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Simolka J, Blanco R, Ingerl S, Krüger H, Sommer M, Srama R, Strack H, Wagner C, Arai T, Bauer M, Fröhlich P, Gläser J, Gräßlin M, Henselowsky C, Hillier J, Hirai T, Ito M, Kempf S, Khawaja N, Kimura H, Klinkner S, Kobayashi M, Lengowski M, Li Y, Mocker A, Moragas-Klostermeyer G, Postberg F, Rieth F, Sasaki S, Schmidt J, Sterken V, Sternovsky Z, Strub P, Szalay J, Trieloff M, Yabuta H. The DESTINY + Dust Analyser - a dust telescope for analysing cosmic dust dynamics and composition. Philos Trans A Math Phys Eng Sci 2024; 382:20230199. [PMID: 38736332 DOI: 10.1098/rsta.2023.0199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/08/2024] [Indexed: 05/14/2024]
Abstract
The DESTINY+(Demonstration and Experiment of Space Technology for INterplanetary voYage with Phaethon fLyby and dUst Science) Dust Analyser (DDA) is a state-of-the-art dust telescope for the in situ analysis of cosmic dust particles. As the primary scientific payload of the DESTINY+ mission, it serves the purpose of characterizing the dust environment within the Earth-Moon system, investigating interplanetary and interstellar dust populations at 1 AU from the Sun and studying the dust cloud enveloping the asteroid (3200) Phaethon. DDA features a two-axis pointing platform for increasing the accessible fraction of the sky. The instrument combines a trajectory sensor with an impact ionization time-of-flight mass spectrometer, enabling the correlation of dynamical, physical and compositional properties for individual dust grains. For each dust measurement, a set of nine signals provides the surface charge, particle size, velocity vector, as well as the atomic, molecular and isotopic composition of the dust grain. With its capabilities, DDA is a key asset in advancing our understanding of the cosmic dust populations present along the orbit of DESTINY+. In addition to providing the scientific context, we are presenting an overview of the instrument's design and functionality, showing first laboratory measurements and giving insights into the observation planning. This article is part of a theme issue 'Dust in the Solar System and beyond'.
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Affiliation(s)
- Jonas Simolka
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Roberto Blanco
- von Hoerner & Sulger GmbH , Schwetzingen, Baden-Württemberg, Germany
| | - Stephan Ingerl
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Harald Krüger
- Max-Planck-Institut für Sonnensystemforschung , Göttingen, Germany
| | - Maximilian Sommer
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Ralf Srama
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Heiko Strack
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Carsten Wagner
- von Hoerner & Sulger GmbH , Schwetzingen, Baden-Württemberg, Germany
| | - Tomoko Arai
- Chiba Institute of Technology , Chiba, Japan
| | - Marcel Bauer
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Patrick Fröhlich
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Jan Gläser
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | | | - Carsten Henselowsky
- Deutsches Zentrum für Luft- und Raumfahrt DLR Standort Bonn , Bonn, Nordrhein-Westfalen, Germany
| | | | | | - Motoo Ito
- Japan Agency for Marine-Earth Science and Technology , Yokosuka, Japan
| | - Sascha Kempf
- Laboratory for Atmospheric and Space Physics, University of Colorado at Boulder , Boulder, CO, USA
| | - Nozair Khawaja
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
- Freie Universität Berlin , Berlin, Germany
| | | | - Sabine Klinkner
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | | | - Michael Lengowski
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Yanwei Li
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Anna Mocker
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | | | | | - Florian Rieth
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | - Sho Sasaki
- Osaka University , Toyonaka, Osaka, Japan
| | | | | | - Zoltan Sternovsky
- Laboratory for Atmospheric and Space Physics, University of Colorado at Boulder , Boulder, CO, USA
| | - Peter Strub
- Institut für Raumfahrtsysteme, Universität Stuttgart , Stuttgart, Germany
| | | | - Mario Trieloff
- Universität Heidelberg , Heidelberg, Baden-Württemberg, Germany
| | - Hikaru Yabuta
- Hiroshima University , Higashihiroshima, Hiroshima, Japan
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Rego LF, Bronzato JD, Souza APC, de-Jesus-Soares A, Frozoni M. In Vitro Evaluation of the Dynamic Cyclic Fatigue Resistance of a New TruNatomy Glider File after Different Cycles of Use. J Endod 2024; 50:619-626. [PMID: 38311114 DOI: 10.1016/j.joen.2024.01.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/06/2024]
Abstract
INTRODUCTION Determination of the glide path is recommended before using rotary instruments. This study aimed to evaluate the dynamic cyclic fatigue resistance of new and used glider rotary instruments in up to 6 root canals. METHODS Seventy-two TruNatomy Glider files were used for the preparation of root canals of extracted lower molars, which were then submitted to the dynamic cyclic fatigue test carried out in a curved metallic artificial canal. The instruments were divided into 4 groups (n = 18): Control group, new instruments without any use in the root canal; Group 2U, instruments used in 2 mesial canals; Group 4U, instruments used in 4 mesial canals; Group 6U, instruments used in 6 mesial canals. The time to failure (TF) of the instrument was recorded, and the number of cycles to failure (NCF) was calculated. The data were submitted to 1-way analysis of variance and to the Games-Howell test for multiple comparisons, adopting a significance level of 5%. RESULTS TF and NCF were significantly affected by the number of file uses. The Games-Howell test revealed that TF and NCF were significantly greater in the control group than in Group 4U. In Group 2U, TF and NCF were intermediate and not significantly different from the control group. Group 6U had significantly lower TF and NCF than all other groups. CONCLUSION The TruNatomy Glider can be used as a glide path for up to 2 mesial canals of mandibular molars, whereas its use on 4 or 6 root canals is not suggested.
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Affiliation(s)
- Lorena Ferreira Rego
- Department of Endodontics, São Leopoldo Mandic School of Dentistry, Campinas, São Paulo, Brazil
| | - Juliana Delatorre Bronzato
- Division of Endodontics, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil.
| | | | - Adriana de-Jesus-Soares
- Division of Endodontics, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil
| | - Marcos Frozoni
- Department of Endodontics, São Leopoldo Mandic School of Dentistry, Campinas, São Paulo, Brazil
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3
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Nagy G. High-resolution ion mobility separations coupled to mass spectrometry: What's next? J Mass Spectrom 2024; 59:e5014. [PMID: 38605463 DOI: 10.1002/jms.5014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/01/2024] [Accepted: 02/21/2024] [Indexed: 04/13/2024]
Abstract
Herein, I provide a personal perspective on high-resolution multipass ion mobility spectrometry-mass spectrometry (IMS-MS), with a specific emphasis on cyclic (cIMS) and structures for lossless ion manipulations (SLIM IMS)-based separations. My overarching goal for this perspective was to detail what I believe will be the key important areas in which IMS-MS will help shape the bioanalytical community and especially omics-based research.
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Affiliation(s)
- Gabe Nagy
- Department of Chemistry, University of Utah, Salt Lake City, Utah, USA
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Lieu D. Ultrasound fundamentals and their clinical implications for interventional cytopathologists. Cytopathology 2024. [PMID: 38635297 DOI: 10.1111/cyt.13382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/01/2024] [Accepted: 04/08/2024] [Indexed: 04/19/2024]
Abstract
OBJECTIVE To describe the most important concepts in ultrasound physics that interventional cytopathologists need to understand in order to successfully perform ultrasound-guided needle biopsies. METHODS Review of the literature. RESULTS A deep understanding of ultrasound physics and the mathematics supporting it are not necessary. The most important concepts are frequency, attenuation, overall gain, time-gain compensation, focus, spatial resolution, temporal resolution and Doppler. CONCLUSION By understanding these eight basic concepts of ultrasound physics and their clinical implications, interventional cytopathologists can faithfully reproduce the imaging findings of the radiologist and locate the target to precisely guide a needle for biopsy.
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Affiliation(s)
- David Lieu
- Department of Pathology, UCLA, Los Angeles, California, USA
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Serrano LR, Peters-Clarke TM, Arrey TN, Damoc E, Robinson ML, Lancaster NM, Shishkova E, Moss C, Pashkova A, Sinitcyn P, Brademan DR, Quarmby ST, Peterson AC, Zeller M, Hermanson D, Stewart H, Hock C, Makarov A, Zabrouskov V, Coon JJ. The One Hour Human Proteome. Mol Cell Proteomics 2024; 23:100760. [PMID: 38579929 DOI: 10.1016/j.mcpro.2024.100760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/23/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024] Open
Abstract
We describe deep analysis of the human proteome in less than 1 h. We achieve this expedited proteome characterization by leveraging state-of-the-art sample preparation, chromatographic separations, and data analysis tools, and by using the new Orbitrap Astral mass spectrometer equipped with a quadrupole mass filter, a high-field Orbitrap mass analyzer, and an asymmetric track lossless (Astral) mass analyzer. The system offers high tandem mass spectrometry acquisition speed of 200 Hz and detects hundreds of peptide sequences per second within data-independent acquisition or data-dependent acquisition modes of operation. The fast-switching capabilities of the new quadrupole complement the sensitivity and fast ion scanning of the Astral analyzer to enable narrow-bin data-independent analysis methods. Over a 30-min active chromatographic method consuming a total analysis time of 56 min, the Q-Orbitrap-Astral hybrid MS collects an average of 4319 MS1 scans and 438,062 tandem mass spectrometry scans per run, producing 235,916 peptide sequences (1% false discovery rate). On average, each 30-min analysis achieved detection of 10,411 protein groups (1% false discovery rate). We conclude, with these results and alongside other recent reports, that the 1-h human proteome is within reach.
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Affiliation(s)
- Lia R Serrano
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA; Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Trenton M Peters-Clarke
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA; Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | | | - Eugen Damoc
- Thermo Fisher Scientific GmbH, Bremen, Germany
| | - Margaret Lea Robinson
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Noah M Lancaster
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA; Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Evgenia Shishkova
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA; National Center for Quantitative Biology of Complex Systems, Madison, Wisconsin, USA
| | - Corinne Moss
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | | | - Pavel Sinitcyn
- Morgridge Institute for Research, Madison, Wisconsin, USA
| | | | - Scott T Quarmby
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA; National Center for Quantitative Biology of Complex Systems, Madison, Wisconsin, USA
| | | | | | | | | | | | | | | | - Joshua J Coon
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA; Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, USA; National Center for Quantitative Biology of Complex Systems, Madison, Wisconsin, USA; Morgridge Institute for Research, Madison, Wisconsin, USA.
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Buzitis NW, Clowers BH. Development of a Modular, Open-Source, Reduced-Pressure, Drift Tube Ion Mobility Spectrometer. J Am Soc Mass Spectrom 2024; 35:804-813. [PMID: 38512132 DOI: 10.1021/jasms.4c00057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Toward the goal of minimizing construction costs while maintaining high performance, a new, reduced-pressure, drift tube ion mobility system is coupled with an ion trap mass analyzer through a custom ion shuttle. The availability of reduced-pressure ion mobility systems remains limited due to comparatively expensive commercial options and limited shared design features in the open literature. This report details the complete design and benchmarking characteristics of a reduced-pressure ion mobility system. The system is constructed from FR4 PCB electrodes and encased in a PTFE vacuum enclosure with custom torque-tightened couplers to utilize standard KF40 bulkheads. The PTFE enclosure directly minimizes the overall system expenses, and the implementation of threaded brass inserts allows for facile attachments to the vacuum enclosure without damaging the thermoplastic housing. Front and rear ion funnels maximize ion transmission and help mitigate the effects of radial ion diffusion. A custom planar ion shuttle transports ions from the exit of the rear ion funnel into the ion optics of an ion trap mass analyzer. The planar ion shuttle can couple the IM system to any contemporary Thermo Scientific ion trap mass analyzer. Signal stability and ion intensity remain unchanging following the implementation of the planar ion shuttle when compared to the original stacked ring ion guide. The constructed IM system showed resolving powers up to 85 for various small molecules and proteins using the Fourier transform from a ∼1 m drift tube. Recorded mobilities derived from first principles agree with published literature results with an average error of 1.1% and an average error toward literature values using single field calibration of <1.3%.
