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https://www.readbyqxmd.com/read/28429291/correlation-of-carotid-blood-flow-and-corrected-carotid-flow-time-with-invasive-cardiac-output-measurements
#1
Irene W Y Ma, Joshua D Caplin, Aftab Azad, Christina Wilson, Michael A Fifer, Aranya Bagchi, Andrew S Liteplo, Vicki E Noble
BACKGROUND: Non-invasive measures that can accurately estimate cardiac output may help identify volume-responsive patients. This study seeks to compare two non-invasive measures (corrected carotid flow time and carotid blood flow) and their correlations with invasive reference measurements of cardiac output. Consenting adult patients (n = 51) at Massachusetts General Hospital cardiac catheterization laboratory undergoing right heart catheterization between February and April 2016 were included...
December 2017: Critical Ultrasound Journal
https://www.readbyqxmd.com/read/28417338/accessibility-accountability-affordability-healthcare-policy-in-orthopedic-trauma
#2
REVIEW
Renee C Genova, Rachel L Box, James R Ficke
PURPOSE OF REVIEW: This review provides historical background on trauma care in the USA and summarizes contemporary trauma-related health policy issues. It is a primer for orthopedic surgeons who want to promote improvements in research, delivery, and cost reduction in trauma care. RECENT FINDINGS: As of 2010, funding for trauma research accounted for only 0.02% of all National Institutes of Health research funding. This is disproportionate to the societal burden of traumatic injury, which is the leading cause of death and disability among people aged 1 to 46 years in the USA...
April 18, 2017: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/28415185/passive-scalars-mixing-diffusion-and-intermittency-in-helical-and-nonhelical-rotating-turbulence
#3
P Rodriguez Imazio, P D Mininni
We use direct numerical simulations to compute structure functions, scaling exponents, probability density functions, and effective transport coefficients of passive scalars in turbulent rotating helical and nonhelical flows. We show that helicity affects the inertial range scaling of the velocity and of the passive scalar when rotation is present, with a spectral law consistent with ∼k_{⊥}^{-1.4} for the passive scalar variance spectrum. This scaling law is consistent with a phenomenological argument [P...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28392954/persistent-oxygen-requirement-beyond-prematurity-a-case-of-acquired-pulmonary-vein-stenosis
#4
Tyler A Fick, Bernadette Richards, Carl H Backes, Molly K Ball
Acquired pulmonary vein stenosis is a rare cardiac defect and diagnosis can often be challenging, as many cases present with refractory or prolonged oxygen requirement over the expected course. Comorbid conditions can cloud this diagnosis further. Prognosis is poor for most patients. We present a case of idiopathic acquired pulmonary vein stenosis and discuss diagnostics, treatment options, and the need for further collaborative studies.
2017: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/28372651/non-invasive-cardiac-output-monitor-validation-study-in-pediatric-cardiac-surgery-patients
#5
Christopher F Tirotta, Richard G Lagueruela, Danielle Madril, Evelio Velis, Jorge Ojito, Daniel Monroe, David Aguero, Marysory Irizarry, John McBride, Robert L Hannan, Redmond P Burke
STUDY OBJECTIVE: To validate a non-invasive cardiac output monitor in pediatric cardiac surgery patients. DESIGN: Prospective trial. SETTING: Operating room. PATIENTS: 20 pediatric cardiac surgery patients ASA physical status 3 and 4. INTERVENTIONS: Aesculon noninvasive cardiac output monitor was used and compared to the cardiac output derived from the Fick equation. Oxygen consumption was measured and blood samples were taken from the arterial line and from the superior and inferior vena cava...
May 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28350659/first-female-to-male-facial-confirmation-surgery-with-description-of-a-new-procedure-for-masculinization-of-the-thyroid-cartilage-adam-s-apple
#6
Jordan C Deschamps-Braly, Caitlin L Sacher, Jennifer Fick, Douglas K Ousterhout
Although male-to-female transgender patients commonly seek facial feminization surgery, facial masculinization surgery in the female-to-male transgender population is unreported in the literature. This report documents the first known female-to-male facial masculinization surgery, including a new technique for creating an "Adam's apple" to enhance the facial masculine appearance of a natal female. The authors "reversed" the methods typically used to feminize male facial features, and modified the forehead, nose, and chin to masculinize the patient's natal female facial features...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28349263/how-to-decide-on-modeling-details-risk-and-benefit-assessment
#7
Mustafa Özilgen
Mathematical models based on thermodynamic, kinetic, heat, and mass transfer analysis are central to this chapter. Microbial growth, death, enzyme inactivation models, and the modeling of material properties, including those pertinent to conduction and convection heating, mass transfer, such as diffusion and convective mass transfer, and thermodynamic properties, such as specific heat, enthalpy, and Gibbs free energy of formation and specific chemical exergy are also needed in this task. The origins, simplifying assumptions, and uses of model equations are discussed in this chapter, together with their benefits...
