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Mason E, Nsonwu O, Elmes J, Chudasama D, Pearson C, Hasan L, Hope R, Gerver SM. Increased rates of hospital-onset Staphylococcus aureus bacteraemia in National Health Service acute trusts in England between June 2020 and March 2021: a national surveillance review. J Hosp Infect 2024; 143:33-37. [PMID: 38529780 DOI: 10.1016/j.jhin.2023.10.012] [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: 06/02/2023] [Revised: 10/17/2023] [Accepted: 10/24/2023] [Indexed: 03/27/2024]
Abstract
A large increase in hospital-onset and intensive-care-unit-onset Staphylococcus aureus bacteraemia rates in English acute trusts was observed between 2020 and 2021, coinciding with reported increases in coronavirus disease (COVID-19) cases and associated hospitalizations. Many of these S. aureus bacteraemia cases were defined as co-/secondary infections to COVID-19. Over the same period, increases in the percentage of ventilator-associated pneumonia-related bacteraemia were also found. The COVID-19 pandemic appears to have contributed to the increase in hospital-onset S. aureus bacteraemia in England; further studies are needed to better understand the impacts on patient outcomes.
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Affiliation(s)
- E Mason
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK.
| | - O Nsonwu
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK
| | - J Elmes
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK
| | - D Chudasama
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK
| | - C Pearson
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK
| | - L Hasan
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK
| | - R Hope
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK
| | - S M Gerver
- Healthcare Associated Infection, Fungal, Antimicrobial Resistance, Antimicrobial Usage & Sepsis Division, Clinical & Public Health Group, UK Health Security Agency, London, UK
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2
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Pinder A, Fang L, Fieldhouse A, Goddard A, Lovett R, Khan-Perez J, Maclennan K, Mason E, MacCarrick T, Shelton C. Implementing nitrous oxide cracking technology in the labour ward to reduce occupational exposure and environmental emissions: a quality improvement study . Anaesthesia 2022; 77:1228-1236. [PMID: 36108342 DOI: 10.1111/anae.15838] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2022] [Indexed: 12/27/2022]
Abstract
Nitrous oxide, a potent greenhouse gas, is a common labour analgesic. One method which may reduce its carbon footprint is to 'crack' the exhaled gas into nitrogen and oxygen using catalytic destruction. In this quality improvement project, based on environmental monitoring and staff feedback, we assessed the impact of nitrous oxide cracking technology in the maternity setting. Mean ambient nitrous oxide levels were recorded during the final 30 minutes of uncomplicated labour in 36 cases and plotted on a run chart. Interventions were implemented in four stages, comprising: stage 1, baseline (12 cases); stage 2, cracking with nitrous oxide delivered and scavenged via a mouthpiece (eight cases); stage 3, cracking with nitrous oxide via a facemask with an air-filled cushion (eight cases); stage 4, cracking with nitrous oxide via a low-profile facemask, and enhanced coaching on the use of the technology (eight cases). The median ambient nitrous oxide levels were 71% lower than baseline in stage 2 and 81% lower in stage 4. Staff feedback was generally positive, though some found the technology to be cumbersome; successful implementation relies on effective staff engagement. Our results indicate that cracking technology can reduce ambient nitrous oxide levels in the obstetric setting, with potential for reductions in environmental impacts and occupational exposure.
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Affiliation(s)
- A Pinder
- North West School of Anaesthesia, Health Education England North West, Manchester, UK.,North West School of Anaesthesia, Health Education England North West, Manchester, UK
| | - L Fang
- North West School of Anaesthesia, Health Education England North West, Manchester, UK.,North West School of Anaesthesia, Health Education England North West, Manchester, UK
| | - A Fieldhouse
- Manchester Birth Centre, St Mary's at Wythenshawe Hospital, Manchester, UK
| | - A Goddard
- Department of Anaesthesia, St John's Hospital, Livingston, UK
| | - R Lovett
- Department of Anaesthesia, St John's Hospital, Livingston, UK
| | - J Khan-Perez
- North West School of Anaesthesia, Health Education England North West, Manchester, UK
| | - K Maclennan
- Department of Anaesthesia, Manchester Royal Infirmary, Manchester, UK
| | - E Mason
- Manchester Birth Centre, St Mary's at Wythenshawe Hospital, Manchester, UK
| | - T MacCarrick
- North West School of Anaesthesia, Health Education England North West, Manchester, UK
| | - C Shelton
- Department of Anaesthesia, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK.,Lancaster Medical School, Lancaster University, Lancaster, UK
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3
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Sloot R, Nsonwu O, Chudasama D, Rooney G, Pearson C, Choi H, Mason E, Springer A, Gerver S, Brown C, Hope R. Rising rates of hospital-onset Klebsiella spp. and Pseudomonas aeruginosa bacteraemia in NHS acute trusts in England: a review of national surveillance data, August 2020-February 2021. J Hosp Infect 2021; 119:175-181. [PMID: 34547320 DOI: 10.1016/j.jhin.2021.08.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 05/24/2021] [Revised: 08/23/2021] [Accepted: 08/24/2021] [Indexed: 11/15/2022]
Abstract
Increases in hospital-onset Klebsiella spp. and Pseudomonas aeruginosa bacteraemia rates in England were observed between August 2020 and February 2021 to the highest levels recorded since the start of mandatory surveillance in April 2017. Cases were extracted from England's mandatory surveillance database for key Gram-negative bloodstream infections. Incidence rates for hospital-onset bacteraemia cases increased from 8.9 (N=255) to 14.9 (N=394) per 100,000 bed-days for Klebsiella spp. [incidence rate ratio (IRR) 1.7, P<0.001], and from 4.9 (N=139) to 6.2 (N=164) per 100,000 bed-days for P. aeruginosa (IRR 1.3, P<0.001) (August 2020-February 2021). These incidence rates were higher than the average rates observed during the same period in the previous 3 years. These trends coincided with an increase in the percentage of hospital-onset bacteraemia cases that were also positive for severe acute respiratory syndrome coronavirus-2.
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Affiliation(s)
- R Sloot
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK.
| | - O Nsonwu
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - D Chudasama
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - G Rooney
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - C Pearson
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - H Choi
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - E Mason
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - A Springer
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - S Gerver
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - C Brown
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
| | - R Hope
- Department of Healthcare-Associated Infections and Antimicrobial Resistance, National Infection Service, Public Health England, Colindale, London, UK
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Ismail M, Hill V, Statsevych V, Mason E, Correa R, Prasanna P, Singh G, Bera K, Thawani R, Ahluwalia M, Madabhushi A, Tiwari P. Can Tumor Location on Pre-treatment MRI Predict Likelihood of Pseudo-Progression vs. Tumor Recurrence in Glioblastoma?-A Feasibility Study. Front Comput Neurosci 2021; 14:563439. [PMID: 33381018 PMCID: PMC7767991 DOI: 10.3389/fncom.2020.563439] [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] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 11/19/2020] [Indexed: 11/14/2022] Open
Abstract
A significant challenge in Glioblastoma (GBM) management is identifying pseudo-progression (PsP), a benign radiation-induced effect, from tumor recurrence, on routine imaging following conventional treatment. Previous studies have linked tumor lobar presence and laterality to GBM outcomes, suggesting that disease etiology and progression in GBM may be impacted by tumor location. Hence, in this feasibility study, we seek to investigate the following question: Can tumor location on treatment-naïve MRI provide early cues regarding likelihood of a patient developing pseudo-progression vs. tumor recurrence? In this study, 74 pre-treatment Glioblastoma MRI scans with PsP (33) and tumor recurrence (41) were analyzed. First, enhancing lesion on Gd-T1w MRI and peri-lesional hyperintensities on T2w/FLAIR were segmented by experts and then registered to a brain atlas. Using patients from the two phenotypes, we construct two atlases by quantifying frequency of occurrence of enhancing lesion and peri-lesion hyperintensities, by averaging voxel intensities across the population. Analysis of differential involvement was then performed to compute voxel-wise significant differences (p-value < 0.05) across the atlases. Statistically significant clusters were finally mapped to a structural atlas to provide anatomic localization of their location. Our results demonstrate that patients with tumor recurrence showed prominence of their initial tumor in the parietal lobe, while patients with PsP showed a multi-focal distribution of the initial tumor in the frontal and temporal lobes, insula, and putamen. These preliminary results suggest that lateralization of pre-treatment lesions toward certain anatomical areas of the brain may allow to provide early cues regarding assessing likelihood of occurrence of pseudo-progression from tumor recurrence on MRI scans.