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Affiliation(s)
- Nathan W Buzitis
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - Brian H Clowers
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
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Stewart H, Grinfeld D, Petzoldt J, Hagedorn B, Skoblin M, Makarov A, Hock C. Crowd control of ions in the Astral analyzer. J Mass Spectrom 2024; 59:e5006. [PMID: 38501497 DOI: 10.1002/jms.5006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 03/20/2024]
Abstract
Space charge effects are the Achilles' heel of all high-resolution ion optical devices. In time-of-flight mass analyzers, these may manifest as reduction of resolving power, mass measurement shift, peak coalescence, and/or transmission losses, while highly sensitive modern ion sources and injection devices ensure that such limits are easily exceeded. Space charge effects have been investigated, by experiment and simulation study, for the astral multi-reflection analyzer, incorporating ion focusing via a pair of converging ion mirrors, and fed by a pulsed extraction ion trap. Major factors were identified as the resonant effect between ~103 ions of similar m/z in-flight and the expansion of trapped packets of ~104-5 ions prior to extraction. Optimum operation and compensated ion mirror calibration strategies were then generated and described based on these findings.
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Tabayashi M, Sato T, Kikuchi R, Kawahara T, Yamazaki A. Translation and Testing the Reliability and Validity of a Japanese Version of the Paternal Antenatal Attachment Scale (PAAS-J). J Nurs Meas 2024; 32:129-140. [PMID: 37348881 DOI: 10.1891/jnm-2022-0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
Background and Purpose: This study aimed to translate and validate a Japanese version of the Paternal Antenatal Attachment Scale (PAAS-J). Methods: The PAAS-J was translated through a pilot study and a survey of fathers with pregnant partners. Results: The survey involved 189 fathers. A confirmatory factor analysis was performed, but the model fit was poor. Therefore, an exploratory factor analysis (EFA) was performed. Based on the results of the EFA, three items with low interitem correlations and factor loadings were deleted, and a 13-item scale consisting of 2 domains was created. Coefficient alpha was .80. The intraclass correlation coefficient of the retest method was .80, confirming its reliability. Conclusions: The PAAS-J was found to be reliable and valid.
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Affiliation(s)
- Marie Tabayashi
- Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tomoharu Sato
- Department of Biostatistics and Data Science, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ryota Kikuchi
- Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tae Kawahara
- Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Akemi Yamazaki
- Division of Health Sciences, Osaka University Graduate School of Medicine, Osaka, Japan
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Campbell CM, Warshawsky N, Swiger PA, Li P, Olds D, Patrician PA. Evolution of an Instrument: Measuring the Nursing Work Environment: A Scoping Review. J Nurs Meas 2024; 32:47-57. [PMID: 37348888 DOI: 10.1891/jnm-2022-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
Background and Purpose: The Nursing Work Index (NWI) was developed in the 1980s to measure the nursing work environment (NWE). Instruments descended from the NWI continue to measure the NWE today. The purpose of this review was to identify instruments derived from the NWI, examine how they have been used and revised, and evaluate their ability to capture elements of the current work environment. Methods: A scoping literature review. Results: Forty articles were included. Instruments developed from the NWI have been translated into numerous languages and administered to hundreds of thousands of nurses globally. Conclusions: The study of the NWE remains extensive throughout the world. Future research should examine the factorial structure of instrument adaptions and ensure that items are relevant to contemporary nursing practice.
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Affiliation(s)
| | | | | | - Peng Li
- University of Alabama, Birmingham, AL, USA
| | - Danielle Olds
- University of Missouri - Kansas City, School of Medicine & Saint Luke's Hospital, Kansas City, MO, USA
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San-Juan R, Paredes I, Ramírez-Nava E, Delgado-Fernández J, Panero I, Hernández-Ortiz P, Ramírez-Vicente E, Fernández-Ruiz M, López-Medrano F, Corbella L, Rodríguez-Goncer I, Brañas P, Lagares A, Aguado JM. Reduction of Instrumentation-Related Spine Surgical Site Infections After Optimization of Surgical Techniques. A Single Center Retrospective Analysis. Global Spine J 2024; 14:438-446. [PMID: 35712900 PMCID: PMC10802549 DOI: 10.1177/21925682221109557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVE Although surgical risk factors for developing spine surgical site infections (S-SSI) have been identified, the impact of such knowledge in its prevention has not been demonstrated. METHODS We evaluated in 500 patients undergoing spine surgery between 2011 and 2019 at Hospital 12 de Octubre the changes in S-SSI rates over time. Surgical variables independently related to S-SSI were analyzed by univariate and multivariate analysis using binary logistic regression models. A case-control sub-analysis (1:4), matched by the surgical variables identified in the overall cohort was also performed. RESULTS Twenty cases of S-SSI were identified (4%), with a significant decrease in the incidence rate across consecutive time periods (6.6% [2011-2014] vs .86% [2015-2019]; P-value <.0001)). Multivariate analysis identified arthrodesis involving sacral levels (odds ratio [OR]: 2.57; 95% confidence interval [95%CI]: 1.02-6.47; P-value = .044) and instrumentation over 4-8 vertebrae (OR: 2.82; 95%CI: 1.1-7.1; P-value = .027) as independent risk factors for S-SSI. The reduction in the incidence of S-SSI concurred temporally with a reduction in instrumentations involving 4-8 vertebrae (55% vs 21.8%; P-value <.0001) and sacral vertebrae (46.9% vs 24.6%; P-value <.0001) across both periods. The case-control analysis matched by these surgical variables failed to identify other factors independently related to the occurrence of S-SSI. CONCLUSIONS Spinal fusion of more than 4 levels and the inclusion of sacral levels were independently related to the risk of S-SSI. Optimization of surgical techniques by reducing these two types of instrumentation could significantly reduce S-SSI rates.
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Affiliation(s)
- Rafael San-Juan
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Igor Paredes
- Department of Neurosurgery, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Esther Ramírez-Nava
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Juan Delgado-Fernández
- Department of Neurosurgery, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Irene Panero
- Department of Neurosurgery, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Paula Hernández-Ortiz
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Elia Ramírez-Vicente
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Mario Fernández-Ruiz
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Francisco López-Medrano
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Laura Corbella
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Isabel Rodríguez-Goncer
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - Patricia Brañas
- Department of Microbiology, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Hospital Universitario “12 de Octubre”, Madrid, Spain
| | - Alfonso Lagares
- Department of Neurosurgery, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
| | - José María Aguado
- Unit of Infectious Diseases, Hospital Universitario “12 de Octubre”, Instituto de Investigación Sanitaria Hospital “12 de Octubre” (imas12), Complutense University of Madrid, Madrid, Spain
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Ge H, Ma X, Li W, Wang P, Zhang Z, Qin Q, Li S. Development and validation of the Convalescence Symptom Assessment Scale for EsophageCtomy patients. Nurs Open 2024; 11:e2085. [PMID: 38391107 PMCID: PMC10825072 DOI: 10.1002/nop2.2085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 11/22/2023] [Accepted: 12/21/2023] [Indexed: 02/24/2024] Open
Abstract
AIM A specific, valid and reliable measure is much needed to dynamically assess the recovery of symptoms in oesophagectomy patients. This study describes developing and validating the Convalescent Symptom Assessment Scale for oesophagectomy patients (CSAS_EC). DESIGN An instrument development and cross-sectional validation study was conducted. METHODS This study consists of two components: instrument development and psychometric tests. In instrument development, the literature review, qualitative interviews, Delphi method expert consultation and face validation were used to develop and refine scale content. In psychometric tests, the clinical test version scale was used to conduct a cross-sectional in the thoracic surgery department from 17 June to 20 November 2022. The Classical Test Theory and Multidimensional Item Response Theory (MIRT) analyses examined psychometric properties. RESULTS In instrument development, literature review (n = 20), qualitative interviews (n = 21), expert consultation (n = 12) and pre-survey (n = 15) led to the development of the clinical test version scale. In psychometric tests, a total of 331 participants were enrolled. Confirmatory factor analysis and MIRT analysis verified that a model with 28 items in four dimensions was good. The four dimensions were early recovery symptoms, late recovery symptoms, persistent present symptoms and psychosocial symptoms. The Cronbach's α is 0.827. The validity and reliability were demonstrated to be acceptable. CONCLUSIONS The CSAS_EC scale can be used as a tool to evaluate the recovery status of oesophagectomy patients.
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Affiliation(s)
- Hui Ge
- School of NursingAnhui Medical UniversityHefeiChina
- School of NursingPeking UniversityBeijingChina
| | - Xuanxuan Ma
- School of NursingAnhui Medical UniversityHefeiChina
| | - Wen Li
- School of NursingAnhui Medical UniversityHefeiChina
| | - Pan Wang
- School of NursingAnhui Medical UniversityHefeiChina
| | | | - Qiaoyun Qin
- School of NursingAnhui Medical UniversityHefeiChina
| | - Shuwen Li
- School of NursingAnhui Medical UniversityHefeiChina
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García-Luna MA, Jimenez-Olmedo JM, Pueo B, Manchado C, Cortell-Tormo JM. Concurrent Validity of the Ergotex Device for Measuring Low Back Posture. Bioengineering (Basel) 2024; 11:98. [PMID: 38275578 PMCID: PMC10812927 DOI: 10.3390/bioengineering11010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
Highlighting the crucial role of monitoring and quantifying lumbopelvic rhythm for spinal curvature, the Ergotex IMU, a portable, lightweight, cost-effective, and energy-efficient technology, has been specifically designed for the pelvic and lumbar area. This study investigates the concurrent validity of the Ergotex device in measuring sagittal pelvic tilt angle. We utilized an observational, repeated measures design with healthy adult males (mean age: 39.3 ± 7.6 y, body mass: 82.2 ± 13.0 kg, body height: 179 ± 8 cm), comparing Ergotex with a 3D optical tracking system. Participants performed pelvic tilt movements in anterior, neutral, and posterior conditions. Statistical analysis included paired samples t-tests, Bland-Altman plots, and regression analysis. The findings show minimal systematic error (0.08° overall) and high agreement between the Ergotex and optical tracking, with most data points falling within limits of agreement of Bland-Altman plots (around ±2°). Significant differences were observed only in the anterior condition (0.35°, p < 0.05), with trivial effect sizes (ES = 0.08), indicating that these differences may not be clinically meaningful. The high Pearson's correlation coefficients across conditions underscore a robust linear relationship between devices (r > 0.9 for all conditions). Regression analysis showed a standard error of estimate (SEE) of 1.1° with small effect (standardized SEE < 0.26 for all conditions), meaning that the expected average deviation from the true value is around 1°. These findings validate the Ergotex as an effective, portable, and cost-efficient tool for assessing sagittal pelvic tilt, with practical implications in clinical and sports settings where traditional methods might be impractical or costly.
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Affiliation(s)
- Marco A. García-Luna
- Health, Physical Activity, and Sports Technology Research Group, Faculty of Education, University of Alicante, 03690 San Vicente del Raspeig, Spain; (M.A.G.-L.); (B.P.), (J.M.C.-T.)
| | - Jose M. Jimenez-Olmedo
- Health, Physical Activity, and Sports Technology Research Group, Faculty of Education, University of Alicante, 03690 San Vicente del Raspeig, Spain; (M.A.G.-L.); (B.P.), (J.M.C.-T.)
| | - Basilio Pueo
- Health, Physical Activity, and Sports Technology Research Group, Faculty of Education, University of Alicante, 03690 San Vicente del Raspeig, Spain; (M.A.G.-L.); (B.P.), (J.M.C.-T.)
| | - Carmen Manchado
- Sports Coaching and Performance Research Group, Faculty of Education, University of Alicante, 03690 San Vicente del Raspeig, Spain;
| | - Juan M. Cortell-Tormo
- Health, Physical Activity, and Sports Technology Research Group, Faculty of Education, University of Alicante, 03690 San Vicente del Raspeig, Spain; (M.A.G.-L.); (B.P.), (J.M.C.-T.)
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13
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Parolini F, Bertolini G, Santos R, Abreu M, Nogueira AL, Bertoncello D. Unlocking the Potential: Increasing Muscle Strength in Lower Limbs of Youth Soccer Players over Five Weeks through Mat Pilates Training-A Pilot Study. Sensors (Basel) 2024; 24:473. [PMID: 38257568 PMCID: PMC10819903 DOI: 10.3390/s24020473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024]
Abstract
The interest in soccer generally starts during childhood, with children and young people often looking for opportunities in sports. New exercise techniques can be effective in improving training. The aim of this study was to compare the effects on the strength and physical posture of a group practicing Pilates with another not practicing Pilates, both undergoing continuous football training. In this controlled randomized clinical trial, the participants were 15 soccer club members, who had a training frequency of least three times weekly. The sample was divided into a control group (n = 7) of players who did not undergo any therapeutic intervention (only the usual training) and a Pilates group (n = 8) of players who participated in the mat Pilates program. The intervention consisted of fifteen sessions. Postural evaluations were performed using biophotogrammetry and force analysis. Significant improvements were obtained in terms of increased muscle strength (p = 0.001) for the Pilates group, but there were no significant postural alterations when comparing the two groups. Five weeks of mat Pilates was sufficient to increase lower limb muscle strength in young football players. This pilot study indicates that Mat Pilates as a method that could be planned to be included in training.
