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https://www.readbyqxmd.com/read/29755961/correlation-and-interchangeability-of-venous-and-capillary-blood-gases-in-non-critically-ill-neonates
#1
Ratna N G B Tan, Steffen C Pauws, Evelyne van Loon, Vivanne E H J Smits, Enrico Lopriore, Arjan B Te Pas
Background: Venous blood gas (VBG) is frequently used in the neonatal unit as alternative for capillary blood gas (CBG). However, studies reporting correlation are conflicting and data on interchangeability in neonates are lacking. Objective: We investigated the correlation and interchangeability of the components between VBG and CBG in infants admitted to the neonatal intensive care unit. Methods: In a prospective study in the neonatal unit in Leiden University Medical Center (Netherlands), simultaneously VBG and CBG were withdrawn in neonates when both venous puncture and intravenous access as blood gas monitoring was indicated...
2018: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29719912/vascularized-bone-grafting-for-reconstruction-of-oncologic-defects-in-the-spine-a-systematic-review-and-pooled-analysis-of-the-literature
#2
Rachel Pedreira, Charalampos Siotos, Brian H Cho, Stella M Seal, Deepa Bhat, Hannah M Carl, Michelle Seu, J P Wolinksy, Justin M Sacks
BACKGROUND:  Resection of primary spinal tumors requires reconstruction for restoration of spinal column stability. Traditionally, some combination of bone grafting and instrumentation is implemented. However, delayed healing environments are associated with pseudoarthrodesis and failure. Implementation of vascularized bone grafting (VBG) to complement hardware may present a solution. We evaluated the use of VBG in oncologic spinal reconstruction via systematic review and pooled analysis of literature...
May 2, 2018: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/29673822/vascularized-spinous-process-graft-rotated-on-a-paraspinous-muscle-pedicle-for-lumbar-fusion-technique-description-and-early-clinical-experience
#3
Michael A Bohl, Kaith K Almefty, Mark C Preul, Jay D Turner, U Kumar Kakarla, Edward M Reece, Steve W Chang
BACKGROUND: Vascularized bone grafts (VBGs) are described as having superior osteogenicity, osteoconductivity, and osteoinductivity compared with other graft types, and have been used in high-risk patients to augment arthrodesis. Pedicled VBGs are rotated on an intact vascular pedicle and therefore maintain all the benefits of VBG, but avoid many of the challenges and additional morbidity of free-tissue transfer. This study describes a novel surgical technique for rotating vascularized spinous process into the posterolateral space for augmenting arthrodesis in patients undergoing posterolateral fusion (PLF)...
April 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29649820/accuracy-of-acid-base-diagnoses-using-the-central-venous-blood-gas-in-the-medical-intensive-care-unit
#4
Sarah J Schrauben, Dan Negoianu, Cristiana Costa, Raphael M Cohen, Stanley Goldfarb, Barry D Fuchs, Jeffrey S Berns
BACKGROUND: Acid-base disturbances are frequent in critically ill patients. Arterial blood gas (ABG) is the gold standard in the diagnosis of these disturbances, but it is invasive with potential hazards. For patients with a central venous catheter, venous blood gas (VBG) sampling may be an alternative, less-invasive diagnostic tool. However, the accuracy of a central VBG-based acid-base disorder diagnosis compared to an ABG is unknown. The primary objective of this study was to assess the accuracy of a central VBG-based acid-base disorder diagnosis compared to the "gold standard" ABG in critically ill patients...
April 12, 2018: Nephron
https://www.readbyqxmd.com/read/29524183/a-retrospective-comparative-study-of-primary-versus-revisional-roux-en-y-gastric-bypass-long-term-results
#5
Dimitrios Dardamanis, Julie Navez, Laurent Coubeau, Benoit Navez
AIMS: To compare the perioperative parameters and excess weight loss between patients operated by laporoscopic Roux-en-Y gastric bypass (LRYGB), as a primary operation or a revisional, for insufficient weight loss after vertical banded gastroplasty (VBG) or adjustable gastric banding (AGB). METHODS: A retrospective analysis of all patients who underwent a LRYGB was performed for the period 2004-2011. Demographics, preoperative body mass index (BMI), co-morbidities, operation time, conversion rate, perioperative complications, hospitalization period, and % of excess BMI loss (%EBMIL) were investigated and compared between groups...