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Affiliation(s)
- Marwa Ismail
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
| | - Virginia Hill
- Department of Neuroradiology, Imaging Institute, Cleveland Clinic, Cleveland, OH, United States.,Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States
| | - Volodymyr Statsevych
- Department of Neuroradiology, Imaging Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Evan Mason
- Department of Neuroradiology, Imaging Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Ramon Correa
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
| | - Prateek Prasanna
- Department of Biomedical Informatics, Stony Brook University, Stony Brook, NY, United States
| | - Gagandeep Singh
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
| | - Kaustav Bera
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States.,Maimonides Medical Center, New York, NY, United States
| | - Rajat Thawani
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
| | - Manmeet Ahluwalia
- Brain Tumor and Neuro-Oncology Center, Cleveland Clinic, Cleveland, OH, United States
| | - Anant Madabhushi
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States.,Louis Stokes Cleveland Veterans Administration Medical Center, Cleveland, OH, United States
| | - Pallavi Tiwari
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
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Liu EJ, Aiuppa A, Alan A, Arellano S, Bitetto M, Bobrowski N, Carn S, Clarke R, Corrales E, de Moor JM, Diaz JA, Edmonds M, Fischer TP, Freer J, Fricke GM, Galle B, Gerdes G, Giudice G, Gutmann A, Hayer C, Itikarai I, Jones J, Mason E, McCormick Kilbride BT, Mulina K, Nowicki S, Rahilly K, Richardson T, Rüdiger J, Schipper CI, Watson IM, Wood K. Aerial strategies advance volcanic gas measurements at inaccessible, strongly degassing volcanoes. Sci Adv 2020; 6:6/44/eabb9103. [PMID: 33127674 PMCID: PMC7608812 DOI: 10.1126/sciadv.abb9103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Volcanic emissions are a critical pathway in Earth's carbon cycle. Here, we show that aerial measurements of volcanic gases using unoccupied aerial systems (UAS) transform our ability to measure and monitor plumes remotely and to constrain global volatile fluxes from volcanoes. Combining multi-scale measurements from ground-based remote sensing, long-range aerial sampling, and satellites, we present comprehensive gas fluxes-3760 ± [600, 310] tons day-1 CO2 and 5150 ± [730, 340] tons day-1 SO2-for a strong yet previously uncharacterized volcanic emitter: Manam, Papua New Guinea. The CO2/ST ratio of 1.07 ± 0.06 suggests a modest slab sediment contribution to the sub-arc mantle. We find that aerial strategies reduce uncertainties associated with ground-based remote sensing of SO2 flux and enable near-real-time measurements of plume chemistry and carbon isotope composition. Our data emphasize the need to account for time averaging of temporal variability in volcanic gas emissions in global flux estimates.
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Affiliation(s)
- E J Liu
- University College London, London WC1E6BS, UK.
- University of Cambridge, Cambridge CB23EQ, UK
| | - A Aiuppa
- Università di Palermo, 90123 Palermo, Italy
| | - A Alan
- GasLAB, Universidad de Costa Rica, San José, Costa Rica
| | - S Arellano
- Chalmers University of Technology, Göteborg, Sweden
| | - M Bitetto
- Università di Palermo, 90123 Palermo, Italy
| | - N Bobrowski
- Heidelberg University, Heidelberg, Germany
- Max Planck Institute for Chemistry, Mainz, Germany
| | - S Carn
- Michigan Technological University, Houghton, MI 49931, USA
| | - R Clarke
- University of Bristol, Bristol, BS8 1TR, UK
| | - E Corrales
- GasLAB, Universidad de Costa Rica, San José, Costa Rica
| | - J M de Moor
- Universidad Nacional, Heredia, 40101-3000 Costa Rica
| | - J A Diaz
- GasLAB, Universidad de Costa Rica, San José, Costa Rica
| | - M Edmonds
- University of Cambridge, Cambridge CB23EQ, UK
| | - T P Fischer
- University of New Mexico, Albuquerque, NM 87131, USA
| | - J Freer
- University of Bristol, Bristol, BS8 1TR, UK
- University of Saskatchewan, Centre for Hydrology, Canmore, Alberta T1W 3G1, Canada
| | - G M Fricke
- University of New Mexico, Albuquerque, NM 87131, USA
| | - B Galle
- Chalmers University of Technology, Göteborg, Sweden
| | - G Gerdes
- Chalmers University of Technology, Göteborg, Sweden
| | - G Giudice
- INGV, Osservatorio Etneo, Sezione di Catania, 95125 Catania, Italy
| | - A Gutmann
- Johannes Gutenberg-Universität, Mainz 55128, Germany
| | - C Hayer
- University of Manchester, Manchester, M13 9PL, UK
| | - I Itikarai
- Rabaul Volcanological Observatory, Rabaul, Papua New Guinea
| | - J Jones
- University of New Mexico, Albuquerque, NM 87131, USA
| | - E Mason
- University of Cambridge, Cambridge CB23EQ, UK
| | | | - K Mulina
- Rabaul Volcanological Observatory, Rabaul, Papua New Guinea
| | - S Nowicki
- University of New Mexico, Albuquerque, NM 87131, USA
| | - K Rahilly
- University of New Mexico, Albuquerque, NM 87131, USA
| | | | - J Rüdiger
- Johannes Gutenberg-Universität, Mainz 55128, Germany
| | - C I Schipper
- Victoria University of Wellington, Wellington 6012, New Zealand
| | - I M Watson
- University of Bristol, Bristol, BS8 1TR, UK
| | - K Wood
- University of Bristol, Bristol, BS8 1TR, UK
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6
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Giles ML, Mason E, Muñoz FM, Moran AC, Lambach P, Merten S, Diaz T, Baye M, Mathai M, Pathirana J, Rendell S, Tunçalp Ö, Hombach J, Roos N. Antenatal care service delivery and factors affecting effective tetanus vaccine coverage in low- and middle-income countries: Results of the Maternal Immunisation and Antenatal Care Situational analysis (MIACSA) project. Vaccine 2020; 38:5278-5285. [PMID: 32527598 PMCID: PMC7342001 DOI: 10.1016/j.vaccine.2020.05.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 03/08/2020] [Revised: 05/04/2020] [Accepted: 05/07/2020] [Indexed: 01/31/2023]
Abstract
Objectives To map the integration of existing maternal tetanus immunization programmes within antenatal care (ANC) services for pregnant women in low- and middle-income countries (LMICs) and to identify and understand the challenges, barriers and facilitators associated with high performance maternal vaccine service delivery. Design A mixed methods, cross sectional study with four data collection phases including a desk review, online survey, telephone and face-to-face interviews and in country visits was undertaken between 2016 and 2018. Associations of different service delivery process components with protection at birth (PAB) and with country groups were established. PAB was defined as the proportion of neonates protected at birth against neonatal tetanus. Regression analysis and structural equation modelling was used to assess associations of different variables with maternal tetanus immunization coverage. Latent class analysis (LCA), was used to group country performance for maternal immunization, and to address the problem of multicollinearity. Setting LMICs. Results The majority of LMICs had a policy on recommended number of ANC visits, however most were yet to implement the WHO guidelines recommending eight ANC contacts. Countries that recommended > 4 ANC contacts were more likely to have high PAB > 90%. Passive disease surveillance was the most common form of disease surveillance performed but the maternal and neonatal morbidity and mortality indicators recorded differed between countries. The presence of user fees for antenatal care and maternal immunization was significantly associated with lower PAB (<90%). Conclusions Recommendations include implementing the current WHO ANC guideline to facilitate increased opportunities for vaccination during each pregnancy. Improved utilisation of ANC services by increasing the demand side by increasing the quality of services, reducing any associated costs and supporting user fee exemptions, or the supply side can also enhance utilisation of ANC services which are positioned as an ideal platform for delivery of maternal vaccines.