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Affiliation(s)
- Franciele Parolini
- Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, Uberaba 38025-440, MG, Brazil; (F.P.); (M.A.); (A.L.N.); (D.B.)
- Center for Rehabilitation Research (CIR), School of Health, Polytechnic Institute of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal
- Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory (LABIOMEP), University of Porto, 4200-450 Porto, Portugal
| | - Gladson Bertolini
- Department of Physiotherapy, State University of Western Paraná (UNIOESTE), Cascavel 85819-110, PR, Brazil;
| | - Rubim Santos
- Center for Rehabilitation Research (CIR), School of Health, Polytechnic Institute of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal
| | - Manoela Abreu
- Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, Uberaba 38025-440, MG, Brazil; (F.P.); (M.A.); (A.L.N.); (D.B.)
| | - Ana Laura Nogueira
- Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, Uberaba 38025-440, MG, Brazil; (F.P.); (M.A.); (A.L.N.); (D.B.)
| | - Dernival Bertoncello
- Human Movement Analysis Laboratory (LAHM), Federal University of Triângulo Mineiro (UFTM), Av. Getúlio Guaritá, 159, Nossa Sra. da Abadia, Uberaba 38025-440, MG, Brazil; (F.P.); (M.A.); (A.L.N.); (D.B.)
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14
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Lakomkin N, Eastlack RK, Uribe JS, Park P, Ryu SI, Kretzer R, Mimran RI, Holman P, Veeravagu A, Hassanzadeh H, Johnson MM, Sullivan L, Clark A, Mundis GM. An Integrated 3-Dimentional Navigation System Increases the Accuracy, Efficiency, and Safety of Percutaneous Thoracolumbar Pedicle Screw Placement in Minimally Invasive Approaches: A Randomized Cadaveric Study. Global Spine J 2024:21925682231224394. [PMID: 38165219 DOI: 10.1177/21925682231224394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2024] Open
Abstract
STUDY DESIGN Cadaveric study. OBJECTIVES The purpose of this study was to compare a novel, integrated 3D navigational system (NAV) and conventional fluoroscopy in the accuracy, efficiency, and radiation exposure of thoracolumbar percutaneous pedicle screw (PPS) placement. METHODS Twelve skeletally mature cadaveric specimens were obtained for twelve individual surgeons. Each participant placed bilateral PS at 11 segments, from T8 to S1. Prior to insertion, surgeons were randomized to the sequence of techniques and the side (left or right). Following placement, a CT scan of the spine was obtained for each cadaver, and an independent reviewer assessed the accuracy of screw placement using the Gertzbein grading system. Outcome metrics of interest included a comparison of breach incidence/severity, screw placement time, total procedure time, and radiation exposure between the techniques. Bivariate statistics were employed to compare outcomes at each level. RESULTS A total of 262 screws (131 using each technique) were placed. The incidence of cortical breaches was significantly lower with NAV compared to FG (9% vs 18%; P = .048). Of breaches with NAV, 25% were graded as moderate or severe compared to 39% in the FG subgroup (P = .034). Median time for screw placement was significantly lower with NAV (2.7 vs 4.1 min/screw; P = .012), exclusive of registration time. Cumulative radiation exposure to the surgeon was significantly lower for NAV-guided placement (9.4 vs 134 μGy, P = .02). CONCLUSIONS The use of NAV significantly decreased the incidence of cortical breaches, the severity of screw breeches, screw placement time, and radiation exposure to the surgeon when compared to traditional FG.
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Affiliation(s)
| | - Robert K Eastlack
- Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA
| | - Juan S Uribe
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ, USA
| | - Paul Park
- Department of Neurosurgery, Semmes-Murphey Clinic, Memphis, TN, USA
| | - Stephen I Ryu
- Department of Neurosurgery, Sutter Health, Palo Alto, CA, USA
| | - Ryan Kretzer
- Department of Neurosurgery, Western Neuro, Phoenix, AZ, USA
| | - Ronnie I Mimran
- Department of Neurosurgery, Sutter Health, Palo Alto, CA, USA
| | - Paul Holman
- Department of Neurosurgery, Houston Methodist, Houston, TX, USA
| | - Anand Veeravagu
- Department of Neurosurgery, Stanford University, Palo Alto, CA, USA
| | - Hamid Hassanzadeh
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA, USA
| | - Michele M Johnson
- Department of Neurosurgery, Atlanta Brain and Spine, Atlanta, GA, USA
| | - Linda Sullivan
- Medical writing and Biostatistics, NuVasive, San Diego, CA, USA
| | - Aaron Clark
- Department of Neurosurgery, University of California, San Francisco, CA, USA
| | - Gregory M Mundis
- Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA
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15
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Kuroda R, Harada T, Takahashi H. Fast and artifact-free circular dichroism measurement of solid-state structural changes. Chirality 2024; 36:e3622. [PMID: 37795624 DOI: 10.1002/chir.23622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 10/06/2023]
Abstract
A novel chiroptical spectrophotometer, Multichannel (MC)-circular dichroism (CD), which does not require a wavelength scan and provides artifact-free CD spectra in seconds, was developed by solving the incompatibility problem between data acquisition and modulation timescales. The design and instrumentation are compared with the Universal Chiroptical Spectrophotometer (UCS)-1, which can measure artifact-free CD spectra in the solid state. Enantiomeric single crystals composed of achiral components, α-Ni(H2 O)6 ・SO4 , and achiral films with substantial macroscopic anisotropies were measured on both MC-CD and UCS-1 and compared.
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Affiliation(s)
- Reiko Kuroda
- Frontier Research Institute, Chubu University, Kasugai, Aichi, Japan
| | - Takunori Harada
- Faculty of Science and Technology, Graduate School of Engineering, Oita University, Oita City, Japan
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16
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Gregg N, Kendrick AM, Carter JM, Gittins ME, MacNeill SC. Analysis of alternate material Onyx™ for total knee arthroplasty instrumentation sets. J Osteopath Med 2023; 123:557-561. [PMID: 37552797 DOI: 10.1515/jom-2023-0116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/05/2023] [Indexed: 08/10/2023]
Abstract
CONTEXT A 25-pound weight limit is currently set on containerized instrumentation sets by the Association of periOperative Registered Nurses (AORN) and the Association for the Advancement of Medical Instrumentation (AAMI), in order to reduce strain on the staff and ensure that the sets are not too crowded in order to preserve sterilization and drying of the instruments. This is pushing companies to reduce the weight and number of instrumentation sets for the operating room. One solution has been to explore the viability of new, lighter materials such as Onyx. OBJECTIVES The goal of this study is to evaluate the novel material Onyx as a viable material utilized in reusable total knee arthroplasty (TKA) instrumentation sets utilizing traditional steam sterilization as the sterilization method. METHODS Mechanical and biocompatibility tests according to the American Society for Testing Materials (ASTM) and International Organization for Standardization (ISO) 10,993 were run to evaluate the Onyx Material to see if it would be a viable alternative to the stainless and martensitic steel that is currently being utilized. RESULTS Gross warping and cracking after 10 rounds of sterilization was observed. This was qualitatively worse in the Onyx without a carbon fiber component. The Onyx material did not meet biocompatibility standards for its application. CONCLUSIONS Onyx was determined to not be a viable material for TKA instruments regarding multiple high-pressure and -temperature sterilizations and cytotoxic cell testing.
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Affiliation(s)
- Nathan Gregg
- Ohio University Heritage College of Osteopathic Medicine, Athens, OH, USA
| | - Alyssa M Kendrick
- Ohio University Heritage College of Osteopathic Medicine, Athens, OH, USA
| | - Jill M Carter
- Ohio University Heritage College of Osteopathic Medicine, Athens, OH, USA
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17
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Suedbeck JR, Russell D, Armitano-Lago C, Ludwig EA. The effects of dental hygiene instrument handles on muscle activity production. Int J Dent Hyg 2023; 21:731-737. [PMID: 37721032 DOI: 10.1111/idh.12750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/08/2023] [Accepted: 08/28/2023] [Indexed: 09/19/2023]
Abstract
OBJECTIVE The objective of this study was to compare the effects of 10 commercially available instrument handle designs' mass and diameter on forearm muscle activity during a simulated periodontal scaling experience. METHODS A convenience sample of 25 registered dental hygienists was recruited for this IRB-approved study. Ten commercially available instruments were categorized into four groups based on their masses and diameters: large diameter/light mass, small diameter/light mass, large diameter/heavy mass and small diameter/heavy mass. Participants were randomized to four instruments, one from each group. Participants scaled with each instrument in a simulated oral environment while muscle activity was collected using surface electromyography. Muscle activity was compared among the four instrument group types. RESULTS Muscle activity of the flexor digitorum superficialis was not significantly influenced by instrument mass (p = 0.60) or diameter (p = 0.15). Flexor pollicis longus muscle activity was not significantly influenced by instrument mass (p = 0.81); diameter had a significant effect (p = 0.001), with smaller diameter instruments producing more muscle activity. For the extensor digitorum communis and extensor carpi radialis brevis, instrument mass did not significantly affect muscle activity (p = 0.64, p = 0.43), while diameter narrowly failed to reach significance for both muscles (p = 0.08, p = 0.08); muscle activity for both muscles increased with smaller diameter instruments. CONCLUSION Results from this study indicate instrument diameter is more influential than mass on muscle activity generation; small diameter instruments increased muscle activity generation when compared to large diameter instruments. Future research in real-world settings is needed to determine the clinical impact of these findings.
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Affiliation(s)
- Jessica R Suedbeck
- School of Dental Hygiene, Old Dominion University, Norfolk, Virginia, USA
| | - Daniel Russell
- School of Rehabilitation Sciences, Old Dominion University, Norfolk, Virginia, USA
| | | | - Emily A Ludwig
- School of Dental Hygiene, Old Dominion University, Norfolk, Virginia, USA
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18
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Seah D, Cheng Z, Vendrell M. Fluorescent Probes for Imaging in Humans: Where Are We Now? ACS Nano 2023; 17:19478-19490. [PMID: 37787658 PMCID: PMC10604082 DOI: 10.1021/acsnano.3c03564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 09/26/2023] [Indexed: 10/04/2023]
Abstract
Optical imaging has become an indispensable technology in the clinic. The molecular design of cell-targeted and highly sensitive materials, the validation of specific disease biomarkers, and the rapid growth of clinically compatible instrumentation have altogether revolutionized the way we use optical imaging in clinical settings. One prime example is the application of cancer-targeted molecular imaging agents in both trials and routine clinical use to define the margins of tumors and to detect lesions that are "invisible" to the surgeons, leading to improved resection of malignant tissues without compromising viable structures. In this Perspective, we summarize some of the key research advances in chemistry, biology, and engineering that have accelerated the translation of optical imaging technologies for use in human patients. Finally, our paper comments on several research areas where further work will likely render the next generation of technologies for translational optical imaging.
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Affiliation(s)
- Deborah Seah
- School
of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University Singapore 637371, Singapore
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
| | - Zhiming Cheng
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
- IRR
Chemistry Hub, Institute for Regeneration and Repair, The University of Edinburgh, EH16 4UU Edinburgh, U.K.
| | - Marc Vendrell
- Centre
for Inflammation Research, The University
of Edinburgh, EH16 4UU Edinburgh, U.K.
- IRR
Chemistry Hub, Institute for Regeneration and Repair, The University of Edinburgh, EH16 4UU Edinburgh, U.K.