March 28, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/28344390/algal-cultivation-in-urban-wastewater-an-efficient-way-to-reduce-pharmaceutical-pollutants
#8
Francesco G Gentili, Jerker Fick
The purpose of this study was to investigate whether pharmaceutical pollutants in urban wastewater can be reduced during algal cultivation. A mixed population of wild freshwater green algal species was grown on urban wastewater influent in a 650 L photobioreactor under natural light and with the addition of flue gases. Removal efficiencies were very high (>90 %), moderate (50-90 %), low (10-50 %), and very low or non-quantifiable (<10 %) for 9, 14, 11, and 18 pharmaceuticals, respectively, over a 7-day period...
2017: Journal of Applied Phycology
https://www.readbyqxmd.com/read/28327655/thin-film-metallic-glass-an-effective-diffusion-barrier-for-se-doped-agsbte2-thermoelectric-modules
#9
Chia-Chi Yu, Hsin-Jay Wu, Ping-Yuan Deng, Matthias T Agne, G Jeffrey Snyder, Jinn P Chu
The thermal stability of joints in thermoelectric (TE) modules, which are degraded during interdiffusion between the TE material and the contacting metal, needs to be addressed in order to utilize TE technology for competitive, sustainable energy applications. Herein, we deposit a 200 nm-thick Zr-based thin-film metallic glass (TFMG), which acts as an effective diffusion barrier layer with low electrical contact resistivity, on a high-zT Se-doped AgSbTe2 substrate. The reaction couples structured with TFMG/TE are annealed at 673 K for 8-360 hours and analyzed by electron microscopy...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28327592/anisotropy-of-hydrogen-diffusion-in-nickel-single-crystals-the-effects-of-self-stress-and-hydrogen-concentration-on-diffusion
#10
J Li, A Oudriss, A Metsue, J Bouhattate, X Feaugas
Hydrogen diffusion has an important role in solute-dependent hydrogen embrittlement in metals and metallic alloys. In spite of extensive studies, the complexity of hydrogen diffusion in solids remains a phenomenon that needs to be clarified. In this paper, we investigate the anisotropy of hydrogen diffusion in pure nickel single crystals using both an experimental approach and a thermodynamic development. As a first approximation, experimental data from electrochemical permeation and thermal desorption spectroscopy are described using the classical Fick's laws and an apparent diffusion tensor...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28323766/-zero-preventable-deaths-and-minimizing-disability-the-challenge-set-forth-by-the-national-academies-of-sciences-engineering-and-medicine
#11
Daniel J Stinner, Anthony E Johnson, Andrew Pollak, Ellen MacKenzie, James R Ficke, Robert L Mabry, James Czarnik, Andrew Schmidt
No abstract text is available yet for this article.
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28315943/hyperoxia-reduces-oxygen-consumption-in-children-with-pulmonary-hypertension
#12
Long Guo, Prashant Bobhate, Shine Kumar, Karunakar Vadlamudi, Tarek Kaddoura, Mohamed Elgendi, Paula Holinski, James Y Coe, Jennifer Rutledge, Ian Adatia
High inspired oxygen concentration (FiO2 > 0.85) is administered to test pulmonary vascular reactivity in children with pulmonary hypertension (PH). It is difficult to measure oxygen consumption (VO2) if the subject is breathing a hyperoxic gas mixture so the assumption is made that baseline VO2 does not change. We hypothesized that hyperoxia changes VO2. We sought to compare the VO2 measured by a thermodilution catheter in room air and hyperoxia. A retrospective review of the hemodynamic data obtained in children with PH who underwent cardiac catheterization was conducted between 2009 and 2014...
March 18, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28291446/military-and-civilian-collaboration-the-power-of-numbers
#13
Daniel J Stinner, Joseph C Wenke, James R Ficke, Wade Gordon, James Toledano, Anthony R Carlini, Daniel O Scharfstein, Ellen J MacKenzie, Michael J Bosse, Joseph R Hsu
The purpose of this study was to compare the number and types of extremity injuries treated at civilian trauma centers (CIV CENs) versus military treatment facilities (MTFs) participating in the Major Extremity Trauma Research Consortium (METRC) and to investigate the potential benefits of a clinical research network that includes both civilian trauma centers and MTFs. Two analyses were performed. First, registry data collected on all surgically treated fractures at four core MTFs and 21 CIV CENs over one year were compared...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28288311/screening-of-biocides-metals-and-antibiotics-in-swedish-sewage-sludge-and-wastewater
#14
Marcus Östman, Richard H Lindberg, Jerker Fick, Erik Björn, Mats Tysklind
Incoming sewage water, treated effluent and digested sludge were collected from 11 Swedish sewage treatment plants (STPs) on 3 different days. Analytical protocols were established for a large number of compounds (47) with antimicrobial properties and the collected samples were then screened for the presence of these selected substances. Liquid chromatography tandem mass spectrometry (LC-MS/MS) and inductively coupled plasma mass spectrometry (ICP-MS) were used to analyse the samples. Thirty organic compounds and 10 metals were detected above their respective detection limit...