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Affiliation(s)
- M L Giles
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia.
| | - E Mason
- London School of Hygiene and Tropical Medicine, London, UK
| | - F M Muñoz
- Section Infectious Diseases, Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, USA
| | - A C Moran
- Epidemiology, Monitoring and Evaluation (EME), Department of Maternal, Newborn, Child and Adolescent Health and Ageing, World Health Organization, Geneva, Switzerland
| | - P Lambach
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - S Merten
- Swiss Tropical and Public Health Institute and University of Basel, Basel, Switzerland
| | - T Diaz
- Epidemiology, Monitoring and Evaluation (EME), Department of Maternal, Newborn, Child and Adolescent Health and Ageing, World Health Organization, Geneva, Switzerland
| | - M Baye
- Coordinator of the National Program to Combat Maternal, Newborn and Child Mortality, Ministry of Public Health, Cameroon
| | - M Mathai
- Department of International Public Health, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - J Pathirana
- Medical Research Council: Respiratory and Meningeal Pathogens Research Unit and Department of Science and Technology/National Research Foundation: Vaccine Preventable Diseases, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - S Rendell
- Department of Anthropology, University of Pennsylvania, Philadelphia, USA
| | - Ö Tunçalp
- Department of Sexual and Reproductive Health and Research Including UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, WHO, Geneva, Switzerland
| | - J Hombach
- Department of Immunization, Vaccines and Biologicals (IVB), World Health Organization, Geneva, Switzerland
| | - N Roos
- Karolinska Institutet, Department of Medicine, Clinical Epidemiology Division, Stockholm, Sweden
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Sánchez-Román A, Gómez-Navarro L, Fablet R, Oro D, Mason E, Arcos JM, Ruiz S, Pascual A. Rafting behaviour of seabirds as a proxy to describe surface ocean currents in the Balearic Sea. Sci Rep 2019; 9:17775. [PMID: 30635588 PMCID: PMC7052213 DOI: 10.1038/s41598-018-36819-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 11/28/2018] [Indexed: 11/23/2022] Open
Abstract
Spatio-temporal variability of surface geostrophic mesoscale currents in the Balearic Sea (western Mediterranean) is characterized from satellite altimetry in combination with in-situ velocity measurements collected, among others, by drifting buoys, gliders and high-frequency radar. Here, we explore the use of tracking data from living organisms in the Balearic Sea as an alternative way to acquire in-situ velocity measurements. Specifically, we use GPS-tracks of resting Scopoli’s shearwaters Calonectris diomedea, that act as passive drifters, and compare them with satellite-derived velocity patterns. Results suggest that animal-borne GPS data can be used to identify rafting behaviour outside of the breeding colonies and, furthermore, as a proxy to describe local sea surface currents. Four rafting patterns were identified according to the prevailing driving forces responsible for the observed trajectories. We find that 76% of the bird trajectories are associated with the combined effects of slippage and Ekman drift and/or surface drag; 59% are directly driven by the sea surface currents. Shearwaters are therefore likely to be passively transported by these driving forces while resting. The tracks are generally consistent with the mesoscale features observed in satellite data and identified with eddy-tracking software.
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Affiliation(s)
- A Sánchez-Román
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), C/ Miquel Marquès, 21, Esporles, 07190, Illes Balears, Spain.
| | - L Gómez-Navarro
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), C/ Miquel Marquès, 21, Esporles, 07190, Illes Balears, Spain.,University Grenoble Alpes, CNRS, IRD, IGE, Grenoble, 38400, France
| | - R Fablet
- labSTICC, TOMS, Brest, 29238, France
| | - D Oro
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), C/ Miquel Marquès, 21, Esporles, 07190, Illes Balears, Spain
| | - E Mason
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), C/ Miquel Marquès, 21, Esporles, 07190, Illes Balears, Spain.,Applied Physics Laboratory, University of Washington, Seattle, Washington, USA
| | - J M Arcos
- SEO/BirdLife, Marine Programme, Barcelona, Spain
| | - S Ruiz
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), C/ Miquel Marquès, 21, Esporles, 07190, Illes Balears, Spain
| | - A Pascual
- Instituto Mediterráneo de Estudios Avanzados, IMEDEA (CSIC-UIB), C/ Miquel Marquès, 21, Esporles, 07190, Illes Balears, Spain
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Hadley-Barrows T, Larkin T, Stevenson K, Huckfield L, Humphreys K, Rimmer Y, Doyle C, Shufflebotham J, Sellors G, Duffy H, Mason E. Benefiting the research and clinical worlds to optimise patient care: the impact of physiotherapy research facilitators. Physiotherapy 2017. [DOI: 10.1016/j.physio.2017.11.203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Santana-Falcón Y, Álvarez-Salgado XA, Pérez-Hernández MD, Hernández-Guerra A, Mason E, Arístegui J. Organic carbon budget for the eastern boundary of the North Atlantic subtropical gyre: major role of DOC in mesopelagic respiration. Sci Rep 2017; 7:10129. [PMID: 28860490 PMCID: PMC5578995 DOI: 10.1038/s41598-017-10974-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 08/14/2017] [Indexed: 11/09/2022] Open
Abstract
Transports of suspended particulate (POCsusp) and dissolved (DOC) organic carbon are inferred from a box-model covering the eastern boundary of the North Atlantic subtropical gyre. Corresponding net respiration rates (R) are obtained from a net organic carbon budget that is based on the transport estimates, and includes both vertical and lateral fluxes. The overall R in the mesopelagic layer (100-1500 m) is 1.6 ± 0.4 mmol C m-2 d-1. DOC accounts for up to 53% of R as a result of drawdown of organic carbon within Eastern North Atlantic Central Water (ENACW) that is entrained into sinking Mediterranean Overflow Water (MOW) that leads to formation of Mediterranean water (MW) at intermediate depths (~900 m). DOC represents 90% of the respired non-sinking organic carbon. When converted into oxygen units, the computed net respiration rate represents less than half the oxygen utilization rates (OUR) reported for the mesopelagic waters of the subtropical North Atlantic. Mesoscale processes in the area, not quantified with our approach, could account in part for the OUR differences observed between our carbon budget and other published studies from the North Atlantic, although seasonal or interannual variability could also be responsible for the difference in the estimates.
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Affiliation(s)
- Yeray Santana-Falcón
- Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, 35017, Las Palmas de Gran Canaria, Spain.
| | | | - María Dolores Pérez-Hernández
- Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, 35017, Las Palmas de Gran Canaria, Spain
- Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA
| | - Alonso Hernández-Guerra
- Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, 35017, Las Palmas de Gran Canaria, Spain
| | - Evan Mason
- Instituto Mediterráneo de Estudios Avanzados, CSIC-UIB. C. Miquel Marquès, 21, 07190, Esporles, Illes Balears, Spain
| | - Javier Arístegui
- Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, ULPGC, 35017, Las Palmas de Gran Canaria, Spain
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Eliasson A, Parmar R, Muir S, Mason E, Boardman W, Goodwin J. 0595 OUTCOMES OF ORAL APPLIANCE THERAPY FROM FIVE DENTAL SLEEP MEDICINE PRACTICES. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Cozens A, McMahon S, Purves J, Miedzybrodska Z, Mason E. Detection, assessment and treatment of children with familial hypercholesterolaemia in Scotland. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.09.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mason E, Foster R, Wray L, McNulty A, Donovan B. Reactive arthritis following a Microsporidia infection. Int J STD AIDS 2016; 27:1239-1241. [DOI: 10.1177/0956462416640364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 02/05/2016] [Indexed: 11/17/2022]
Abstract
Reactive arthritis may be caused by both sexually transmissible and enteric organisms, though Microsporidia is not currently recognised as a causative agent. This case report describes the development of reactive arthritis following Microsporidia infection in an immunocompetent man.
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Affiliation(s)
- E Mason
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, Australia
- Faculty of Medicine, UNSW Australia, Sydney, NSW, Australia
| | - R Foster
- The Kirby Institute, UNSW Australia, Sydney, NSW, Australia
| | - L Wray
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, Australia
- School of Women’s and Children’s Health, UNSW Australia, Australia
| | - A McNulty
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, Australia
| | - B Donovan
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, Australia
- The Kirby Institute, UNSW Australia, Sydney, NSW, Australia
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Mason E, Wray L, Foster R, Jamil MS, Guy R, McNulty A, Donovan B. Reactive arthritis at the Sydney Sexual Health Centre 1992-2012: declining despite increasing chlamydia diagnoses. Int J STD AIDS 2015; 27:882-9. [PMID: 26378192 DOI: 10.1177/0956462415598251] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 04/16/2015] [Accepted: 07/01/2015] [Indexed: 01/21/2023]
Abstract
Reactive arthritis is an under-studied complication of genital Chlamydia trachomatis infection (chlamydia). We assessed trends and risk factors for reactive arthritis in a large urban sexual health clinic. Using a case-control design, data on reactive arthritis cases and controls at the Sydney Sexual Health Centre over the period 1992-2012 were extracted and multivariate analyses were performed. Trend analyses were performed on reactive arthritis diagnoses. Over the 1992-2012 study period, 85 reactive arthritis cases were diagnosed at Sydney Sexual Health Centre. The rate of reactive arthritis diagnoses decreased over time (23 in 1992-1996 to one in 2007-2011 and none in 2012), while chlamydia diagnoses increased (770 in 1992-1996 to 2257 in 2007-2011). In multivariate analysis, factors independently associated with a reactive arthritis diagnosis were: being male (adjusted odds ratio [aOR] 3.27; 95% confidence interval [CI] 1.04-10.32; p = 0.043) or born overseas (aOR 2.69; 95% CI 1.27-5.70; p = 0.010), while a past sexually transmitted infection other than chlamydia or non-gonococcal urethritis was protective (aOR 0.21; 95% CI 0.10-0.45; p < 0.001). Reactive arthritis was not associated with current or recent chlamydia infection (p = 0.184) but was marginally associated with past non-gonococcal urethritis (p = 0.080). This study found a decline in reactive arthritis diagnoses despite an increase in chlamydia diagnoses.