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Ababneh O, Bsisu I, El-Share’ AI, Alrabayah M, Qudaisat I, Alghanem S, Khreesha L, Ali AM, Rashdan M. Awake Nasal Fiberoptic Intubation in Lateral Position for Severely Obese Patients with Anticipated Difficult Airway: A Randomized Controlled Trial. Healthcare (Basel) 2023; 11:2818. [PMID: 37957962 PMCID: PMC10649994 DOI: 10.3390/healthcare11212818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND Obesity is a well-recognized risk factor for difficult intubation. To safely manage and overcome airway challenges in severely obese patients with a suspected difficult airway, awake fiberoptic intubation is recommended. We aimed to investigate the utility of awake nasal fiberoptic intubation in severely obese patients with suspected difficult airway while positioning them in the lateral decubitus position. METHODS This randomized controlled trial compared lateral and supine positions for awake nasal fiberoptic intubation in severely obese patients with an anticipated difficult airway by assessing the success rate, time needed to secure the airway, peri-procedural adverse events, and postoperative satisfaction of patients. RESULTS Sixty patients with a median age of 37 [inter-quartile range (IQR): 29-44] years were included, of which 47 (78.3%) were females. The median body mass index (BMI) was 45.5 [IQR: 42.5-50.8] kg/m2. The success rate of fiberoptic intubation was 100% in both groups. The time needed to successfully secure the airway was 188 [148.8-228.8] seconds (s) in the lateral position, compared to 214.5 [181.8-280.5] s in supine position (p = 0.019). Intraprocedural cough was more common in the supine position group (n = 8; 26.7%), compared to the lateral position group (n = 3; 10%; p = 0.095). Postoperative sore throat was more common in the lateral position group (n = 12; 40%) compared to the supine position (n = 5; 16.7%; p = 0.045). CONCLUSIONS In conclusion, Intubation in the lateral position is a promising technique that is equivalent to the routine supine position during fiberoptic intubation. In fact, intubation in the lateral position took less time to successfully secure the airway.
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Affiliation(s)
- Omar Ababneh
- Department of Anesthesia and Intensive Care, School of Medicine, The University of Jordan, Amman 11942, Jordan; (M.A.); (I.Q.); (S.A.)
| | - Isam Bsisu
- Department of Anesthesia and Intensive Care, School of Medicine, The University of Jordan, Amman 11942, Jordan; (M.A.); (I.Q.); (S.A.)
- UCSF Center for Health Equity in Surgery and Anesthesia, San Francisco, CA 94158, USA
| | - Ahmad I. El-Share’
- Department of Anesthesia and Pain Management, King Hussein Cancer Center, Amman 11941, Jordan;
| | - Mustafa Alrabayah
- Department of Anesthesia and Intensive Care, School of Medicine, The University of Jordan, Amman 11942, Jordan; (M.A.); (I.Q.); (S.A.)
| | - Ibraheem Qudaisat
- Department of Anesthesia and Intensive Care, School of Medicine, The University of Jordan, Amman 11942, Jordan; (M.A.); (I.Q.); (S.A.)
| | - Subhi Alghanem
- Department of Anesthesia and Intensive Care, School of Medicine, The University of Jordan, Amman 11942, Jordan; (M.A.); (I.Q.); (S.A.)
| | - Lubna Khreesha
- Department of Special Surgeries, School of Medicine, The University of Jordan, Amman 11942, Jordan;
| | - Amani Mohamed Ali
- Department of Undergraduate Studies, School of Medicine, The University of Jordan, Amman 11942, Jordan;
| | - Mohammad Rashdan
- Department of General Surgery, School of Medicine, The University of Jordan, Amman 11942, Jordan;
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Gerroll BR, Kulesa KM, Ault CA, Baker LA. Legion: An Instrument for High-Throughput Electrochemistry. ACS Meas Sci Au 2023; 3:371-379. [PMID: 37868360 PMCID: PMC10588931 DOI: 10.1021/acsmeasuresciau.3c00022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 10/24/2023]
Abstract
Electrochemical arrays promise utility for accelerated hypothesis testing and breakthrough discoveries. Herein, we report a new high-throughput electrochemistry platform, colloquially called "Legion," for applications in electroanalysis and electrosynthesis. Legion consists of 96 electrochemical cells dimensioned to match common 96-well plates that are independently controlled with a field-programmable gate array. We demonstrate the utility of Legion by measuring model electrochemical probes, pH-dependent electron transfers, and electrocatalytic dehalogenation reactions. We consider advantages and disadvantages of this new instrumentation, with the hope of expanding the electrochemical toolbox.
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Affiliation(s)
| | - Krista M. Kulesa
- Department
of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Charles A. Ault
- Department
of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Lane A. Baker
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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21
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AlSaleh R, Kishta AJ, Shamakh AA, Balamesh AA, Alabaidy MH, Alsharari NA, Suleiman SI. Awareness of Appendectomy and Its Complications Among Saudis. Cureus 2023; 15:e46823. [PMID: 37954733 PMCID: PMC10636530 DOI: 10.7759/cureus.46823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2023] [Indexed: 11/14/2023] Open
Abstract
BACKGROUND Acute appendicitis is one of the most common surgical causes of acute abdominal pain in adults and children in the emergency department. It is treated by appendectomy by either an open or laparoscopic approach. Although laparoscopic appendectomy has been used for the last 35 years, there are still indications for an open approach in some cases. OBJECTIVES The aim of this study was to explore the awareness of the general population in Saudi Arabia of appendectomy according to the surgical approach. METHODS A cross-sectional survey using a questionnaire constructed by an expert based on Google Forms (Google, Mountain View, CA) was used from February to March 2022. Variables were demographical data, general knowledge, history of appendectomy, its surgical approach, and postoperative complications, if any. RESULTS The study included 162 participants. The awareness level of acute appendicitis was high (72.2%). History of appendectomy was almost 30% and was significantly more common in males than females (p = 0.045). The rate of postoperative complications showed a significant difference between open (4.3%) vs. laparoscopic approaches (8%) (p = 0.001). CONCLUSION Young, educated Saudis are aware of the importance of surgical intervention for acute appendicitis. However, further hospital-based studies are recommended concerning the role of the surgical approach and its various impacts on postoperative complications.
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Affiliation(s)
- Rehab AlSaleh
- Obstetrics and Gynecology, Ibn Sina National College for Medical Studies, Jeddah, SAU
| | - Ahmed J Kishta
- Medicine, Ibn Sina National College for Medical Studies, Jeddah, SAU
| | | | - Adnan A Balamesh
- Surgery, Ibn Sina National College for Medical Studies, Jeddah, SAU
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22
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Suedbeck JR, Russell D, Armitano-Lago C, Ludwig EA. The Effects of Dental Hygiene Instrument Handles on Muscle Activity Production. J Dent Hyg 2023; 97:143-154. [PMID: 37816616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 08/28/2023] [Indexed: 10/12/2023]
Abstract
Purpose The objective of this study was to compare the effects of ten commercially available instrument handle designs' mass and diameter on forearm muscle activity during a simulated periodontal scaling experience.Methods A convenience sample of 25 registered dental hygienists were recruited for this IRB-approved study. Ten commercially available instruments were categorized into four groups based on their masses and diameters: large diameter/light mass, small diameter/light mass, large diameter/heavy mass, and small diameter/heavy mass. Participants were randomized to four instruments with one from each group. Participants scaled with each instrument in a simulated oral environment while muscle activity was collected using surface electromyography. Muscle activity was compared among the four instrument group types.Results Muscle activity of the flexor digitorum superficialis was not significantly influenced by instrument mass (p=0.60) or diameter (p=0.15). Flexor pollicis longus muscle activity was not significantly influenced by instrument mass (p=0.81); diameter had a significant effect (p=0.001) with smaller diameter instruments producing more muscle activity. For the extensor digitorum communis and extensor carpi radialis brevis, instrument mass did not significantly affect muscle activity (p=0.64, p=0.43), while diameter narrowly failed to reach significance for both muscles (p=0.08, p=0.08); muscle activity for both muscles increased with smaller diameter instruments.Conclusion Results from this study indicate instrument diameter is more influential than mass on muscle activity generation; small diameter instruments increased muscle activity generation when compared to large diameter instruments. Future research in real-world settings is needed to determine the clinical impact of these findings.
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Affiliation(s)
- Jessica R Suedbeck
- Gene W. Hirschfeld School of Dental Hygiene, Old Dominion University, Norfolk, VA, USA
| | - Daniel Russell
- School of Rehabilitation Sciences, Old Dominion University, Norfolk, VA, USA
| | | | - Emily A Ludwig
- Gene W. Hirschfeld School of Dental Hygiene, Old Dominion University, Norfolk, VA, USA
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Mallet F, Poitrasson-Rivière A, Mariano-Goulart D, Agostini D, Manrique A. Measuring myocardial blood flow using dynamic myocardial perfusion SPECT: artifacts and pitfalls. J Nucl Cardiol 2023; 30:2006-2017. [PMID: 36598748 DOI: 10.1007/s12350-022-03165-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/09/2022] [Indexed: 01/05/2023]
Abstract
Dynamic acquisition allows absolute quantification of myocardial perfusion and flow reserve, offering an alternative to overcome the potential limits of relative quantification, especially in patients with balanced multivessel coronary artery disease. SPECT myocardial perfusion is widely available, at lower cost than PET. Dynamic cardiac SPECT is now feasible and has the potential to be the next step of comprehensive perfusion imaging. In order to help nuclear cardiologists potentially interested in using dynamic perfusion SPECT, we sought to review the different steps of acquisition, processing, and reporting of dynamic SPECT studies in order to enlighten the potentially critical pitfalls and artifacts. Both patient-related and technical artifacts are discussed. Key parameters of the acquisition include pharmacological stress, radiopharmaceuticals, and injection device. When it comes to image processing, attention must be paid to image-derived input function, patient motion, and extra-cardiac activity. This review also mentions compartment models, cameras, and attenuation correction. Finally, published data enlighten some facets of dynamic cardiac SPECT while several issues remain. Harmonizing acquisition and quality control procedures will likely improve its performance and clinical strength.
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Affiliation(s)
- Florian Mallet
- Department of Nuclear Medicine, CHU de Caen Normandie, Normandie Univ, UNICAEN UR 4650 PSIR, 14000, Caen, France
- Department of Nuclear Medicine, Jean Perrin Cancer Center, Clermont-Ferrand, France
| | | | - Denis Mariano-Goulart
- Department of Nuclear Medicine, CHU of Montpellier, PhyMedExp, University of Montpellier, INSERM, CNRS, Montpellier, France
| | - Denis Agostini
- Department of Nuclear Medicine, CHU de Caen Normandie, Normandie Univ, UNICAEN UR 4650 PSIR, 14000, Caen, France
| | - Alain Manrique
- Department of Nuclear Medicine, CHU de Caen Normandie, Normandie Univ, UNICAEN UR 4650 PSIR, 14000, Caen, France.
- GIP Cyceron, Campus Jules Horowitz, Boulevard Henri Becquerel, BP 5229, 14074, Caen, France.
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Angrisani L, De Benedetto E, Duraccio L, Lo Regio F, Ruggiero R, Tedesco A. Infrared Thermography for Real-Time Assessment of the Effectiveness of Scoliosis Braces. Sensors (Basel) 2023; 23:8037. [PMID: 37836867 PMCID: PMC10574976 DOI: 10.3390/s23198037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/05/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023]
Abstract
This work proposes an innovative method, based on the use of low-cost infrared thermography (IRT) instrumentation, to assess in real time the effectiveness of scoliosis braces. Establishing the effectiveness of scoliosis braces means deciding whether the pressure exerted by the brace on the patient's back is adequate for the intended therapeutic purpose. Traditionally, the evaluation of brace effectiveness relies on empirical, qualitative assessments carried out by orthopedists during routine follow-up examinations. Hence, it heavily depends on the expertise of the orthopedists involved. In the state of the art, the only objective methods used to confirm orthopedists' opinions are based on the evaluation of how scoliosis progresses over time, often exposing people to ionizing radiation. To address these limitations, the method proposed in this work aims to provide a real-time, objective assessment of the effectiveness of scoliosis braces in a non-harmful way. This is achieved by exploiting the thermoelastic effect and correlating temperature changes on the patient's back with the mechanical pressure exerted by the braces. A system based on this method is implemented and then validated through an experimental study on 21 patients conducted at an accredited orthopedic center. The experimental results demonstrate a classification accuracy slightly below 70% in discriminating between adequate and inadequate pressure, which is an encouraging result for further advancement in view of the clinical use of such systems in orthopedic centers.
