experts to delineate manually. In this paper, a sparse representation based classification method is explored. For each patient, four volumetric data items including three volumes of diffusion weighted imaging and a computed asymmetry map are employed to extract patch features which are then fed to dictionary learning and classification based on sparse representation. Elastic net is adopted to replace the traditional L0-norm/L1-norm constraints on sparse representation to stabilize sparse code...
2016: Computational and Mathematical Methods in Medicine
Gefen Ronen-Eliraz, Amos Russak, Ido Nitzan, Joseph Guttman, Daniel Kurtzman
Managed aquifer recharge (MAR) events are occasionally carried out with surplus desalinated seawater that has been post-treated with CaCO3 in infiltration ponds overlying the northern part of the Israeli Coastal Aquifer. This water's chemical characteristics differ from those of any other water recharged to the aquifer and of the natural groundwater. As the MAR events are short (hours to weeks), the sediment under the infiltration ponds will intermittently host desalinated and natural groundwater. As part of comprehensive research on the influence of those events, column experiments were designed to simulate the alternation of the two water types: post-treated desalinated seawater (PTDES) and natural groundwater (GW)...
October 13, 2016: Science of the Total Environment
Francesco Nappi, Cristiano Spadaccio, Jean Louis Sablayrolles
The recent literature on transcatheter aortic valve replacement (TAVR) is shedding new light on the perspective to extend this procedure to other lower risk-category of patients, leading in fact to a potential erosion of the current guidelines. Notwithstanding the warnings provided in the literature regarding the risk of severely impairing complications, unclear survival advantage and cost-inefficiency, many observational studies, especially performed in high-volume centers, support a general drive toward the recruitment of intermediate-low risk patients in the expectation of clinical advantages versus standard surgical replacement...
October 6, 2016: JACC. Cardiovascular Interventions
Larissa Di Marzo, David M Barbano
Our objective was to determine the effect of mid-infrared (MIR) homogenizer efficiency on accuracy and repeatability of Fourier transform MIR predicted fat, true protein, and anhydrous lactose determination given by traditional filter and partial least squares (PLS) prediction models. Five homogenizers with different homogenization performance based on laser light-scattering particle size analysis were used. Repeatability and accuracy were determined by conducting 17 sequential readings on milk homogenized externally to the instrument (i...
October 13, 2016: Journal of Dairy Science
Junnan Zheng, Liangwei Chen, Linfeng Qian, Jianjie Jiang, Yinglian Chen, Jue Xie, Liping Shi, Yiming Ni, Haige Zhao
We aimed to evaluate whether blood conservation strategies including intraoperative autologous donation (IAD) could reduce perioperative blood transfusion for patients undergoing cardiac valve replacement including mitral valve replacement, aortic valve replacement (AVR), and double valve replacement (DVR).A total of 726 patients were studied over a 3-year period (2011-2013) after the implementation of IAD and were compared with 919 patients during the previous 36-month period (January 2008-December 2010). The method of small-volume retrograde autologous priming, strict blood transfusion standard together with IAD constituted a progressive blood-saving strategy...
October 2016: Medicine (Baltimore)
Woo Young Choi, Ki Wook Sung, Young Seok Kim, Jong Won Hong, Tai Suk Roh, Dae Hyun Lew, Jong Hee Chang, Kyu Sung Lee
Skull base reconstruction is a challenging task. The method depends on the anatomical complexity and size of the defect. We obtained tissue by harvesting fat-containing perifascial areolar tissue (PAT) for reconstruction of limited skull base defects and volume augmentation. We demonstrated the effective option for reconstruction of limited skull base defects and volume augmentation. From October 2013 to November 2015, 5 patients underwent operations using fat-containing PAT to fill the defect in skull base and/or perform volume replacement in the forehead...
October 6, 2016: Annals of Plastic Surgery
Luca Ferrantino, Dieter Bosshardt, Myron Nevins, Giacomo Santoro, Massimo Simion, David Kim
Reducing the need for a connective tissue graft by using an efficacious biomaterial is an important task for dental professionals and patients. This experimental study aimed to test the soft tissue response to a volume-stable new collagen matrix. The device demonstrated good stability during six different time points ranging from 0 to 90 days of healing with no alteration of the wound-healing processes. The 90-day histologic specimen demonstrates eventual replacement of most of the matrix with new connective tissue fibers...
November 2016: International Journal of Periodontics & Restorative Dentistry
Douglas Wildes, Warren Lee, Bruno Haider, Scott Cogan, Krishnakumar Sundaresan, David Mills, Christopher Yetter, Patrick Hart, Christopher Haun, Mikael Concepcion, Johan Kirkhorn, Marc Bitoun
We developed a 2.5 x 6.6 mm 2D array transducer with integrated transmit/receive ASIC for 4D ICE (real-time 3D IntraCardiac Echocardiography) applications. The ASIC and transducer design were optimized so that the high voltage transmit, low-voltage TGC (time-gain control) and preamp, subaperture beamformer, and digital control circuits for each transducer element all fit within the 0.019 mm2 area of the element. The transducer assembly was deployed in a 10 Fr (3.3 mm diameter) catheter, integrated with a GE Vivid1 E9 ultrasound imaging system, and evaluated in three pre-clinical studies...
October 12, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Michinobu Nagao, Yuzo Yamasaki, Takeshi Kamitani, Satoshi Kawanami, Masatoshi Kondo, Hiromichi Sonoda, Taisuke Fujioka, Hiroshi Honda
The purpose of this study is to analyze the geometrical characteristics of aortic root and left ventricular (LV) function in aortic stenosis (AS) using 256-slice coronary-computed tomography angiography (CCTA). Retrospective ECG-gated 256-slice CCTA data from 32 patients with tricuspid AS scheduled for aortic valve replacement, and 11 controls were analyzed. Aortic root geometry was measured using multiplanar reconstruction CT images. CCTA data set was transformed into 100 phases/cycle using motion coherence image processing...
October 13, 2016: Heart and Vessels
Santosh Kumar Sinha, Shalini Garg, Ramesh Thakur, Vinay Krishna, Karandeep Singh, Mohit Sachan, Amit Goel, Mahamdula Razi, Umeshwar Pandey, Chandra Mohan Varma
BACKGROUND: The optimal timing of surgery in patients with chronic organic severe mitral regurgitation (MR) continues to be debated, especially for those who are asymptomatic. The aim of the study was to determine independent and additive prognostic value of exercise brain natriuretic peptide (eBNP) in patients with severe asymptomatic MR and normal left ventricular ejection fraction (LVEF). METHODS: Two hundred twenty-three consecutive patients with severe MR defined by effective regurgitant orifice (ERO) area ≥ 40 mm(2) and/or residual volume ≥ 60 mL, LVEF > 60%, and normal LV end-systolic diameter < 40 mm underwent symptom limited exercise treadmill test (TMT)...
November 2016: Journal of Clinical Medicine Research
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