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Affiliation(s)
- E Mason
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, NSW, Australia Faculty of Medicine, UNSW Australia, Sydney, NSW, Australia
| | - L Wray
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, NSW, Australia School of Women's and Children's Health, UNSW Australia, Sydney, NSW, Australia
| | - R Foster
- The Kirby Institute, UNSW Australia, Sydney, NSW, Australia
| | - M S Jamil
- The Kirby Institute, UNSW Australia, Sydney, NSW, Australia
| | - R Guy
- The Kirby Institute, UNSW Australia, Sydney, NSW, Australia
| | - A McNulty
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, NSW, Australia School of Public Health and Community Medicine, UNSW Australia, Sydney, NSW, Australia
| | - B Donovan
- Sydney Sexual Health Centre, Sydney Hospital, Sydney, NSW, Australia The Kirby Institute, UNSW Australia, Sydney, NSW, Australia
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Glue P, Courts J, MacDonald M, Gale C, Mason E. Implementation of the 2013 Psychoactive Substances Act and mental health harms from synthetic cannabinoids. N Z Med J 2015; 128:15-18. [PMID: 26117386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIMS Use of synthetic cannabinoids is associated with a range of mental health harms. The 2013 Psychoactive Substances Act (PSA) was intended to limit retail availability of synthetic cannabinoids which had acceptable safety profiles. We evaluated numbers and clinical characteristics of patients presenting with mental health harms associated with use of synthetic cannabinoids for three months before and after implementation of the PSA on 18July 2013. METHODS Retrospective audit of case notes of patients presenting to an emergency psychiatric service (EPS) in Dunedin. RESULTS In the three months post-PSA, there was a 42% reduction in EPS contacts and 52% reduction in patient presentations, compared with the three months pre-PSA. Patient demographics (predominantly young males with prior contact with mental health services), presenting symptoms (mood and psychotic symptoms and suicidality), and management and disposition were identical in both periods. CONCLUSIONS The decrease in mental health harms, as measured by frequency of EPS contacts, appeared to be due to reduced retail availability of synthetic cannabinoids rather that reduced toxicity of available products.
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Affiliation(s)
- Paul Glue
- Hazel Buckland Chair of Psychological Medicine, School of Medical Sciences, University of Otago, PO Box 913, Dunedin, New Zealand.
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Mason E, Tofield A. New analysis of the SYMPLICITY HTN-3 trial. Eur Heart J 2015; 36:535. [PMID: 25884066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
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Ma L, Mason E, Sahgal A, Larson D, Polishchuk A, McDermott M, Sneed P. Clinical Realization of Sector Beam Intensity Modulation for Gamma-Ray Based Radiosurgery. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Regan A, Lynch S, Mason E, Davies R, Evans C, Whitehouse J, Rashid R, Nash E. 260 A prospective cohort study examining the prevalence of emotional and behavioural difficulties in children of patients with cystic fibrosis (CF). J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60395-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Alonso-González IJ, Arístegui J, Lee C, Sanchez-Vidal A, Calafat A, Fabrés J, Sangrá P, Mason E. Carbon dynamics within cyclonic eddies: insights from a biomarker study. PLoS One 2014; 8:e82447. [PMID: 24386098 PMCID: PMC3875410 DOI: 10.1371/journal.pone.0082447] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 11/01/2013] [Indexed: 11/19/2022] Open
Abstract
It is generally assumed that episodic nutrient pulses by cyclonic eddies into surface waters support a significant fraction of the primary production in subtropical low-nutrient environments in the northern hemisphere. However, contradictory results related to the influence of eddies on particulate organic carbon (POC) export have been reported. As a step toward understanding the complex mechanisms that control export of material within eddies, we present here results from a sediment trap mooring deployed within the path of cyclonic eddies generated near the Canary Islands over a 1.5-year period. We find that, during summer and autumn (when surface stratification is stronger, eddies are more intense, and a relative enrichment in CaCO3 forming organisms occurs), POC export to the deep ocean was 2-4 times higher than observed for the rest of the year. On the contrary, during winter and spring (when mixing is strongest and the seasonal phytoplankton bloom occurs), no significant enhancement of POC export associated with eddies was observed. Our biomarker results suggest that a large fraction of the material exported from surface waters during the late-winter bloom is either recycled in the mesopelagic zone or bypassed by migrant zooplankton to the deep scattering layer, where it would disaggregate to smaller particles or be excreted as dissolved organic carbon. Cyclonic eddies, however, would enhance carbon export below 1000 m depth during the summer stratification period, when eddies are more intense and frequent, highlighting the important role of eddies and their different biological communities on the regional carbon cycle.
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Affiliation(s)
- Iván J. Alonso-González
- Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
- Spanish Bank of Algae (BEA), Telde, Spain
- * E-mail:
| | - Javier Arístegui
- Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Cindy Lee
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, New York, United States of America
| | - Anna Sanchez-Vidal
- GRC Geociències Marines, Facultat de Geologia, Universitat de Barcelona, Barcelona, Spain
| | - Antoni Calafat
- GRC Geociències Marines, Facultat de Geologia, Universitat de Barcelona, Barcelona, Spain
| | - Joan Fabrés
- UNEP Shelf Programme Facility, UNEP/GRID-Arendal, Arendal, Norway
| | - Pablo Sangrá
- Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Evan Mason
- Grup d'Oceanografia Fisica, Institut de Ciències del Mar, CMIMA-CSIC, Barcelona, Spain
- Mediterranean Institute for Advanced Studies (IMEDEA), Esporles, Spain
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Dyke J, Hendry K, Hill J, Schultz M, Mason E, Glue P. Management of a Cluster of Foreign Body Ingestion Incidents in Patients with Borderline Personality Disorder. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ojpsych.2014.42014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Mason E. An apparent drop in synthetic cannabinoid presentations. N Z Med J 2013; 126:191. [PMID: 24362747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- Evan Mason
- Department of Psychological Medicine, School of Medical Sciences, University of Otago, Dunedin, New Zealand.
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Prater NJM, Brye KR, Dunn S, Soerens TS, Sharpley AN, Mason E, Gbur EE. Effluent Storage and Biomat Occurrence among Septic System Absorption Field Architectures in a Typic Fragiudult. J Environ Qual 2013; 42:1213-1225. [PMID: 24216373 DOI: 10.2134/jeq2012.0373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
On-site wastewater treatment systems (OWTSs) are commonly used by households in areas of low population density to treat household wastewater and recycle it back to the environment. However, new absorption field products of differing architecture types have recently become available. A 3-yr field study was conducted in Bethel Heights, northwest Arkansas to assess several newer architecture types (i.e., chambers, polystyrene-aggregate, and gravel-less pipe) relative to the traditional pipe-and-gravel design under wet- and dry-soil conditions. Thirteen products of four different architecture types were installed in 46-cm-deep trenches in a Captina silt loam (fine-silty, siliceous, active, mesic Typic Fragiudult). Products were evaluated based on in-trench solution storage measured with an electronic water-level sensor approximately weekly from January 2009 through January 2012. Between May 2010 and January 2012, the thickness of any biomat formation was measured approximately weekly by insertion of a wooden dowel through in-trench monitoring ports. Architecture type alone did not affect ( > 0.05) in-trench solution storage. However, solution storage among individual products differed under wet- and dry-soil conditions ( < 0.05). When present, biomat thickness differed significantly ( < 0.05) among all four architecture types, ranging from 1.4 to 6.2 cm thick on average in the pipe-and-aggregate and polystyrene-aggregate types, respectively. Regression analyses showed that biomat thickness increased in three products, did not change in nine products, and decreased in one product over time. Results showed that several currently approved alternative products had similar in-trench solution storage but that several alternative products also had greater solution storage than that of the traditional pipe-and-gravel system. With no observed effluent surfacing, the soil morphology approach appears to be adequate and appropriately environmentally conservative for assigning typical single-family loading rates to alternative OWTS products and to the traditional pipe-and-gravel system.