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Affiliation(s)
- Leopoldo Angrisani
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy; (L.A.); (F.L.R.)
| | - Egidio De Benedetto
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy; (L.A.); (F.L.R.)
| | - Luigi Duraccio
- Department of Electronics and Telecommunications, Polytechnic University of Turin, 10129 Turin, Italy;
| | - Fabrizio Lo Regio
- Department of Electrical Engineering and Information Technology, University of Naples Federico II, 80125 Naples, Italy; (L.A.); (F.L.R.)
| | | | - Annarita Tedesco
- Department of Chemistry, University of Naples Federico II, 80126 Naples, Italy;
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Wei X, Penkauskas T, Reiner JE, Kennard C, Uline MJ, Wang Q, Li S, Aksimentiev A, Robertson JW, Liu C. Engineering Biological Nanopore Approaches toward Protein Sequencing. ACS Nano 2023; 17:16369-16395. [PMID: 37490313 PMCID: PMC10676712 DOI: 10.1021/acsnano.3c05628] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Biotechnological innovations have vastly improved the capacity to perform large-scale protein studies, while the methods we have for identifying and quantifying individual proteins are still inadequate to perform protein sequencing at the single-molecule level. Nanopore-inspired systems devoted to understanding how single molecules behave have been extensively developed for applications in genome sequencing. These nanopore systems are emerging as prominent tools for protein identification, detection, and analysis, suggesting realistic prospects for novel protein sequencing. This review summarizes recent advances in biological nanopore sensors toward protein sequencing, from the identification of individual amino acids to the controlled translocation of peptides and proteins, with attention focused on device and algorithm development and the delineation of molecular mechanisms with the aid of simulations. Specifically, the review aims to offer recommendations for the advancement of nanopore-based protein sequencing from an engineering perspective, highlighting the need for collaborative efforts across multiple disciplines. These efforts should include chemical conjugation, protein engineering, molecular simulation, machine-learning-assisted identification, and electronic device fabrication to enable practical implementation in real-world scenarios.
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Affiliation(s)
- Xiaojun Wei
- Biomedical Engineering Program, University of South Carolina, Columbia, SC 29208, United States
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, United States
| | - Tadas Penkauskas
- Biophysics and Biomedical Measurement Group, Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States
- School of Engineering, Brown University, Providence, RI 02912, United States
| | - Joseph E. Reiner
- Department of Physics, Virginia Commonwealth University, Richmond, VA 23284, United States
| | - Celeste Kennard
- Biomedical Engineering Program, University of South Carolina, Columbia, SC 29208, United States
| | - Mark J. Uline
- Biomedical Engineering Program, University of South Carolina, Columbia, SC 29208, United States
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, United States
| | - Qian Wang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, United States
| | - Sheng Li
- School of Data Science, University of Virginia, Charlottesville, VA 22903, United States
| | - Aleksei Aksimentiev
- Department of Physics and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
| | - Joseph W.F. Robertson
- Biophysics and Biomedical Measurement Group, Microsystems and Nanotechnology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States
| | - Chang Liu
- Biomedical Engineering Program, University of South Carolina, Columbia, SC 29208, United States
- Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208, United States
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Noureldine MHA, Farooq J, Kumar JI, Pressman E, Coughlin E, Mhaskar R, Alikhani P. Improved Outcomes with Concurrent Instrumentation and Fusion of the Sacroiliac Joint in Patients with Long Lumbosacral Constructs. Global Spine J 2023; 13:2001-2006. [PMID: 35012363 PMCID: PMC10556918 DOI: 10.1177/21925682211069095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
STUDY DESIGN Retrospective Cohort Study. OBJECTIVE Spinal fusion, specifically constructs connected to pelvic bones, has been consistently reported as a predisposing factor to sacroiliac joint (SIJ) pain. The aim of this study is to compare SIJ outcomes in patients with constructs to the pelvis following instrumentation vs instrumentation plus fusion of the SIJ. METHODS Data of study subjects was extracted from a prospectively maintained database as well as retrospectively collected from records at a tertiary academic medical center in the United States between 2018 and 2020. RESULTS A cohort of 103 patients was divided into 2 groups: 65 in Group 1 [S2AI screw without fusion device] and 38 in Group 2 [S2AI screw with fusion device]. None of the patients in Group 2 developed postoperative SIJ pain compared to 44.6% in Group 1. Sacroiliac joint fusion occurred in all Group 2 but none of Group 1 patients. The postoperative Visual Analogue Scale (VAS) for lower extremity (LE) pain (.8 vs .5; P = .03) and postoperative Oswestry Disability Index (ODI) (18.7 vs 14.2; P < .01) were significantly higher in Group 1. The rate of distal junctional break, failure, and/or kyphosis (DJBFK) and time to DJBFK were not significantly different between the two groups, and the rate of DJBFK did not change in the presence of multiple covariates. CONCLUSION The SIJs carry the heavy load of long lumbosacral fusion constructs extending to the pelvis. Simultaneous SIJ instrumentation and fusion decreases the risk of disability, prevents the development of postoperative SIJ pain, and may also protect the S2AI screw from loosening and failure.
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Affiliation(s)
- Mohammad Hassan A. Noureldine
- Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Jeffrey Farooq
- Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Jay I. Kumar
- Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Elliot Pressman
- Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Emily Coughlin
- Department of Internal Medicine, University of South Florida, Tampa, FL, USA
| | - Rahul Mhaskar
- Department of Internal Medicine, University of South Florida, Tampa, FL, USA
| | - Puya Alikhani
- Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL, USA
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Abstract
Surveys provide evidence for the social sciences for knowledge, attitudes, and other behaviors, and, in health care, to quantify qualitative research and to assist in policymaking. A survey-designed research project is about asking questions of individuals, and, from the answers, the researcher can generalize the findings from a sample of respondents to a population. Therefore, this overview can serve as a guide to conducting survey research that can provide answers for practitioners, educators, and leaders, but only if the right questions and methods are used. The main advantage of using surveys is their economical access to participants online. A major disadvantage of survey research is the low response rates in most situations. Online surveys have many limitations that should be expected before conducting a search, and then described after the survey is complete. Any conclusions and recommendations are to be supported by evidence in a clear and objective manner. Presenting evidence in a structured format is crucial but well-developed reporting guidelines are needed for researchers who conduct survey research.
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Affiliation(s)
- Lynda T Goodfellow
- American Association for Respiratory Care and Georgia State University, Atlanta, Georgia.
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28
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Kripfgans OD, Chan HL. Preliminary Experience in Transducer Preparation for Intraoral Imaging. J Ultrasound Med 2023; 42:2155-2166. [PMID: 36965167 PMCID: PMC10518367 DOI: 10.1002/jum.16224] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Intraoral scanning must meet a stringent infection control standard because of contact with the oral mucosa. A preparation protocol is thus presented for increased inquiries about intraoral scanning requirements. Materials required for such a preparation include: a single-use bubble-free gel packet, a gel standoff pad, and a transducer probe cover. Postscan reprocessing of the ultrasound transducer requires high-level disinfection. Examples for proper and improper use are provided as well as limitations of this preparation protocol and recommendations for future development. This guidance meets the current infection control standard and may guide the user to obtain consistent ultrasound image quality.
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Affiliation(s)
- Oliver D Kripfgans
- Department of Radiology, University of Michigan School of Medicine, Ann Arbor, Michigan, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Hsun-Liang Chan
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
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29
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English CM, Kitzhaber ZB, Sanim KRI, Vitzilaios N, Hodgson ME, Richardson TL, Myrick ML. Filter Fluorometer Calibration Without the Fluorometer. Appl Spectrosc 2023; 77:1053-1063. [PMID: 37350765 DOI: 10.1177/00037028231181593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
We recently described a lightweight, low-power, waterproof filter fluorometer using a 180° backscatter geometry for chlorophyll-a (chl-a) detection. Before it was constructed it was modeled to ensure it would have satisfactory performance. This manuscript repeats the modeling process that allows the calibration slope and detection limit for a fluorescent analyte in water to be estimated from system component performance and conventional spectrofluorometry alone. These values are validated by comparison to the experimental result of calibration from the completed instrument. Our model yields a calibration slope of 8.22 mV-L/µg for dissolved chl-a, consistent with the experimentally measured slope of 8.21 mV-L/µg. The detection limit modeled from this slope and an estimate of the baseline noise of the instrument was 0.15 µg/L chl-a, while the measured detection limit using real blank samples was 0.18 µg/L, in 0.1 s differential measurements.
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Affiliation(s)
- Caitlyn M English
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, USA
| | - Zechariah B Kitzhaber
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, USA
| | - Kazi Ragib I Sanim
- Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA
| | - Nikolaos Vitzilaios
- Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA
| | - Michael E Hodgson
- Department of Geography, University of South Carolina, Columbia, SC, USA
| | - Tammi L Richardson
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | - Michael L Myrick
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC, USA
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30
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Laslami K, Khaldoune S, Sy A, Drouri S, Benkiran I. Apical Extrusion: Is It an Inherent Occurrence During Every Endodontic Treatment? Cureus 2023; 15:e45211. [PMID: 37720124 PMCID: PMC10504573 DOI: 10.7759/cureus.45211] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2023] [Indexed: 09/19/2023] Open
Abstract
The aim of this literature review was to analyze all available scientific data on apical extrusion and to identify and associate the possible factors influencing the occurrence of apical extrusion, ranging from the choice of the canal shaping system, the irrigation technique, to the choice of diameter and the apical limit of preparation. A bibliographic search for relevant articles on apical extrusion of debris, irrigants, and bacteria was performed using the following databases: PubMed, Cochrane Library, and ScienceDirect. This search identified articles published between 2010 and 2023 in two languages (French and English). After selective sorting, 25 relevant documents were included. All the studies retained clearly agree on the inherent nature of apical extrusion during endodontic treatment. At the same time, we also understand that the amount of extrusion can be influenced by a number of parameters throughout endodontic therapy. According to this review, despite the undeniable nature of apical extrusion during endodontic therapy, studies with relatable experimental models that approach in vivo conditions are required to establish exploitable conclusions regarding apical extrusion and its prevention.
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Affiliation(s)
- Kaoutar Laslami
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Salma Khaldoune
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Aly Sy
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Sofia Drouri
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
| | - Imane Benkiran
- Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, University Hassan II, Casablanca, MAR
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31
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Zhai Y, Fu X, Xu W. Miniature mass spectrometers and their potential for clinical point-of-care analysis. Mass Spectrom Rev 2023. [PMID: 37610153 DOI: 10.1002/mas.21867] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 08/04/2023] [Accepted: 08/11/2023] [Indexed: 08/24/2023]
Abstract
Mass spectrometry (MS) has become a powerful technique for clinical applications with high sensitivity and specificity. Different from conventional MS diagnosis in laboratory, point-of-care (POC) analyses in clinics require mass spectrometers and analytical procedures to be friendly for novice users and applicable for on-site clinical diagnosis. The recent decades have seen the progress in the development of miniature mass spectrometers, providing a promising solution for clinical POC applications. In this review, we report recent advances of miniature mass spectrometers and their exploration in clinical applications, mainly including the rapid analysis of illegal drugs, on-site monitoring of therapeutic drugs, and detection of biomarkers. With improved analytical performance, miniature mass spectrometers are also expected to apply to more and more clinical applications. Some promising POC analyses that can be performed by miniature mass spectrometers in the future are discussed. Lastly, we also provide our perspectives on the challenges in technical development of miniature mass spectrometers for clinical POC analysis.
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Affiliation(s)
- Yanbing Zhai
- School of Medical Technology, Beijing Institute of Technology, Beijing, China
| | - Xinyan Fu
- School of Medical Technology, Beijing Institute of Technology, Beijing, China
| | - Wei Xu
- School of Medical Technology, Beijing Institute of Technology, Beijing, China
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32
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Zhu Y. Editorial: Terahertz technologies for biosensing and biomedical analysis. Front Bioeng Biotechnol 2023; 11:1268427. [PMID: 37671194 PMCID: PMC10476867 DOI: 10.3389/fbioe.2023.1268427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 08/07/2023] [Indexed: 09/07/2023] Open
Affiliation(s)
- Yiming Zhu
- Terahertz Technology Innovation Research Institute, Terahertz Spectrum and Imaging Technology Cooperative Innovation Center, Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai, China
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33
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de Paula LAN, Norton RS, Paik HJ, Schmerr NC, Williamson PR, Chui TCP, Hahn I. High-Sensitivity Seismometer Development for Lunar Applications. Sensors (Basel) 2023; 23:7245. [PMID: 37631780 PMCID: PMC10459871 DOI: 10.3390/s23167245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/15/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023]
Abstract
Lunar seismology is a critical area of research, providing insights into the Moon's internal structure, composition, and thermal history, as well as informing the design of safe and resilient habitats for future human settlements. This paper presents the development of a state-of-the-art, three-axis broadband seismometer with a low-frequency range of 0.001-1 Hz and a target sensitivity over one order of magnitude greater than previous Apollo-era instruments. The paper details the design, assembly, methodology, and test results. We compare the acceleration noise of our prototype and commercial seismometers across all three axes. Increasing the test mass and reducing its natural frequency may further improve performance. These advancements in seismometer technology hold promise for enhancing our understanding of the Moon's and other celestial bodies' internal structures and for informing the design of future landed missions to ocean worlds.