March 9, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29514541/assessing-acid-base-status-in-circulatory-failure-relationship-between-arterial-and-peripheral-venous-blood-gas-measurements-in-hypovolemic-shock
#6
Scott E Rudkin, Craig L Anderson, Tristan R Grogan, David A Elashoff, Richard M Treger
BACKGROUND AND OBJECTIVES: In severe circulatory failure agreement between arterial and mixed venous or central venous values is poor; venous values are more reflective of tissue acid-base imbalance. No prior study has examined the relationship between peripheral venous blood gas (VBG) values and arterial blood gas (ABG) values in hemodynamic compromise. The objective of this study was to examine the correlation between hemodynamic parameters, specifically systolic blood pressure (SBP) and the arterial-peripheral venous (A-PV) difference for all commonly used acid-base parameters (pH, Pco2 , and bicarbonate)...
January 1, 2018: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/29458578/field-effect-transistor-integration-with-tio2-nanoparticles-for-sensing-of-cardiac-troponin-i-biomarker
#7
M K Md Arshad, R Adzhri, M F M Fathil, Subash C B Gopinath, Nuzaihan M N M
The development of electrical biosensor towards device miniaturization in order to achieve better sensitivity with enhanced electrical signal has certain limitations especially complexity in fabrication process and costs. In this paper, an alternative technique with minor modification in the device structure is presented for signal amplification by implementing ambipolar conduction in the biosensor itself. We demonstrated the field-effect transistor (FET)-based biosensor coupled back-gate for attaining a higher sensitivity with the detection of lower target abundance...
August 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29454599/vascularized-bone-graft-to-the-lunate-combined-with-temporary-scaphocapitate-fixation-for-treatment-of-stage-iii-kienb%C3%A3-ck-disease-a-report-of-the-results-a-minimum-of-2-years-after-surgery
#8
Taiichi Matsumoto, Ryosuke Kakinoki, Ryosuke Ikeguchi, Souichi Ohta, Masao Akagi, Shuichi Matsuda
PURPOSE: To report the outcomes of patients with stage III Kienböck disease treated by vascularized bone graft (VBG) followed by temporary scaphocapitate (SC) fixation, a minimum of 2 years after surgery. METHODS: Twenty-six patients (mean age, 35 years) with stage III Kienböck disease (16 with stage IIIA and 10 with stage IIIB), treated with VBG followed by SC fixation for 4 months, were retrospectively followed for at least 2 years (range, 24-121 months; mean, 61...
February 14, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29417487/perioperative-outcomes-of-laparoscopic-and-robotic-revisional-bariatric-surgery-in-a-complex-patient-population
#9
Katherine D Gray, Maureen D Moore, Adham Elmously, Omar Bellorin, Rasa Zarnegar, Gregory Dakin, Alfons Pomp, Cheguevara Afaneh
BACKGROUND: Utilization of the robotic platform has become more common in bariatric applications. We aim to show that robotic revisional bariatric surgery (RRBS) can be safely performed in a complex patient population with perioperative outcomes equivalent to laparoscopic revisional bariatric surgery (LRBS). METHODS: Retrospective review was conducted of adult patients undergoing laparoscopic revisional bariatric surgery (LRBS) or robotic revisional bariatric surgery (RRBS) at our institution from September 2007 to December 2016...
February 7, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29328287/method-for-precise-evaluation-of-refractive-index-modulation-amplitude-inside-the-volume-bragg-grating-recorded-in-photo-thermo-refractive-glass
#10
Peng Chen, Dongbing He, Yunxia Jin, Junming Chen, Jingyin Zhao, Jiao Xu, Yibin Zhang, Fanyu Kong, Hongbo He
In this paper, we present a method for achieving precise evaluation of amplitude of refractive index modulation (RIM) inside the volume Bragg grating (VBG) recorded in photo-thermo-refractive (PTR) glasses. The Gaussian divergence characteristics of the incident beam is theoretically considered when calculating the angular selectivity of VBG, and the profiles of experimental angular selectivity curves are utilized to determine the value of RIM with one step. The effectiveness of our proposed method is experimentally verified...