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Tobias J, Deere K, Palmer S, Clark E, Clinch J, Fikree A, Aktar R, Wellstead G, Knowles C, Grahame R, Aziz Q, Amaral B, Murphy G, Ioannou Y, Isenberg DA, Tansley SL, Betteridge ZE, Gunawardena H, Shaddick G, Varsani H, Wedderburn L, McHugh N, De Benedetti F, Ruperto N, Espada G, Gerloni V, Flato B, Horneff G, Myones BL, Onel K, Frane J, Kenwright A, Lipman TH, Bharucha KN, Martini A, Lovell DJ, Baildam E, Ruperto N, Brunner H, Zuber Z, Keane C, Harari O, Kenwright A, Cuttica RJ, Keltsev V, Xavier R, Penades IC, Nikishina I, Rubio-Perez N, Alekseeva E, Chasnyk V, Chavez J, Horneff G, Opoka-Winiarska V, Quartier P, Silva CA, Silverman ED, Spindler A, Lovell DJ, Martini A, De Benedetti F, Hendry GJ, Watt GF, Brandon M, Friel L, Turner D, Lorgelly PK, Gardner-Medwin J, Sturrock RD, Woodburn J, Firth J, Waxman R, Law G, Siddle H, Nelson AE, Helliwell P, Otter S, Butters V, Loughrey L, Alcacer-Pitarch B, Tranter J, Davies S, Hryniw R, Lewis S, Baker L, Dures E, Hewlett S, Ambler N, Clarke J, Gooberman-Hill R, Jenkins R, Wilkie R, Bucknall M, Jordan K, McBeth J, Norton S, Walsh D, Kiely P, Williams R, Young A, Harkess JE, McAlarey K, Chesterton L, van der Windt DA, Sim J, Lewis M, Mallen CD, Mason E, Hay E, Clarson LE, Hider SL, Belcher J, Heneghan C, Roddy E, Mallen CD, Gibson J, Whiteford S, Williamson E, Beatty S, Hamilton-Dyer N, Healey EL, Ryan S, McHugh GA, Main CJ, Porcheret M, Nio Ong B, Pushpa-Rajah A, Dziedzic KS, MacRae CS, Shortland A, Lewis J, Morrissey M, Critchley D, Muller S, Mallen CD, Belcher J, Helliwell T, Hider SL, Cole Z, Parsons C, Crozier S, Robinson S, Taylor P, Inskip H, Godfrey K, Dennison E, Harvey NC, Cooper C, Prieto Alhambra D, Lalmohamed A, Abrahamsen B, Arden N, de Boer A, Vestergaard P, de Vries F, Kendal A, Carr A, Prieto-Alhambra D, Judge A, Cooper C, Chapurlat R, Bellamy N, Czerwinski E, Pierre Devogelaer J, March L, Pavelka K, Reginster JY, Kiran A, Judge A, Javaid MK, Arden N, Cooper C, Sundy JS, Baraf HS, Becker M, Treadwell EL, Yood R, Ottery FD. Oral Abstracts 3: Adolescent and Young Adult * O13. Hypermobility is a Risk Factor for Musculoskeletal Pain in Adolescence: Findings From a Prospective Cohort Study. Rheumatology (Oxford) 2013. [DOI: 10.1093/rheumatology/ket200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ko P, Duda B, Hussey E, Mason E, Woodman G, Ally B. The neural correlates of visual working memory decline in normal aging. J Vis 2012. [DOI: 10.1167/12.9.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Mason E, Colas F, Molemaker J, Shchepetkin AF, Troupin C, McWilliams JC, Sangrà P. Seasonal variability of the Canary Current: A numerical study. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010jc006665] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Ivanov VD, Cáceres C, Minniti D, Selman F, Melo C, Naef D, Mason E, Pietrzynski G. High-Cadence Transit Timing Variation Monitoring of Extrasolar Planets. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20101105008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Forsberg CW, Schellhorn HE, Gibbins LN, Maine F, Mason E. The release of fermentable carbohydrate from peat by steam explosion and its use in the microbial production of solvents. Biotechnol Bioeng 2009; 28:176-84. [PMID: 18555312 DOI: 10.1002/bit.260280205] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Steam treatment of peat at 200 degrees C for 3 min, followed by instantaneous decompression (steam explosion), solubilized up to 28% of the dry matter. Seventy-five percent of the solubilized material was carbohydrate, 33% of which was composed of mono- and disaccharides, including galactose, glucose, xylose, mannose, arabinose, and cellobiose, in order of decreasing concentration. The solubilized materials served as the sole source of carbohydrate for growth and solvent production by Clostridium acetobutylicum and C. butylicum which utilized up to 40% of the carbohydrate. Of the saccharides in this mixture, galactose was the least readily utilized. Approximately 30% of the fermentable carbohydrate used was converted to fatty acids and solvents, with the primary fermentation product being butyrate. Clostridium thermohydrosulfuricum was able to utilize ca. 50% of the carbohydrate, and simultaneously produced slightly more than 1 mol ethanol/mol saccharide metabolized. This organism, like other strains tested, used galactose less readily than the other sugars. The residue from the steam explosion process contained 24% cellulose, but it could not serve as a source of carbohydrate for the growth of either Bacteroides succinogenes or Clostridium thermocellum, suggesting that inhibitors were released during the steam treatment.
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Affiliation(s)
- C W Forsberg
- Department of Microbiology, University of Guelph, Guelph, Ontario N1G 2W1
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Abstract
OBJECTIVE To compare a five-visit antenatal care (ANC) model with specified goals with the standard model in a rural area in Zimbabwe. DESIGN Cluster randomised controlled trial with the clinic as the randomisation unit. SETTING Primary care setting in a developing country where care was provided by nurse-midwives. POPULATION Women booking for ANC in the clinics were eligible. MAIN OUTCOME MEASURES Number of antenatal visits, antepartum and intrapartum referrals, utilization of health centre for delivery and perinatal outcomes. METHODS Twenty-three rural health centres were stratified prior to random allocation to the new (n = 11) or standard (n = 12) model of care. RESULTS We recruited 13,517 women (new, n = 6897 and standard, n = 6620) in the study, and 78% (10,572) of their pregnancy records were retrieved. There was no difference in median maternal age, parity and gestational age at booking between women in the standard model and those in the new model. The median number of visits was four for both models. The proportion of women with five or less visits was 77% in the new and 69% in the standard model (OR 1.5; 95% CI 1.08-2.2). The likelihood of haemoglobin testing was higher in the new model (OR 2.4; 95% CI 1.0-5.7) but unchanged for syphilis testing. There were fewer intrapartum transfers (5.4 versus 7.9% [OR 0.66; 95% CI 0.44-0.98]) in the new model but no difference in antepartum or postpartum transfers. There was no difference in rates of preterm delivery or low birthweight. The perinatal mortality was 25/1000 in standard model and 28/1000 in new model. CONCLUSION In Gutu district, a focused five-visit schedule did not change the number of contacts but was more effective as expressed by increased adherence to procedures and better use of institutional health care.
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Affiliation(s)
- F Majoko
- Department of Women's & Children's Health, Section for International Maternal & Child Health, Uppsala University, Uppsala, Sweden.
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Mason E. Bibliography. Refugee Survey Quarterly 2007. [DOI: 10.1093/rsq/hdi0252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Victora CG, Huicho L, Amaral JJ, Armstrong-Schellenberg J, Manzi F, Mason E, Scherpbier R. Are health interventions implemented where they are most needed? District uptake of the integrated management of childhood illness strategy in Brazil, Peru and the United Republic of Tanzania. Bull World Health Organ 2006; 84:792-801. [PMID: 17128359 PMCID: PMC2627500 DOI: 10.2471/blt.06.030502] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2006] [Accepted: 06/11/2006] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE To describe geographical patterns of implementation of the Integrated Management of Childhood Illness (IMCI) strategy in three countries and to assess whether the strategy was implemented in areas with the most pressing child health needs. METHODS We conducted interviews with key informants at the national and district levels in Brazil, Peru and the United Republic of Tanzania, and an ecological study of factors associated with health worker training in IMCI. Explanatory factors included district population, distance from the capital, human development index, other socioeconomic indicators and baseline mortality rates in children younger than five years. FINDINGS In line with recommendations by WHO, early implementation districts were characterized by proximity to the capital and suitable training sites, presence of motivated health managers and a functioning health system. In the expansion phase, IMCI tended to be adopted by other districts with similar characteristics. In Brazil, uptake by poor and small municipalities and those further away from the state capital was significantly lower. In Peru, there was no association with distance from Lima, and a non-significant trend for IMCI adoption by small and poor departments. In the United Republic of Tanzania, the only statistically significant finding was a lower uptake by remote districts. Implementation was not associated with baseline mortality levels in any country studied. CONCLUSION Whereas clear and reasonable guidelines are provided for selection of early use districts, no criteria for promoting IMCI expansion had been issued, and areas of greatest need were not prioritized. Equity analyses based on the geographical deployment of new programmes and strategies can contribute to assessing whether they are reaching those who need them most.