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Affiliation(s)
- Leandro A. N. de Paula
- Department of Physics, University of Maryland, College Park, MD 20742, USA; (R.S.N.); (H.J.P.)
| | - Ronald S. Norton
- Department of Physics, University of Maryland, College Park, MD 20742, USA; (R.S.N.); (H.J.P.)
| | - Ho Jung Paik
- Department of Physics, University of Maryland, College Park, MD 20742, USA; (R.S.N.); (H.J.P.)
| | | | | | - Talso C. P. Chui
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; (T.C.P.C.); (I.H.)
| | - Inseob Hahn
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; (T.C.P.C.); (I.H.)
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Cheng L, Liu J, Lian L, Duan W, Guan J, Wang K, Liu Z, Wang X, Wang Z, Wu H, Chen Z, Wang J, Jian F. Predicting deep surgical site infection in patients receiving open posterior instrumented thoracolumbar surgery: A-DOUBLE-SSI risk score - a large retrospective multicenter cohort study in China. Int J Surg 2023; 109:2276-2285. [PMID: 37204435 PMCID: PMC10442129 DOI: 10.1097/js9.0000000000000461] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/01/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND To develop a practical prediction model to predict the risk of deep surgical site infection (SSI) in patients receiving open posterior instrumented thoracolumbar surgery. METHODS Data of 3419 patients in four hospitals from 1 January 2012 to 30 December 2021 were evaluated. The authors used clinical knowledge-driven, data-driven, and decision tree model to identify predictive variables of deep SSI. Forty-three candidate variables were collected, including 5 demographics, 29 preoperative, 5 intraoperative, and 4 postoperative variables. According to model performance and clinical practicability, the best model was chosen to develop a risk score. Internal validation was performed by using bootstrapping methods. RESULTS After open posterior instrumented thoracolumbar surgery, 158 patients (4.6%) developed deep SSI. The clinical knowledge-driven model yielded 12 predictors of deep SSI, while the data-driven and decision tree model produced 11 and 6 predictors, respectively. A knowledge-driven model, which had the best C-statistics [0.81 (95% CI: 0.78-0.85)] and superior calibration, was chosen due to its favorable model performance and clinical practicality. Moreover, 12 variables were identified in the clinical knowledge-driven model, including age, BMI, diabetes, steroid use, albumin, duration of operation, blood loss, instrumented segments, powdered vancomycin administration, duration of drainage, postoperative cerebrospinal fluid leakage, and early postoperative activities. In bootstrap internal validation, the knowledge-driven model still showed optimal C-statistics (0.79, 95% CI: 0.75-0.83) and calibration. Based on these identified predictors, a risk score for deep SSI incidence was created: the A-DOUBLE-SSI (Age, D [Diabetes, Drainage], O [duration of Operation, vancOmycin], albUmin, B [BMI, Blood loss], cerebrospinal fluid Leakage, Early activities, Steroid use, and Segmental Instrumentation) risk score. Based on the A-DOUBLE-SSI score system, the incidence of deep SSI increased in a graded fashion from 1.06% (A-DOUBLE-SSIs score ≤8) to 40.6% (A-DOUBLE-SSIs score>15). CONCLUSIONS The authors developed a novel and practical model, the A-DOUBLE-SSIs risk score, that integrated easily accessible demographics, preoperative, intraoperative, and postoperative variables and could be used to predict individual risk of deep SSI in patients receiving open posterior instrumented thoracolumbar surgery.
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Affiliation(s)
- Lei Cheng
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Jiesheng Liu
- Department of Spine Surgery, Beijing Bo’ai Hospital, Rehabilitation Research Center, School of Rehabilitation, Capital Medical University
| | - Liyi Lian
- Department of Orthopedics, Shenzhen Baoan People’s Hospital, Shenzhen, China
| | - Wanru Duan
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Jian Guan
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Kai Wang
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Zhenlei Liu
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Xingwen Wang
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Zuowei Wang
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Hao Wu
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Zan Chen
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
| | - Jianzhen Wang
- Department of Neurosurgery, Chinese PLA General Hospital, The 3rd Medical Center, Beijing
| | - Fengzeng Jian
- Department of Neurosurgery, Xuanwu Hospital, China International Neuroscience Institute
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35
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Casas FJ, Pascual-Cisneros G. Mach-Zehnder Modulators for Microwave Polarization Measurement in Astronomy Applications. Sensors (Basel) 2023; 23:6300. [PMID: 37514594 PMCID: PMC10385403 DOI: 10.3390/s23146300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023]
Abstract
This paper presents a study of the performances of different Mach-Zehnder modulation technologies with applications in microwave polarimeters based on a near-infrared (NIR) frequency up-conversion stage, allowing for optical correlation and signal detection at a wavelength of 1550 nm. Commercial Mach-Zehnder modulators (MZMs) are traditionally implemented using LiNbO3 technology, which does not enable integration for the fabrication of MZMs. In this work, we propose the use of an alternative technology based on InP, which allows for integration in the fabrication process. In this way, it is possible to obtain advantages in terms of bandwidth, cost, and size reductions, which yield results that are very interesting for wide-band applications such as microwave instrumentation for the study of the cosmic microwave background (CMB). Here, we describe and compare the modulation performances of different MZMs, with one commercial unit presenting a higher bandwidth than those in previous works, and another three InP integrated units provided by the Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institute (HHI). Then, these modulators were coupled to a microwave polarimeter demonstrator, which has also been presented previously, to compare the polarization measurement performances of each of the MZMs.
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Affiliation(s)
- Francisco J Casas
- Instituto de Física de Cantabria (IFCA), Avda. Los Castros s/n, 39005 Santander, Spain
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Anton G, Alsalahi A, Yoon EJ, Turnbull J, Dragonette J, Richards B, Tong D, Soo TM. Fusion and patient-reported outcomes after navigated decortication and direct arthrodesis in minimally invasive sacroiliac joint fusion using cylindrical threaded implants: a case series and literature review. Neurosurg Focus 2023; 55:E2. [PMID: 37392775 DOI: 10.3171/2023.4.focus23145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/14/2023] [Indexed: 07/03/2023]
Abstract
OBJECTIVE Sacroiliac joint (SIJ) dysfunction is a significant cause of back pain. Despite recent advances in minimally invasive (MIS) SIJ fusion, the fusion rate remains controversial. This study sought to demonstrate that a navigated decortication and direct arthrodesis technique in MIS SIJ fusion would result in satisfactory fusion rates and patient-reported outcomes (PROs). METHODS The authors retrospectively reviewed consecutive patients who underwent MIS SIJ fusion from 2018 to 2021. SIJ fusion was performed using cylindrical threaded implants and SIJ decortication employing the O-arm surgical imaging system and StealthStation. The primary outcome was fusion, evaluated using CT at 6, 9, and 12 months postoperatively. Secondary outcomes included revision surgery, time to revision surgery, visual analog scale (VAS) score for back pain, and the Oswestry Disability Index (ODI), measured preoperatively and 6 and 12 months postoperatively. Patient demographics and perioperative data were also collected. PROs over time were analyzed using ANOVA followed by a post hoc analysis. RESULTS One hundred eighteen patients were included in this study. The mean (± SD) patient age was 58.56 ± 13.12 years, and most patients were female (68.6% vs 31.4% male). There were 19 smokers (16.1%) with an average BMI of 29.92 ± 6.73. One hundred twelve patients (94.9%) underwent successful fusion on CT. The ODI improved significantly from baseline to 6 months (Δ7.73, 95% CI 2.43-13.03, p = 0.002) and from baseline to 12 months (Δ7.54, 95% CI 1.65-13.43, p = 0.008). Similarly, VAS back pain scores improved significantly from baseline to 6 months (Δ2.31, 95% CI 1.07-3.56, p < 0.001) and from baseline to 12 months (Δ1.63, 95% CI 0.25-3.00, p = 0.015). CONCLUSIONS MIS SIJ fusion with navigated decortication and direct arthrodesis was associated with a high fusion rate and significant improvement in disability and pain scores. Further prospective studies examining this technique are warranted.
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Young PR, Hebert JS, Marasco PD, Carey JP, Schofield JS. Advances in the measurement of prosthetic socket interface mechanics: a review of technology, techniques, and a 20-year update. Expert Rev Med Devices 2023; 20:729-739. [PMID: 37537898 PMCID: PMC10581694 DOI: 10.1080/17434440.2023.2244418] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 08/01/2023] [Indexed: 08/05/2023]
Abstract
INTRODUCTION A key determinant of prosthesis use is the quality of fit of the prosthetic socket. The socket surrounds the residual limb and applies the appropriate force distribution to the soft tissues to maintain suspension, support, and stabilization as well as translate limb movement to prosthesis movement. The challenge in socket fabrication lays in achieving geometry that provides the appropriate force distribution at physiologically appropriate locations; a task dependent on the understanding of interface tissue-mechanics. AREAS COVERED In the last 20 years substantial advancements in sensor innovation and computational power have allowed researchers to quantify the socket-residual limb interface; this paper reviews prominent measurement and sensing techniques described in literature over this time frame. Advantages and short comings of each technique are discussed with a focus on translation to clinical environments. EXPERT OPINION Prosthetic sockets directly influence comfort, device use, user satisfaction, and tissue health. Advancements in instrumentation technology have unlocked the possibility of sophisticated measurement systems providing quantitative data that may work in tandem with a clinician's heuristic expertise during socket fabrication. If validated, many of the emerging sensing technologies could be implemented into a clinical setting to better characterize how patients interact with their device and help inform prosthesis fabrication and assessment techniques.
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Affiliation(s)
- Peyton R Young
- Department of Mechanical and Aerospace Engineering, UC Davis, One Shields Ave., Davis, CA 95616
| | - Jacqueline S. Hebert
- Faculty of Medicine & Dentistry, Division of Physical Medicine & Rehabilitation, University of Alberta, 5005 Katz building, Edmonton, Alberta, Canada, T5G 0B7
- Glenrose Rehabilitation Hospital, Alberta Health Services, 10230 111 Avenue, Edmonton, Alberta, Canada, T5G 0B7
| | - Paul D. Marasco
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, 9500 Euclid, Avenue ND20, Cleveland, OH 44195
| | - Jason P. Carey
- Faculty of Engineering, Deans Office, University of Alberta, 10-203 Donadeo Innovation Centre for Engineering, Edmonton, Alberta, Canada, T6G 2G8
| | - Jonathon S. Schofield
- Department of Mechanical and Aerospace Engineering, UC Davis, One Shields Ave., Davis, CA 95616
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Kim YJ, Lee G, Choi S. Validation of the Korean Version of Patient-Centered Care Tool: For Outpatients. Patient Prefer Adherence 2023; 17:1525-1540. [PMID: 37405193 PMCID: PMC10317544 DOI: 10.2147/ppa.s411109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/03/2023] [Indexed: 07/06/2023] Open
Abstract
Aim The objective of this study was to assess the validity and reliability of the Korean version of the patient-centered care (K-PCC) instrument for outpatients. The study was conducted due to the absence of a measurement tool specifically designed to evaluate patient-centered care for outpatients. Design This study is a methodological study to verify the validity and reliability of the Korean version of Patient-Centered Care (K-PCC) to measure patient-centeredness for outpatients. Methods As a first step for the evaluation of the tool, the content validity was verified by expert panel. Then, a total of 400 outpatients were recruited, and construct validity was verified through confirmatory factor analysis (CFA) as the second step for the evaluation of the tool. The convergent and discriminant validity of the tool was verified by calculating the standardized factor loads, construct reliability (CR), and average variance extracted (AVE), and calculating the correlation square between the factors as the third and fourth steps for the evaluation of the tool. And as a fifth step for the evaluation of the tool, criterion validity was evaluated by comparing the correlation with the patient-centeredness measurement tool for inpatients (PEx-inpatient). In estimating reliability, internal consistency reliability coefficients were calculated. Results The confirmatory factor analysis supported good fit for the Korean patient-centered care instrument (K-PCC), and the eight-factor structure was validated. The scale comprises 21 items across eight factors: patient preferences (4 items), physical comfort (2 items), coordination of care (2 items), continuity and transition (3 items), emotional support (2 items), access to medical care (3 items), information and education (2 items), and family and friends (3 items). The Cronbach's alphas ranging between 0.73 and 0.88. Conclusion The Korean patient-centered primary care instrument is a valid and reliable scale to measure patient-centered care for outpatients in the Korean medical environment.