January 8, 2018: Optics Express
https://www.readbyqxmd.com/read/29306011/adaptation-of-human-gut-microbiota-to-bariatric-surgeries-in-morbidly-obese-patients-a-systematic-review
#11
Hanieh-Sadat Ejtahed, Pooneh Angoorani, Shirin Hasani-Ranjbar, Seyed-Davar Siadat, Nasrin Ghasemi, Bagher Larijani, Ahmad-Reza Soroush
BACKGROUND: Bariatric surgeries have turned to be a popular therapeutic option for morbid obesity nowadays. Gut microbiota is supposed to be responsible as a part of the bariatric surgeries success. In this systematic review, we detailed the human studies which investigated the effect of different bariatric surgeries on the composition of gut microbiota. METHODS: We did a comprehensive search in PubMed, Web of Science, and Scopus for all clinical trials and longitudinal observational studies documented up to December 2015...
March 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29301014/pedicled-vascularized-bone-grafts-for-posterior-occipitocervical-and-cervicothoracic-fusion-a-cadaveric-feasibility-study
#12
Michael A Bohl, Michael A Mooney, Joshua S Catapano, Kaith K Almefty, Jay D Turner, Steve W Chang, Mark C Preul, Edward M Reece, U Kumar Kakarla
BACKGROUND: Arthrodesis is critical for achieving favorable outcomes in reconstructive spine surgery. Vascularized bone grafts (VBGs) have been successfully used to augment fusion rates in a variety of skeletal pathologies, and pedicled VBG has numerous advantages over free transfer VBG. Pedicled VBG has not previously been described for the posterior occipitocervicothoracic spine. OBJECTIVE: To identify, describe, and assess potential donor sites for pedicled VBGs from occiput to T12 using a cadaver model and to describe important technical considerations for graft harvest and placement...
December 30, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29193717/is-venous-blood-gas-performed-in-the-emergency-department-predictive-of-outcome-during-acute-on-chronic-hypercarbic-respiratory-failure
#13
Lisa Domaradzki, Sahithi Gosala, Khaled Iskandarani, Andry Van de Louw
BACKGROUND: During acute on chronic hypercarbic respiratory failure (AHRF), arterial pH is associated with non-invasive ventilation (NIV) failure and mortality. Venous blood gas (VBG) has been proposed as a substitute for arterial blood gas, based on a good agreement between venous and arterial values. We assessed the predictive value of admission VBG on intubation rate, NIV failure and mortality during AHRF. METHODS: Retrospective chart review of inpatients admitted between 2009 and 2015 with AHRF who had VBG performed on admission...
November 28, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29136384/field-effect-modulation-of-heterogeneous-charge-transfer-kinetics-at-back-gated-2d-mos2-electrodes
#14
Yan Wang, Chang-Hyun Kim, Youngdong Yoo, James E Johns, C Daniel Frisbie
The ability to improve and to modulate the heterogeneous charge transfer kinetics of two dimensional (2D) semiconductors, such as MoS2, is a major challenge for electrochemical and photoelectrochemical applications of these materials. Here we report a continuous and reversible physical method for modulating the heterogeneous charge transfer kinetics at a monolayer MoS2 working electrode supported on a SiO2/p-Si substrate. The heavily doped p-Si substrate serves as a back gate electrode; application of a gate voltage (VBG) to p-Si tunes the electron occupation in the MoS2 conduction band and shifts the conduction band edge position relative to redox species dissolved in electrolyte in contact with the front side of the MoS2...
November 14, 2017: Nano Letters
https://www.readbyqxmd.com/read/29111277/resolution-of-ketoacidosis-in-children-with-new-onset-diabetes-evaluation-of-various-definitions
#15
Julia E von Oettingen, Erinn T Rhodes, Joseph I Wolfsdorf
AIMS: Data are sparse concerning use of serum electrolyte parameters as compared to venous blood gas (VBG) measurements to monitor acid-base status during treatment of diabetic ketoacidosis (DKA). We explored the utility of various parameters to define DKA resolution by investigating the relationship of venous pH (vpH), anion gap (AG), serum bicarbonate (HCO3 ), and glucose concentration during management of DKA in children with new onset diabetes mellitus (NODM). METHODS: We included all patients with NODM presenting with DKA to Boston Children's Hospital from 10/1/07-7/1/13...