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Affiliation(s)
- C G Victora
- Programa de Pós-Graduação em Epidemiologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil
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McBeth B, Ankel F, Ling L, McNamara R, Flottemesch T, Asplin B, Mason E. 101. Ann Emerg Med 2006. [DOI: 10.1016/j.annemergmed.2006.07.905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bonds DE, Lasser N, Qi L, Brzyski R, Caan B, Heiss G, Limacher MC, Liu JH, Mason E, Oberman A, O'Sullivan MJ, Phillips LS, Prineas RJ, Tinker L. The effect of conjugated equine oestrogen on diabetes incidence: the Women's Health Initiative randomised trial. Diabetologia 2006; 49:459-68. [PMID: 16440209 DOI: 10.1007/s00125-005-0096-0] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2005] [Accepted: 10/25/2005] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS Recent clinical trials have found that the combination of conjugated equine oestrogen (CEO) and medroxyprogesterone has a protective effect on the incidence of type 2 diabetes. To determine the effect of CEO alone on the incidence of diabetes mellitus in postmenopausal women, we analysed the results of the Women's Health Initiative oestrogen-alone trial. METHODS The Women's Health Initiative is a randomised, double-masked trial comparing the effect of daily 0.625 mg CEO with placebo during 7.1 years of follow-up of 10,739 postmenopausal women who were aged 50-79 years and had previously had a hysterectomy. Diabetes incidence was ascertained by self-report of treatment with insulin or oral hypoglycaemic medication. Fasting glucose, insulin and lipoproteins were measured in an 8.6% random sample of study participants, at baseline and at 1, 3 and 6 years. RESULTS The cumulative incidence of treated diabetes was 8.3% in the oestrogen-alone group and 9.3% in the placebo group (hazard ratio 0.88, 95% CI 0.77-1.01, p=0.072). During the first year of follow-up, a significant fall in insulin resistance (homeostasis model assessment of insulin resistance) in actively treated women compared with the control subjects (Year 1 baseline between-group difference -0.53) was seen. However, there was no difference in insulin resistance at the 3- or 6-year follow-up. CONCLUSIONS/INTERPRETATION Postmenopausal therapy with oestrogen alone may reduce the incidence of treated diabetes. The effect is smaller than that seen with oestrogen plus progestin. CEO should not, however, be used with the intention of preventing diabetes, as its well-described adverse effects preclude long-term use for primary prevention.
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Affiliation(s)
- D E Bonds
- Section of Epidemiology, Department of Public Health Sciences, Wake Forest University, School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27104, USA.
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Majoko F, Nystrom L, Munjanja S, Mason E, Lindmark G. Does maternity care improve pregnancy outcomes in women with previous complications? A study from Zimbabwe. Trop Doct 2006; 35:195-8. [PMID: 16354464 DOI: 10.1258/004947505774938710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
To determine the utilization of maternal health care services and pregnancy outcomes for women with a history of complications in previous pregnancy, we analysed the pregnancy records of multiparous women (parity > or =1) who booked and completed follow-up in Gutu district, Zimbabwe between January 1995 and June 1998. Women with previous uncomplicated pregnancies (n = 6140) were classified as low risk, whereas those with complications of previous pregnancy (n = 1077) were classified high risk. At enrolment, there was no difference in maternal age and parity between low- and high-risk women. A higher proportion of high-risk women had more than five antenatal visits (32% versus 21%; P<0.001) and gave birth in hospital (47% versus 18%; P<0.001). The risk of antenatal (relative risk [RR] 1.57; 95% confidence interval [CI] 1.32-1.88), labour/delivery (RR 1.98; 95% CI 1.75-2.25) and neonatal (RR 1.83; 95% CI 1.44-2.34) complications was elevated in high-risk women. There was increased risk for perinatal death in high-risk women, but this did not reach statistical significance (RR 1.56; 95% CI 0.98-2.49). The recurrence ratio for most complications was low and the sensitivity of historical risk markers in predicting women likely to develop further complicated pregnancies was only 23%. Most women with previous pregnancy complications can safely give birth in the rural health centre. We concluded that high-risk women had an elevated risk of complications in the index pregnancy and that better utilization of maternal health care, especially for delivery, reduced adverse perinatal outcomes.
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Affiliation(s)
- F Majoko
- Department of Obstetrics & Gynaecology, University of Zimbabwe School of Medicine, Harare, Zimbabwe.
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Ioffe V, Sandhu A, Karakla D, Wadsworth J, Mendoza A, Rao N, Dignan K, Mason E, Saddeh G, Goffman T. Prospective Single Arm Study of Radioprotection by Amifostine in High Dose Radioiodine Therapy for Thyroid Cancer. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Majoko F, Nystrom L, Munjanja SP, Mason E, Lindmark G. Relation of Parity to Pregnancy Outcome in a Rural Community in Zimbabwe. Afr J Reprod Health 2004. [DOI: 10.2307/3583404] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Majoko FM, Nyström L, Munjanja SP, Mason E, Lindmark G. Relation of parity to pregnancy outcome in a rural community in Zimbabwe. Afr J Reprod Health 2004; 8:198-206. [PMID: 17348336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
This population-based cohort study was conducted to compare pregnancy complications and outcome among nulliparous, low (1-5) and high (> or = 6) parity women. Women who registered for antenatal care and gave birth in Guru District, Zimbabwe, between January 1995 and June 1998 were classified into groups by parity. The women were compared for baseline characteristics, utilisation of health facilities and occurrence of pregnancy complications such as hypertensive disorders of pregnancy, haemorrhage, pre-term delivery, operative delivery, low birth weight and perinatal death. In estimating risk, primiparous (parity = 1) women were used as referents. Pregnancy records for 10,569 women were analysed. Mean ages of nulliparous and high parity (> or = 6) women were 20.1 and 37.7 years respectively (p < 0.001). Prevalence of anaemia at booking (haemoglobin < or =10.5 g/dl) was reduced in nulliparous compared to multiparous women (11.7% vs 16.8%; p > or = 0.001). Nulliparous women were likely to book early (< or = 20 weeks) for antenatal care, have a higher number of visits (> or = 6) and fewer home births. Nulliparous women had higher risk for low birth weight (RR 1.70; 95% CI 1.36 - 2.13). Compared to low parity women, nulliparous and high parity women had an elevated risk of hypertensive complications RR 1.62 (95% CI 1.37-1.92) and RR 1.64 (95% CI 1.29 - 2.07) respectively. The risk of developing any pregnancy complications was highest in nulliparous women (RR 1.48; 95% 1.31- 1.67). In conclusion, nulliparous women had an increased risk of pregnancy complications. High parity women with no previous complicated pregnancy were at low risk of complications.
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Affiliation(s)
- F M Majoko
- Department of Obstetrics and Gynaecology, University of Zimbabwe, Harare, Zimbabwe.
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Gonzalez R, Smith CD, Ritter EM, Mason E, Duncan T, Ramshaw BJ. Laparoscopic palliative surgery for complicated colorectal cancer. Surg Endosc 2004; 19:43-6. [PMID: 15529197 DOI: 10.1007/s00464-003-8207-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2003] [Accepted: 07/08/2004] [Indexed: 12/19/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the feasibility and outcomes of the laparoscopic approach for the palliation of advanced complicated colorectal cancer (CRC). METHODS We reviewed 21 laparoscopic palliative procedures for emergent complications of advanced CRC between 1994 and 2002. Intraoperative complications, estimated blood loss, transfusions, operative times, time to first bowel movement, length of hospital stay, and postoperative complications were assessed. RESULTS Indications for surgery included perforation (n = 10), bleeding (n = 7), and obstruction (n = 4). A proximal diverting procedure was performed in all patients, and a concomitant colon resection was performed in 18 patients (86%). The mean operative time was 181 +/- 22 min. Estimated blood loss was 283 +/- 48 cc, with three patients (14%) requiring transfusions. The average length of hospital stay was 8.6 +/- 2 days, and time to first bowel movement was 61 +/- 9 h. The complication rate and the 30-day mortality rate were 33% and 0%, respectively. CONCLUSION A laparoscopic approach to address advanced CRC is safe and effective and should be considered part of the surgeon's armamentarium for the palliation of advanced complicated CRC.