March 6, 2017: Water Research
https://www.readbyqxmd.com/read/28273540/screening-of-benzodiazepines-in-thirty-european-rivers
#15
Jerker Fick, Tomas Brodin, Martina Heynen, Jonatan Klaminder, Micael Jonsson, Katerina Grabicova, Tomas Randak, Roman Grabic, Vit Kodes, Jaroslav Slobodnik, Andrew Sweetman, Mark Earnshaw, Anna Barra Caracciolo, Teresa Lettieri, Robert Loos
Pharmaceuticals as environmental contaminants have received a lot of interest over the past decade but, for several pharmaceuticals, relatively little is known about their occurrence in European surface waters. Benzodiazepines, a class of pharmaceuticals with anxiolytic properties, have received interest due to their behavioral modifying effect on exposed biota. In this study, our results show the presence of one or more benzodiazepine(s) in 86% of the analyzed surface water samples (n = 138) from 30 rivers, representing seven larger European catchments...
February 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/28249804/hypothesis-why-%C3%AE-no-could-be-finite-in-vitro-but-infinite-in-vivo
#16
Colin Borland, Suhani Patel, Qingyu Zhu, Alain Vuylsteke
There is controversy as to whether the lung Diffusing Capacity for Nitric Oxide (DLNO) is a direct measure of DM in the Roughton-Forster equation or whether θNO is finite and DM is greater than DLNO. Despite in vitro evidence that θNO is finite, some groups believe that it is infinite in vivo and that DMNO/DMCO (α) is greater than predicted by the combined Fick/Graham law of Gas Diffusion through a membrane. We here present a hypothesis applying the fundamental rules of combined diffusion and chemical reaction to a red cell to explain (i) why θNO could be finite in vitro but effectively infinite in vivo and (ii) why ∝ could appear greater than predicted...
February 27, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28221379/bridgehead-isomer-effects-in-bis-phosphido-bridged-diiron-hexacarbonyl-proton-reduction-electrocatalysts
#17
Ahibur Rahaman, Carolina Gimbert-Suriñach, Arne Ficks, Graham E Ball, Mohan Bhadbhade, Matti Haukka, Lee Higham, Ebbe Nordlander, Stephen B Colbran
The influence of the substitution, orientation and structure of the phosphido bridges in [Fe2(CO)6(μ-PR2)2] electrocatalysts of proton reduction has been studied. The isomers e,a-[Fe2(CO)6{μ-P(Ar)H}2] (1a(Ar): Ar = Ph, 2'-methoxy-1,1'-binaphthyl (bn')), e,e-[Fe2(CO)6{μ-P(Ar)H}2] (1b(Ar): Ar = Ph, bn') were isolated from reactions of iron pentacarbonyl and the corresponding primary phosphine, syntheses that also afforded the phosphinidene-capped tri-iron clusters, [Fe3(CO)9(μ-CO)(μ3-Pbn')] (2) and [Fe3(CO)9(μ3-PAr)2] (3(Ar), Ar = Ph, bn')...
February 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28209349/frequency-of-and-significance-of-physical-frailty-in-patients-with-heart-failure
#18
Quin E Denfeld, Kerri Winters-Stone, James O Mudd, Shirin O Hiatt, Christopher V Chien, Christopher S Lee
Physical frailty is an important prognostic indicator in heart failure (HF); however, few studies have examined the relation between physical frailty and invasive hemodynamics among adults with HF. The purpose of this study was to characterize physical frailty in HF in relation to invasive hemodynamics. We enrolled 49 patients with New York Heart Association class II to IV HF when participants were scheduled for a right-sided cardiac heart catheterization procedure. Physical frailty was measured according to the "frailty phenotype": shrinking, weakness, slowness, physical exhaustion, and low physical activity...
April 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28207478/-zero-preventable-deaths-and-minimizing-disability-the-challenge-set-forth-by-the-national-academies-of-sciences-engineering-and-medicine
#19
Daniel J Stinner, Anthony E Johnson, Andrew Pollak, Ellen MacKenzie, James R Ficke, Robert L Mabry, James Czarnik, Andrew Schmidt
No abstract text is available yet for this article.
February 15, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28203124/when-diarrhea-can-become-deadly-legionnaires-disease-complicated-by-bowel-obstruction
#20
Wesley Prichard, Laurel Fick
Legionnaires' disease may present with a broad spectrum of illnesses and nonspecific extrapulmonary symptoms including diarrhea. To our knowledge, bowel obstruction has not been reported as a manifestation of Legionella. We present a unique case of Legionnaires' disease contributing to a small bowel obstruction.
September 2016: Case Reports in Gastroenterology
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