January 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29101719/revisional-gastric-bypass-for-failed-restrictive-procedures-comparison-of-single-anastomosis-mini-and-roux-en-y-gastric-bypass
#16
Owaid M Almalki, Wei-Jei Lee, Jung-Chien Chen, Kong-Han Ser, Yi-Chih Lee, Shu-Chun Chen
BACKGROUND: Ten to 50% of patients who received restrictive bariatric operations may require reoperation for unsatisfactory weight loss or weight regain. Failed restrictive procedures are usually managed with conversion to another bariatric procedure with a favor of conversion to laparoscopic gastric bypass. Our aim is to evaluate two different bypass techniques, laparoscopic RY gastric bypass (RYGB) versus single-anastomosis (mini-) gastric bypass (SAGB) as a revision option (R-RYGB and R-SAGB) for failed restrictive bariatric operations...
November 3, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/29041632/wavelength-and-oam-tunable-vortex-laser-with-a-reflective-volume-bragg-grating
#17
Qiyao Liu, Yongguang Zhao, Manman Ding, Weichao Yao, Xuliang Fan, Deyuan Shen
Vortex beams carrying orbital angular momentum (OAM) have been recently investigated intensely in optical communication systems, as using OAM mode multiplexing simultaneously with other conventional multiplexing techniques is the key to further expand data capacity. This article demonstrates a wavelength- and OAM-tunable vortex laser at 1.6 µm in an Er:YAG system. For the first time to the best of our knowledge, a reflective volume Bragg grating (VBG) was theoretically and experimentally proved to be an effective OAM-preserving wavelength selector inside the laser cavity...
September 18, 2017: Optics Express
https://www.readbyqxmd.com/read/29041251/continuous-wave-and-passively-q-switched-cryogenic-yb-klu-wo-4-2-laser
#18
Petr Navratil, Venkatesan Jambunathan, Samuel Paul David, Fangxin Yue, Josep Maria Serres, Xavier Mateos, Magdalena Aguiló, Francesc Díaz, Uwe Griebner, Valentin Petrov, Antonio Lucianetti, Tomas Mocek
We study cryogenic laser operation of an Yb-doped KLu(WO4 )2 crystal pumped with a volume Bragg grating (VBG) stabilized diode laser at 981 nm. In the continuous wave laser regime, a maximum output power of 4.31 W is achieved at 80 K with a slope efficiency of 44.0% with respect to the incident pump power. Using a 85% initial transmission Cr:YAG crystal for passive Q-switching, an average output power of 2.11 W is achieved at 100 K for a repetition rate of 19 kHz. The pulse energy, pulse duration and peak power amount to 111 µJ, 231 ns and 0...
October 16, 2017: Optics Express
https://www.readbyqxmd.com/read/28951466/emergency-department-blood-gas-utilization-and-changes-in-ventilator-settings
#19
Haitham S Al Ashry, Jeremy B Richards, Daniel F Fisher, Jeffrey Sankoff, Todd A Seigel, Lauren B Angotti, Susan R Wilcox
BACKGROUND: Mechanically ventilated patients increasingly spend hours in emergency department beds before ICU admission. This study evaluated the performance of blood gases in mechanically ventilated subjects in the emergency department and subsequent changes to mechanical ventilation settings. METHODS: This was a multi-center, prospective, observational study of subjects ventilated in the emergency department, conducted at 3 academic emergency departments from July 2011 to March 2013...
September 26, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28940603/long-term-stable-vertical-bone-regeneration-after-sinus-floor-elevation-and-simultaneous-implant-placement-with-and-without-grafting
#20
Fernando Verdugo, Agurne Uribarri, Theresia Laksmana, Antonio D'addona
BACKGROUND: Less invasive surgical approaches to regenerate bone intra-sinus and allow long-term functional implant stability are needed. PURPOSE: To evaluate long-term vertical bone regeneration after sinus floor elevation and simultaneous implant placement with and without bone grafting. METHODS: Vertical bone gains (VBG) post-sinus elevation, with and without grafting, were evaluated in thirty individuals presenting an average residual bone height (RBH) of 4...
December 2017: Clinical Implant Dentistry and related Research
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