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Affiliation(s)
- R Gonzalez
- Emory Endosurgery Unit, Emory University School of Medicine, 1364 Clifton Road, NE, Atlanta, GA 30322, USA
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Gonzalez R, Smith CD, Mattar SG, Venkatesh KR, Mason E, Duncan T, Wilson R, Miller J, Ramshaw BJ. Laparoscopic vs open resection for the treatment of diverticular disease. Surg Endosc 2003; 18:276-80. [PMID: 14691707 DOI: 10.1007/s00464-003-8809-2] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2003] [Accepted: 06/17/2003] [Indexed: 11/26/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate whether laparoscopic colon resection (LCR) offers any advantages over open colon resection (OCR) in the treatment of diverticular disease. METHODS Between 1992 and 2002, 95 patients underwent LCR and 80 patients underwent OCR for the treatment of diverticular disease. Demographics, details of operative procedure, outcome, and pathology were compared. RESULTS Patients in both groups were matched for age, sex, body mass index, history of previous abdominal operations, comorbidities, location of the disease, and presence of complications. LCR resulted in significantly less estimated blood loss and postoperative complications, shorter time to first bowel movement, and shorter length of stay than the OCR. There was no difference in operative time, intraoperative complications, mortality rates between groups. CONCLUSIONS LCR is a safe and effective approach for the treatment of patients with diverticular disease. It results in less estimated blood loss, shorter time to first bowel movement, less postoperative complications, and shorter length of hospital stay.
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Affiliation(s)
- R Gonzalez
- Emory Endosurgery Unit, Emory University School of Medicine, 1364 Clifton Rd NE, Atlanta, GA 30322, USA
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Majoko F, Munjanja S, Nystrom L, Mason E, Lindmark G. Field efficiency of syphilis screening in antenatal care: lessons from Gutu District in Zimbabwe. Cent Afr J Med 2003; 49:90-3. [PMID: 15214281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
OBJECTIVES To determine coverage for antenatal syphilis screening in a rural area and evaluate the accuracy of on-site Rapid Plasma Reagin (RPR) tests performed by nurse-midwives. DESIGN Descriptive cross sectional. SETTING Rural Health Centres (n = 23) in the Gutu District of Zimbabwe. SUBJECTS Women booking for antenatal care in the district were used to determine coverage of screening. Results from women who had an RPR test performed during a nine week period were used in assessing the accuracy of tests performed by nurse-midwives. INTERVENTION On-site antenatal screening for syphilis using an RPR kit with immediate results and treatment for women who tested positive. MAIN OUTCOME MEASURES Prevalence of syphilis (positive RPR) at booking and the level of agreement between three observers (RHC nurse-midwife, medical practitioner under field conditions and medical laboratory technologist). RESULTS Eighty five percent of women were screened for syphilis at the first antenatal visit and 11% had a positive RPR. Almost all (97.3%) women with a positive RPR test result were treated. The accuracy of tests performed by RHC staff was poor with a sensitivity of 40% (95% CI 21.8 to 61.1) when compared to those done by the medical practitioner and 8.7% (95% CI 1.5 to 29.5) when compared to those done in a laboratory. The predictive value of a positive test was 22.7% and that of a negative test was 94.9%. CONCLUSION The coverage of screening for syphilis in pregnant women in Gutu District was good but the results were unreliable. There is need for nurse-midwives, who perform the majority of RPR tests in the RHC, to receive adequate training to ensure competence in testing and to strengthen quality control procedures.
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Affiliation(s)
- F Majoko
- Department of Obstetrics and Gynaecology, University of Zimbabwe, Harare, Zimbabwe.
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Ramshaw B, Abiad F, Voeller G, Wilson R, Mason E. Polyester (Parietex) mesh for total extraperitoneal laparoscopic inguinal hernia repair: initial experience in the United States. Surg Endosc 2003; 17:498-501. [PMID: 12436235 DOI: 10.1007/s00464-002-8848-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2002] [Accepted: 08/09/2002] [Indexed: 11/25/2022]
Abstract
Polypropylene mesh is the most commonly used mesh for open and laparoscopic hernia repair in the United States. A variety of newly developed polyester mesh products have recently become available. This is the first U.S. multiinstitutional study evaluating the initial experience of polyester mesh use for total extraperitoneal (TEP) laparoscopic inguinal hernia repair. Between January 2000 and June 2001, 337 patients underwent 495 TEP laparoscopic inguinal hernia repairs using polyester mesh. There were 309 men and 28 women in the study, whose average age was 45 years (range, 17-80 years). The average operative time for all cases was 54.3 min (range, 18-157 min). There were no conversions to open repair and no mortality. Complications included 12 seromas/hematomas (six aspirated), chronic pain in three patients, urinary retention in two patients, and one incidence each of the following: epididimitis, prostatitis, hydrocele, and port-site cellulitis. Additionally, one patient had carbon dioxide (CO2) in the Foley bag at the end of the surgery, but a normal cystogram showed no identified bladder injury. There has been one recurrence (0.2%), occurring 4 months after surgery, which was repaired using a transabdominal laparoscopic approach. The mean follow-up period was 11 months (range, 2-22 months). There have been no documented infections of the mesh, and no mesh has been removed. This study documents a favorable initial experience with polyester mesh for TEP laparoscopic inguinal hernia repair. There were no complications related to the mesh. There may be technical and long-term advantages with the use of polyester mesh for laparoscopic inguinal hernia repair. Longer follow-up evaluation and additional studies are warranted to evaluate these potential advantages.
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Affiliation(s)
- B Ramshaw
- Emory University, 1364 Clifton Road NE, Suite H-124, Atlanta, GA 30322, USA.
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Bandi V, Apicella MA, Mason E, Murphy TF, Siddiqi A, Atmar RL, Greenberg SB. Nontypeable Haemophilus influenzae in the lower respiratory tract of patients with chronic bronchitis. Am J Respir Crit Care Med 2001; 164:2114-9. [PMID: 11739144 DOI: 10.1164/ajrccm.164.11.2104093] [Citation(s) in RCA: 165] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The frequency of colonization and intracellular localization of nontypeable Haemophilus influenzae (NTHi) in the lower respiratory tract was determined in healthy adults and in clinically stable and acutely ill chronic bronchitis (CB) patients. NTHi was recovered from bronchial wash or bronchial brush specimens in 6 of 23 (26%) stable CB patients and in 1 of 15 (7%) CB patients with a respiratory exacerbation. No NTHi (0 of 26) was recovered from lower tract specimens of healthy adults undergoing anesthesia for elective surgery. Molecular typing of NTHi strains revealed that five of nine patients with stable CB had different strains in upper respiratory tract and bronchial wash/brush specimens collected simultaneously. Four stable patients with CB had different strains recovered on repeat bronchoscopy. These results demonstrate the frequent colonization of the lower airways of stable CB patients with multiple strains of NTHi. Bronchial biopsies also were examined for intracellular NTHi by in situ hybridization and immunofluorescence microscopy. Intracellular NTHi were found in 0 of 7 healthy adults, 8 of 24 patients with clinically stable CB, and 13 of 15 acutely ill CB patients. This observation suggests a role for intracellular infection by NTHi in the pathogenesis of exacerbations of CB.
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Affiliation(s)
- V Bandi
- Department of Medicine, Baylor College of Medicine, Houston, Texas 77030, USA
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Abstract
Substance abuse by women is considered an individual pathology, and the larger social processes of recovery are seldom explored. This research study examined social factors that influenced completion of an outpatient women-centered substance abuse treatment program. The treatment records of a group of 15 women who completed the program were compared with a group who did not complete the program. More completers had previous life successes in the areas of education, job skills, and employment history. Completers also had fewer children, less involvement with child protective services, and lower levels of chaos, a construct that included the presence of two of any of the following in women's lives: child protective services, homelessness, psychiatric diagnosis, or domestic violence. Completion of substance abuse treatment seems more likely for women with personal and social resources. If programs are to be successful, adequate funding must be provided for both assessment and support of the social problems encountered by the most vulnerable women.
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Affiliation(s)
- P J Kelly
- Department of Family Nursing, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3200, USA.
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Marufu T, Siziya S, Tshimanga M, Murugasampillay S, Mason E, Manyame B. Factors associated with measles complications in Gweru, Zimbabwe. East Afr Med J 2001; 78:135-8. [PMID: 12002053 DOI: 10.4314/eamj.v78i3.9079] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To investigate factors associated with complications or death among measles cases. DESIGN A cross-sectional study. SETTING Health facilities in the city of Gweru, Zimbabwe. SUBJECTS Six hundred and thirty seven measles cases randomly selected from measles surveillance data. MAIN OUTCOME MEASURES (a) Associations of respiratory complications and diarrhoea with death among complicated cases; (b) associations of age at infection, gender of cases and vaccination status of cases with occurrence of either respiratory complications or diarrhoea or death among measles cases. RESULTS Among cases with respiratory complications, twenty two (29%) had died, while five (5%) had died among those with diarrhoea (OR=7.06,95% CI=2.55-22.35, p<0.001). On rates of respiratory complications among cases, age groups 24-59 and 60+ months were protective by 57% (95% CI=11-79%) and 76% (95% CI=52-88%) respectively compared to the age group <24 months, and vaccination was protective by 42% (95% CI=2-65%) compared to those unvaccinated. Concerning rates of diarrhoea among cases, the age group 60+ months was protective by 80% (95% CI=62-89%) compared to age group <60 months, while vaccination was protective by 64% (95% CI=42-77%) compared to those unvaccinated. With respect to rates of mortality among cases, age was protective by six per cent (95% CI=3-9 %) for every year older. CONCLUSION It was concluded that: (a) the risk of death was higher in cases with respiratory complications than diarrhoea; (b) the risk of complications and death was inversely related to age at infection and older age groups were protective against occurrence of complications or death; (c) the risk of complications was higher in unvaccinated cases and vaccination was protective against occurrence of complications.