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Affiliation(s)
- Yeo Ju Kim
- College of Nursing, Ewha Womans University, Seoul, South Korea
- Inje University Ilsan-Paik Hospital, Goyang, Gyeonggi-do, South Korea
| | - Gunjeong Lee
- College of Nursing, Ewha Womans University, Seoul, South Korea
| | - Sunyeob Choi
- College of Nursing, Ewha Womans University, Seoul, South Korea
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Papatheocharidou C, Samanidou V. Two-Dimensional High-Performance Liquid Chromatography as a Powerful Tool for Bioanalysis: The Paradigm of Antibiotics. Molecules 2023; 28:5056. [PMID: 37446719 DOI: 10.3390/molecules28135056] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
The technique of two-dimensional high-performance liquid chromatography has managed to gain the recognition it deserves thanks to the advantages of satisfactory separations it can offer compared to simple one-dimensional. This review presents in detail key features of the technique, modes of operation, and concepts that ensure its optimal application and consequently the best possible separation of even the most complex samples. Publications focusing on the separation of antibiotics and their respective impurities are also presented, providing information concerning the analytical characteristics of the technique related to the arrangement of the instrument and the chromatographic conditions.
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Affiliation(s)
- Christina Papatheocharidou
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Victoria Samanidou
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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Meaney P, Augustine R, Welteke A, Pfrommer B, Pearson AM, Brisby H. Transmission-Based Vertebrae Strength Probe Development: Far Field Probe Property Extraction and Integrated Machine Vision Distance Validation Experiments. Sensors (Basel) 2023; 23:4819. [PMID: 37430734 DOI: 10.3390/s23104819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/05/2023] [Accepted: 05/15/2023] [Indexed: 07/12/2023]
Abstract
We are developing a transmission-based probe for point-of-care assessment of vertebrae strength needed for fabricating the instrumentation used in supporting the spinal column during spinal fusion surgery. The device is based on a transmission probe whereby thin coaxial probes are inserted into the small canals through the pedicles and into the vertebrae, and a broad band signal is transmitted from one probe to the other across the bone tissue. Simultaneously, a machine vision scheme has been developed to measure the separation distance between the probe tips while they are inserted into the vertebrae. The latter technique includes a small camera mounted to the handle of one probe and associated fiducials printed on the other. Machine vision techniques make it possible to track the location of the fiducial-based probe tip and compare it to the fixed coordinate location of the camera-based probe tip. The combination of the two methods allows for straightforward calculation of tissue characteristics by exploiting the antenna far field approximation. Validation tests of the two concepts are presented as a precursor to clinical prototype development.
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Affiliation(s)
- Paul Meaney
- Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA
- Electrical Engineering Department, Uppsala University, 751 05 Uppsala, Sweden
| | - Robin Augustine
- Electrical Engineering Department, Uppsala University, 751 05 Uppsala, Sweden
| | - Adrian Welteke
- Electrical Engineering Department, Helmut Schmidt University, 22043 Hamburg, Germany
| | | | - Adam M Pearson
- Geisel School of Medicine, Dartmouth College, Lebanon, NH 03766, USA
| | - Helena Brisby
- Orthopedic Department, Sahlgrenska Hospital, 413 45 Gothenburg, Sweden
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Urichuk M, Purcell D, Scollie S. Validity and reliability of integrated pressure level real-ear-to-coupler difference measurements. Int J Audiol 2023:1-10. [PMID: 37129231 DOI: 10.1080/14992027.2023.2205009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
OBJECTIVES (1) To validate the measurement of foam-tip real-ear-to-coupler differences (wRECD) using an integrated pressure level (IPL) method and (2) to compare the reliability of this method to SPL-based measurement of the wRECD. DESIGN SPL-based wRECD and the proposed IPL wRECD measurement were completed bilaterally. Test-retest reliability of IPL wRECD was determined with full re-insertion into the ear canal and compared to published SPL wRECD test-retest data. STUDY SAMPLE 22 adults with normal hearing and middle ear status were recruited. RESULTS Differences between SPL-based wRECD and IPL wRECD measurements were within 1.51 dB on average below 5000 Hz. At and above 5000 Hz, IPL wRECD exceeded SPL wRECDs by 6.11 dB on average. The average test-retest difference for IPL wRECD across all assessed frequencies was 0.75 dB with the greatest improvements in reliability found below 750 Hz and above 3000 Hz. CONCLUSIONS IPL wRECD yielded improved estimates compared to SPL wRECD in high frequencies, where standing-wave interference is present. Independence from standing wave interference resulted in increased wRECD values above 4000 Hz using the IPL measurement paradigm. IPL wRECD is more reliable than SPL wRECD, does not require precise probe-microphone placement, and provides a wider valid wRECD bandwidth than SPL-based measurement.
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Affiliation(s)
- Matthew Urichuk
- School of Communication Sciences and Disorders, Western University, London, Ontario, Canada
- Health and Rehabilitation Sciences Graduate Program, Western University, London, Ontario, Canada
| | - David Purcell
- School of Communication Sciences and Disorders, Western University, London, Ontario, Canada
- Health and Rehabilitation Sciences Graduate Program, Western University, London, Ontario, Canada
- National Center for Audiology, Western University, London, Ontario, Canada
| | - Susan Scollie
- School of Communication Sciences and Disorders, Western University, London, Ontario, Canada
- Health and Rehabilitation Sciences Graduate Program, Western University, London, Ontario, Canada
- National Center for Audiology, Western University, London, Ontario, Canada
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Figueira VZ, Vivacqua FD, Duarte MAH, Vasconcelos BC, Vivacqua-Gomes N. Ex vivo evaluation of the influence of cervical preflaring on choice of apical reciprocating file. Gen Dent 2023; 71:73-77. [PMID: 37083618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The aim of this study was to evaluate the influence of cervical preflaring on the choice of reciprocating file size (Reciproc system) and the difficulty in reaching the working length for instrumentation of molar root canals. A total of 352 human molars were divided into 2 groups of 176 molars each. In the no preflaring (NPF) group, no cervical preflaring was performed. A reciprocating file (R25, R40, or R50) was selected, and instrumentation was performed in accordance with the manufacturer's recommendations. In the preflaring (PF) group, a file was selected, and cervical preflaring was performed with the use of No. 30/.10 or No. 25/.08 orifice shaper instruments. The clinician then selected a new reciprocating file or used the originally selected file to perform the instrumentation as done in the NPF group. Any changes in choice of file after preflaring were documented for the PF group, and the number of insertions required to reach the working length was recorded for both groups. After preflaring, the selected file was changed from R25 to R40 in 20.08% of canals, from R25 to R50 in 0.40% of canals, and from R40 to R50 in 42.14% of canals. After preflaring, 2.88% of the canals with an initial selection of an R50 file required an instrument with a larger diameter for effective preparation. There was a statistically significant difference between the groups for all file size changes (P < 0.001; χ² test). The mean numbers of instrument insertions needed for the NPF and PF groups, respectively, were 4.09 and 2.42 (R25); 3.49 and 2.31 (R40); and 2.70 and 1.81 (R50). There was a statistically significant difference between the groups for all file sizes (P < 0.001; Kruskal-Wallis test). Under the conditions of this study, preflaring enabled a more suitable selection of reciprocating instrument, which, in turn, allowed for fewer insertions of the file up to the working length.
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Hoerig C, Hoang QV, Aichele J, Catheline S, Mamou J. High-frequency ultrasound point-of-care device to quantify myopia-induced microstructural changes in the anterior sclera. Ophthalmic Physiol Opt 2023; 43:544-557. [PMID: 36943177 PMCID: PMC10183215 DOI: 10.1111/opo.13122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 02/06/2023] [Accepted: 02/28/2023] [Indexed: 03/23/2023]
Abstract
PURPOSE To develop a point-of-care (POC) device using high-frequency ultrasound (US) for evaluating microstructural changes in the anterior sclera associated with myopia. METHODS The proposed POC device must satisfy four primary requirements for effective clinical use: the measurement component is handheld; the software must be simple and provide real-time feedback; patient safety and health data security requirements set forth by relevant governing bodies must be satisfied and the measurement data must have sufficient signal-to-noise ratio (SNR) and repeatability. Radiofrequency (RF) echo data acquired by the POC device will be processed using our quantitative US methods to characterise tissue microstructure and biomechanical properties. RESULTS All stated requirements have been met in the developed POC device. The high-frequency transducer is housed in a custom, 3D-printed, pen-like holder that allows for easy measurements of the anterior sclera. Custom software provides a simple interface for data acquisition, real-time data display and secure data storage. Exposimetry measurements of the US pressure field indicate device compliance with United States Food and Drug Administration limits for ophthalmic US. In vivo measurements on a volunteer suggest the RF data SNR and acquisition consistency are suitable for quantitative analysis. CONCLUSIONS A fully functioning POC device using high-frequency US has been created for evaluating the microstructure of the anterior sclera. Planned studies using the POC device to scan the eyes of myopia patients will help clarify how the anterior sclera microstructure may be affected by myopia. If effective, this portable, inexpensive and user-friendly system could be an important part of routine eye examinations.
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Affiliation(s)
- Cameron Hoerig
- Department of Radiology, Weill Cornell Medicine, New York, New York, USA
| | - Quan V. Hoang
- Singapore Eye Research Institute, Singapore National Eye Centre, Duke-NUS, Singapore
- Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore
- Department of Ophthalmology, Columbia University Irving Medical Center, New York, New York, USA
| | - Johannes Aichele
- Department of Earth Sciences, Institute of Geophysics, Swiss Federal Institute of Technology, Zurich, Switzerland
| | - Stefan Catheline
- Univ Lyon, Université Lyon 1, Centre Léon Bérard, INSERM, LabTAU, F-69003, Lyon, France
| | - Jonathan Mamou
- Department of Radiology, Weill Cornell Medicine, New York, New York, USA
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Abstract
Evidence supports that older adults with cognitive impairment can reliably communicate their values and choices, even as cognition may decline. Shared decision-making, including the patient, family members, and healthcare providers, is critical to patient-centered care. The aim of this scoping review was to synthesize what is known about shared decision-making in persons living with dementia. A scoping review was completed in PubMed, CINAHL, and Web of Science. Keywords included content areas of dementia and shared decision-making. Inclusion criteria were as follows: description of shared or cooperative decision making, cognitively impaired patient population, adult patient, and original research. Review articles were excluded, as well as those for which the formal healthcare provider was the only team member involved in the decision-making (e.g., physician), and/or the patient sample was not cognitively impaired. Systematically extracted data were organized in a table, compared, and synthesized. The search yielded 263 non-duplicate articles that were screened by title and abstract. Ninety-three articles remained, and the full text was reviewed; 32 articles were eligible for this review. Studies were from across Europe (n = 23), North America (n = 7), and Australia (n = 2). The majority of the articles used a qualitative study design, and 10 used a quantitative study design. Categories of similar shared decision-making topics emerged, including health promotion, end-of-life, advanced care planning, and housing decisions. The majority of articles focused on shared decision-making regarding health promotion for the patient (n = 16). Findings illustrate that shared decision-making requires deliberate effort and is preferred among family members, healthcare providers, and patients with dementia. Future research should include more robust efficacy testing of decision-making tools, incorporation of evidence-based shared decisionmaking approaches based on cognitive status/diagnosis, and consideration of geographical/cultural differences in healthcare delivery systems.
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Affiliation(s)
| | | | - Dan Wilson
- Health Sciences Library, 2358University of Virginia, USA
| | - Laura Jepson
- School of Nursing, 2358University of Virginia, USA
| | - Soojung Ahn
- School of Nursing, Vanderbilt University, USA
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Rikhotso O, Morodi TJ, Masekameni DM. Hearing Conservation Programme Costs at Selected South African Companies. Ann Work Expo Health 2023; 67:448-461. [PMID: 36719046 DOI: 10.1093/annweh/wxac097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 12/22/2022] [Indexed: 02/01/2023] Open
Abstract
The Occupational Health and Safety Act 1993 and its attending Regulations in South Africa, require employers to conduct cost analysis studies to inform decision-making related to exposure control for occupational health hazard such as noise. Cost analysis, as per South African National Standard/ISO 31000 risk assessment guideline, is an important input for the decision-making process of the risk management process. The costs of administrating a hearing conservation programme intended to minimise noise-induced hearing loss is an example of a cost analysis. This study enrolled four companies from the South African manufacturing and utilities sectors with the aim of establishing whether cost analysis is included during the noise risk assessment process; and determining administration costs of HCP administration. A HCP cost questionnaire was completed by each company's occupational hygiene professionals and risk officers. None of the companies in the study included cost analysis in their respective risk assessment processes. The overall costs, derived from the HCP cost item questionnaire, was much greater for Company A (4 290 014 Rands) than all of the other companies combined (970 685 Rands). Hearing protection device expenditures across the four companies were the greatest expense, while audiometry was the smallest expense owing to service internalisation. The HCP expenditures are incurred on periodic basis, yearly or biennial, and are internalised in companies as direct costs. Cost analysis can enhance the noise risk assessment process by providing additional input to support the decision-making process related to noise control. This challenges the occupational hygiene profession to pursue new frontiers and decision-making models in the scope of noise risk management, beyond noise measurements and hearing protection device use recommendation.