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Affiliation(s)
- T Marufu
- Department of Community Medicine, University of Zimbabwe Medical School, Avondale, Harare
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Ramshaw BJ, Young D, Garcha I, Shuler F, Wilson R, White JG, Duncan T, Mason E. The role of multimedia interactive programs in training for laparoscopic procedures. Surg Endosc 2001; 15:21-7. [PMID: 11178755 DOI: 10.1007/s004640000319] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND The application of minimally invasive techniques to the performance of abdominal surgery by general surgeons has been perhaps the greatest advance in the history of general surgery. The safe adoption of many of these procedures, however, has been hampered by significant obstacles, mainly due to the problem of providing adequate training for surgeons. Outside of animal and cadaver labs, most training has been didactic in nature, and adoption rates after completion of these courses are discouraging. Multimedia interactive training has been used in a number of high-tech industries with great success. A >60% improvement in the learning curve after multimedia interactive training, as compared to traditional didactic training, has been reported. Multimedia interactive training programs for surgeons that use content and input from multiple experts in laparoscopic procedures have now been developed. METHODS Residents from a general surgery residency program who used these programs were asked to rate their effectiveness in increasing their knowledge and comfort level prior to their participation in a real procedure as the primary surgeon or first assistant. A comparison to other traditional training techniques was also made. Eleven residents completed 41 programs designed to teach one of five different laparoscopic procedures-cholecystectomy, fundoplication, appendectomy, colon resection, or hernia repair. RESULTS On a scale of 1 to 10, with 10 being the highest, the residents reported that the multimedia interactive training programs raised their knowledge level of the procedure from 6.0 to 8.7 (+2.7 point value increase after using the multimedia interactive program). The programs increased their comfort level when actually called on to perform or assist with the procedure from 5.3 to 8.1 (+2.8 point value increase after using the multimedia interactive program). In comparing the value of training methods for learning laparoscopic procedures, the residents rated text, lectures, videos, and animal labs at 4.7, 5.1, 6.0 and 7.3, respectively. By comparison, the residents rated the multimedia interactive training program at 8.8. CONCLUSION The use of multimedia interactive training programs in addition to current laparoscopic training courses may help to increase the safe adoption of laparoscopic procedures. These programs may be a beneficial adjunct to residency training programs.
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Affiliation(s)
- B J Ramshaw
- Department of Surgery, Atlanta Medical Center, GA 30312, USA
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Hsia J, Kemper E, Sofaer S, Bowen D, Kiefe CI, Zapka J, Mason E, Lillington L, Limacher M. Is insurance a more important determinant of healthcare access than perceived health? Evidence from the Women's Health Initiative. J Womens Health Gend Based Med 2000; 9:881-9. [PMID: 11074954 DOI: 10.1089/152460900750020919] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Our objectives were to explore health insurance status and insurance type, adjusted for self-reported and perceived health variables, as determinants of having and using a usual care provider in the Women's Health Initiative (WHI) Observational Study (OS). This analysis describes insurance status in a large, diverse group of older women and tests the hypothesis that insurance was a key predictor of their access to healthcare in the mid-1990s. Multiple logistic regression analysis was used to evaluate determinants of having visited a usual healthcare provider within the proceeding 12 months, using cross-sectional information provided by a population-based cohort of 55,278 postmenopausal women. Five percent of women younger than 65 years and 0.2% of women 65 or older in the OS cohort lacked health insurance. Among the 31,684 women, aged 50-64 years, Hispanic women and those with fewer years of education and lower household income and who were current smokers were less likely, and those lacking insurance were the least likely, to have seen their healthcare provider within the preceding year. Among 23,594 women, aged 65-79 years, African American and Hispanic women and those with lower household income, and Medicare only and those who were current smokers, were less likely to have seen their healthcare provider within the preceding year. In both age groups, women with chronic medical conditions and poorer perceived health scores and those with prepaid insurance were more likely to have seen their healthcare provider. In the WHI OS, both health (self-reported and perceived) and type of health insurance remained independently associated with having visited a usual healthcare provider after multivariate adjustment for one another as well as for pertinent sociodemographic characteristics.
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Affiliation(s)
- J Hsia
- Department of Medicine, George Washington University, Washington, DC, USA
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Abstract
Postresuscitation myocardial dysfunction has been recognized as a leading cause of the high postresuscitation mortality rate. We investigated the effects of ischemic preconditioning and activation of ATP-sensitive K(+) (K(ATP)) channels on postresuscitation myocardial function. Ventricular fibrillation (VF) was induced in 25 Sprague-Dawley rats. Cardiopulmonary resuscitation (CPR), including mechanical ventilation and precordial compression, was initiated after 4 min of untreated VF. Defibrillation was attempted after 6 min of CPR. The animals were randomized to five groups treated with 1) ischemic preconditioning, 2) K(ATP) channel opener, 3) ischemic preconditioning with K(ATP) channel blocker administered 1 min after VF, 4) K(ATP) channel blocker administered 45 min before induction of ischemic preconditioning, and 5) placebo. Postresuscitation myocardial function, as measured by the rate of left ventricular pressure increase at 40 mmHg, the rate of left ventricular decline, cardiac index, and duration of survival, was significantly improved in both preconditioned and K(ATP) channel opener-treated animals. K(ATP) channel blocker administered 45 min before induction of ischemic preconditioning completely abolished the myocardial protective effects of preconditioning. We conclude that ischemic preconditioning significantly improved post-CPR myocardial function and survival. These results also provide evidence that the myocardial protective effects of ischemic preconditioning are mediated by K(ATP) channel activation.
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Affiliation(s)
- W Tang
- Institute of Critical Care Medicine, Palm Springs 92262, California, USA
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Hsia J, Kemper E, Kiefe C, Zapka J, Sofaer S, Pettinger M, Bowen D, Limacher M, Lillington L, Mason E. The importance of health insurance as a determinant of cancer screening: evidence from the Women's Health Initiative. Prev Med 2000; 31:261-70. [PMID: 10964640 DOI: 10.1006/pmed.2000.0697] [Citation(s) in RCA: 201] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Amid current changes in health care access across the United States, the importance of health insurance status and insurance type relative to demographic, actual, and perceived health variables as determinants of screening for breast, colorectal, and cervical cancer is uncertain. This analysis evaluates the hypothesis that health insurance independently predicts cancer screening in the Women's Health Initia tive Observational Study cohort. METHODS Questionnaire data from 55,278 women en rolled in the Women's Health Initiative Observational Study between September 1994 and February 1997 were analyzed by multiple logistic regression to identify predictors of self-reported mammography within 2 years, Pap smear within 3 years, and stool guaiac or flexible sigmoidoscopy within 5 years. RESULTS Positive determinants of reporting cancer screening were age, ethnic origin, household income, educational level, family history of cancer, having a usual care provider, time since last provider visit, and insurance status and type. Smoking, diabetes, and, among older women, prior cardiovascular events were negative determinants of cancer screening. Among women younger than 65, lacking health insurance or having fee-for-service insurance was strongly associated with failure to report cancer screening, independently of having or using a usual care provider and of demographics, self-perceived health, and health characteristics. Among women 65 and older, those with Medicare alone were less likely, whereas those with Medicare + prepaid insurance were more likely, to report cancer screening. CONCLUSIONS In the Women's Health Initiative Obser vational Study, a large, diverse group of older women, health insurance type and status were among the most important determinants of cancer screening indepen dent of demographics, chronic health conditions, and self-perceived health characteristics.
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Affiliation(s)
- J Hsia
- Department of Medicine, George Washington University, Washington, DC, USA.
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Abstract
Utilization of health services is variable but may contribute to the well being of women during pregnancy. If people understand when there is a risk of illness or death, they are likely to cooperate in reducing those risks and participate in their own care. In rural communities people need to be provided with simple but scientifically-sound technology adapted to their understanding and needs. One such technology is the home-based maternal record (HBMR). We assess the feasibility, understanding and usage of a locally adapted HBMR of the World Health Organization prototype in a rural community in Binga district, Zimbabwe.
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Affiliation(s)
- K Mahomed
- Department of Obstetrics, University of Zimbabwe, Avondale, Harare.
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50
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