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Affiliation(s)
- Oscar Rikhotso
- Department of Environmental Health, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Thabiso John Morodi
- Department of Environmental Health, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa
| | - Daniel Masilu Masekameni
- Occupational Health Division, School of Public Health, University of Witwatersrand, Parktown, 2193, South Africa
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Dayananda B, Owen S, Kolobaric A, Chapman J, Cozzolino D. Pre-processing Applied to Instrumental Data in Analytical Chemistry: A Brief Review of the Methods and Examples. Crit Rev Anal Chem 2023:1-9. [PMID: 37053040 DOI: 10.1080/10408347.2023.2199864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
The field of analytical chemistry has been significantly advanced by the availability of state-of-the-art instrumentation, allowing for the development of novel applications in this field. However, in many cases, the direct interpretation of the recorded data is often not straightforward, hence some level of pre-processing is required (e.g., baseline correction, derivatives, normalization, smoothing). These techniques have become a critical first step for the successful analysis of the data recorded, and it is recommended to use them before the application of chemometrics (e.g., classification, calibration development). The aim of this paper is to provide with an overview of the most used pre-processing methods applied to instrumental analytical methods (e.g., spectroscopy, chromatography). Examples of their application in near infrared and UV-VIS spectroscopy as well as in gas chromatography will be also discussed. Overall, this paper provides with a comprehensive understanding of pre-processing techniques in analytical chemistry, highlighting their importance during the analysis and interpretation of data, as well as during the development of accurate and reliable chemometric models.
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Affiliation(s)
- B Dayananda
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - S Owen
- School of Science, RMIT University, Melbourne, Victoria, Australia
| | - A Kolobaric
- School of Science, RMIT University, Melbourne, Victoria, Australia
| | - J Chapman
- School of Science, RMIT University, Melbourne, Victoria, Australia
| | - D Cozzolino
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation (QAAFI), The University of Queensland, Brisbane, Queensland, Australia
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Khoshnood Z, Bagherian S, Iranmanesh S, Dehghan M, Rafati F. The design and psychometric evaluation of the Supportive-Care Needs Scale (ZOKH-SCNS29) in patients living with cancer. Int J Palliat Nurs 2023; 29:159-168. [PMID: 37079472 DOI: 10.12968/ijpn.2023.29.4.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
BACKGROUND Understanding the needs of cancer patients and planning to meet these needs is a major concern of the health system. AIM The present study aimed to design and conduct a psychometric evaluation of supportive-care needs scale in patients with cancer. METHODS This study was conducted in both qualitative and quantitative stages. In the qualitative phase, the questionnaire items were generated by analysing the data from 16 interviews, after which, face, content and construct validity were tested. To construct the validity, the questionnaire was completed by 229 cancer patients. The reliability of the questionnaire was assessed by internal consistency. Data were analysed using SPSS (version 18). FINDINGS In this study, 4 factors were extracted from 29 items through exploratory factor analysis: 'Need to be understood by the spouse and family' (10 items), 'Need to manage existential and psychological challenges' (7 items), 'Need to manage lack of knowledge about the disease' (7 items), 'Need organisational-therapeutic support '(5 items). These factors accounted for 50.1%. of the total variance. Internal consistency was 0.88, and also the Cronbach's alpha coefficient was also 0.89 after construct validity for the scale items'. The Cronbach's alpha was 0.91 after the construct validity. CONCLUSION The findings of the present study showed that this supportive care needs scale is a valid and reliable scale for identifying the supportive care needs of patients with cancer.
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Affiliation(s)
- Zohreh Khoshnood
- Assistant Professor, Department of Community Health Nursing, Razi Faculty of Nursing and Midwifery, Kerman University of Medical Sciences, Kerman, Iran
| | - Samaneh Bagherian
- Assistant Professor, Department of Operation Room, School of Para Medical Sciences, Birjand University of Medical Sciences, Birjand, Iran
| | - Sedigheh Iranmanesh
- Associate Professor, Department of Psychiatric Nursing, Razi Faculty of Nursing and Midwifery, Kerman University of Medical Sciences, Kerman, Iran
| | - Mahlagha Dehghan
- Assistant Professor, Department of Critical Care Nursing, Razi Faculty of Nursing and Midwifery, Kerman University of Medical Sciences, Kerman, Iran
| | - Foozieh Rafati
- Assistant Professor, Department of Nursing, Jiroft University of Medical Science, Jiroft, Iran
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Ishikawa Y, Ohashi M, Hirano T, Matsuda M, Akabane T, Kanno H, Hashimoto K, Handa K, Aizawa T, Suzuki T, Shimamura Y, Watanabe K. Mid- to Long-Term Outcomes After Resection of Thoracic Dumbbell Tumors Managed by Laminectomy and Unilateral Total Facetectomy Without Instrumented Fusion. Global Spine J 2023; 13:771-780. [PMID: 33973481 DOI: 10.1177/21925682211008836] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
STUDY DESIGN Retrospective multicenter study. OBJECTIVE To evaluate mid- to long-term surgical outcomes of thoracic dumbbell tumors managed by laminectomy and unilateral total facetectomy without instrumented fusion. METHODS A total of 15 patients with thoracic dumbbell tumors who underwent primary resection by laminectomy and unilateral total facetectomy without spinal instrumented fusion between 2000 and 2015 were reviewed. Patient characteristics, surgical outcomes (including spinal alignment and stability), disc degeneration, pain, disability, and health-related quality of life were evaluated. Additionally, to analyze the impact of the affected levels on these outcomes, we divided the patients into 2 groups: a middle thoracic group and a thoracolumbar group. RESULTS The mean duration of follow-up was 100.5 months (range, 36-190 months). The affected level was T3-T4 or below in all patients. Although the local kyphosis angle (8.1° to 12.7°), thoracic kyphosis angle (25.6° to 33.9°), and coronal Cobb angle (6.6° to 9.5°) significantly increased from preoperative to the final visit (P ≤ .02), no patient demonstrated spinal instability. From magnetic resonance imaging, no patient had a worse grade of disc degeneration in the affected level than those in the adjacent levels. The percentage of patients who presented with an Oswestry disability index ≤ 22% was 80%. Moreover, the surgical region did not adversely affect the outcomes. No patient required additional surgery due to spinal instability or deformity. CONCLUSIONS Unilateral total facetectomy without fusion to resect thoracic dumbbell tumors caused neither spinal deformity nor instability requiring additional surgery at the mid- to long-term follow-up.
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Affiliation(s)
- Yuya Ishikawa
- Department of Regenerative and Transplant Medicine, Division of Orthopaedic Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masayuki Ohashi
- Department of Regenerative and Transplant Medicine, Division of Orthopaedic Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Toru Hirano
- Department of Orthopaedic Surgery, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Minami-Uonuma, Niigata, Japan
| | - Michiharu Matsuda
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeru Akabane
- Department of Orthopaedic Surgery, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Haruo Kanno
- Department of Orthopaedic Surgery, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Ko Hashimoto
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kyoichi Handa
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Toshimi Aizawa
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomoto Suzuki
- Department of Orthopaedic Surgery, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yukihide Shimamura
- Department of Orthopaedic Surgery, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Kei Watanabe
- Department of Regenerative and Transplant Medicine, Division of Orthopaedic Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Simoncic P, Romeijn E, Hovestreydt E, Steinfeld G, Santiso-Quiñones G, Merkelbach J. Electron crystallography and dedicated electron-diffraction instrumentation. Acta Crystallogr E Crystallogr Commun 2023; 79:410-422. [PMID: 37151820 PMCID: PMC10162091 DOI: 10.1107/s2056989023003109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 04/04/2023] [Indexed: 05/09/2023]
Abstract
Electron diffraction (known also as ED, 3D ED or microED) is gaining momentum in science and industry. The application of electron diffraction in performing nano-crystallography on crystals smaller than 1 µm is a disruptive technology that is opening up fascinating new perspectives for a wide variety of compounds required in the fields of chemical, pharmaceutical and advanced materials research. Electron diffraction enables the characterization of solid compounds complementary to neutron, powder X-ray and single-crystal X-ray diffraction, as it has the unique capability to measure nanometre-sized crystals. The recent introduction of dedicated instrumentation to perform ED experiments is a key aspect of the continued growth and success of this technology. In addition to the ultra-high-speed hybrid-pixel detectors enabling ED data collection in continuous rotation mode, a high-precision goniometer and horizontal layout have been determined as essential features of an electron diffractometer, both of which are embodied in the Eldico ED-1. Four examples of data collected on an Eldico ED-1 are showcased to demonstrate the potential and advantages of a dedicated electron diffractometer, covering selected applications and challenges of electron diffraction: (i) multiple reciprocal lattices, (ii) absolute structure of a chiral compound, and (iii) R-values achieved by kinematic refinement comparable to X-ray data.
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Affiliation(s)
- Petra Simoncic
- Eldico Scientific AG, PARK INNOVAARE: delivery LAB, Villigen, Aargau5234, Switzerland
- Correspondence e-mail:
| | - Eva Romeijn
- Eldico Scientific AG, PARK INNOVAARE: delivery LAB, Villigen, Aargau5234, Switzerland
| | - Eric Hovestreydt
- Eldico Scientific AG, PARK INNOVAARE: delivery LAB, Villigen, Aargau5234, Switzerland
| | - Gunther Steinfeld
- Eldico Scientific AG, PARK INNOVAARE: delivery LAB, Villigen, Aargau5234, Switzerland
| | | | - Johannes Merkelbach
- Eldico Scientific AG, PARK INNOVAARE: delivery LAB, Villigen, Aargau5234, Switzerland
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50
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Krakovich A, Zaretsky U, Gelbart E, Moalem I, Naimushin A, Rozen E, Scheinowitz M, Goldkorn R. Anthropomorphic cardiac phantom for dynamic SPECT. J Nucl Cardiol 2023; 30:516-527. [PMID: 35760983 DOI: 10.1007/s12350-022-03024-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/23/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND As myocardial blood flow measurement (MBF) in SPECT systems became recently available, significant effort has been devoted to its validation. For that purpose, we have developed a cardiac phantom that is able to mimic physiological radiotracer variation in the left ventricle cavity and in the myocardium, while performing beating-like motion. The new phantom is integrated inside a standard anthropomorphic torso allowing a realistic tissue attenuation and gamma-ray scattering METHODS AND RESULTS: A mechanical cardiac phantom was integrated in a commercially available anthropomorphic torso. Using a GE Discovery 530c SPECT, measurements were performed. It was found that gamma-ray attenuation effects are significant and limit the MBF measurements to global/three-vessel resolution. Dynamic SPECT experiments were performed to validate MBF accuracy and showed mean relative error of 14%. Finally, the effect of varying radiotracer dose on the accuracy of dynamic SPECT was studied CONCLUSIONS: A dynamic cardiac phantom has been developed and successfully integrated in a standard SPECT torso. A good agreement was found between SPECT-reported MBF values and the expected results. Despite increased noise-to-signal ratio when radiotracer doses were reduced, MBF uncertainty did not increase significantly down to very low doses, thanks to the temporal integration of the activity during the measurement.
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Affiliation(s)
- A Krakovich
- Department of Biomedical Engineering, Tel-Aviv University, Tel-Aviv, Israel.
| | - U Zaretsky
- Department of Biomedical Engineering, Tel-Aviv University, Tel-Aviv, Israel
| | - E Gelbart
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - I Moalem
- Nuclear Cardiology Unit, Sheba Medical Center, Lev Leviev Heart Institute, Ramat Gan, Israel
| | - A Naimushin
- Nuclear Cardiology Unit, Sheba Medical Center, Lev Leviev Heart Institute, Ramat Gan, Israel
| | - E Rozen
- Nuclear Cardiology Unit, Sheba Medical Center, Lev Leviev Heart Institute, Ramat Gan, Israel
| | - M Scheinowitz
- Department of Biomedical Engineering, Tel-Aviv University, Tel-Aviv, Israel
| | - R Goldkorn
- Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
- Nuclear Cardiology Unit, Sheba Medical Center, Lev Leviev Heart Institute, Ramat Gan, Israel
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