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Heard M, Marmura H, Bryant D, Litchfield R, McCormack R, MacDonald P, Spalding T, Verdonk P, Peterson D, Bardana D, Rezansoff A, Getgood A. Corrigendum to 'No increase in adverse events with lateral extra-articular tenodesis augmentation of anterior cruciate ligament reconstruction - Results from the stability randomized trial' [Journal of ISAKOS 8 (2023) 246-254]. J ISAKOS 2023; 8:513. [PMID: 37845163 DOI: 10.1016/j.jisako.2023.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Affiliation(s)
- M Heard
- Deparment of Surgery, University of Calgary, T2N 1N4, Canada; Banff Sport Medicine, T1W 0L5, Canada
| | - H Marmura
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; School of Physical Therapy, Western University, N6A 3K7, Canada
| | - D Bryant
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; School of Physical Therapy, Western University, N6A 3K7, Canada
| | - R Litchfield
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; Department of Surgery, Schulich School of Medicine and Dentistry, Western University, N6A 5C1, Canada
| | - R McCormack
- Department of Orthopaedics, University of British Columbia, V5Z 1M9, Canada; New West Orthopaedic & Sports Medicine Centre, V3L 5P5, Canada
| | - P MacDonald
- Department of Surgery, University of Manitoba, R3A 1R9, Canada; Pan Am Clinic, R3M 3E4, Canada
| | - T Spalding
- University Hospital Coventry and Warwickshire NHS Trust, CV2 2DX, UK
| | - P Verdonk
- Department of Physical Medicine and Orthopedics, Ghent University, 9000, Belgium; Antwerp Orthopedic Center, 2018, Belgium
| | - D Peterson
- Department of Surgery, McMaster University, L8S 4K1, Canada
| | - D Bardana
- Department of Surgery, Queen's University, K7L 2V7, Canada
| | - A Rezansoff
- Deparment of Surgery, University of Calgary, T2N 1N4, Canada; University of Calgary Sport Medicine Centre, T2N 1N4, Canada
| | - A Getgood
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; Department of Surgery, Schulich School of Medicine and Dentistry, Western University, N6A 5C1, Canada.
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Heard M, Marmura H, Bryant D, Litchfield R, McCormack R, MacDonald P, Spalding T, Verdonk P, Peterson D, Bardana D, Rezansoff A, Getgood A. No increase in adverse events with lateral extra-articular tenodesis augmentation of anterior cruciate ligament reconstruction - Results from the stability randomized trial. J ISAKOS 2023; 8:246-254. [PMID: 36646169 DOI: 10.1016/j.jisako.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 12/02/2022] [Accepted: 12/08/2022] [Indexed: 01/15/2023]
Abstract
OBJECTIVES Results from the Stability Study suggest that adding a lateral extra-articular tenodesis (LET) to a hamstring tendon autograft reduces the rate of anterior cruciate ligament reconstruction (ACLR) failure in high-risk patients. The purpose of this study is to report adverse events over the 2-year follow-up period and compare groups (ACLR alone vs. ACLR + LET). METHODS Stability is a randomized clinical trial comparing hamstring tendon ACLR with and without LET. Patients aged 14-25 years with an ACL deficient knee were included. Patients were followed and adverse events documented (type, actions taken, resolution) with visits at 3, 6, 12, and 24 months postoperatively. Adverse events were categorized as none, minor medical, minor surgical, contralateral ACL rupture, or graft rupture. Patient reported outcome measures (PROMs) collected at each visit included the Knee Injury and Osteoarthritis Outcome Score (KOOS), International Knee Documentation Committee Score (IKDC), and ACL Quality of Life Questionnaire (ACL-QOL). RESULTS In total, 618 patients were randomized (mean age 18.9 years, 302 (49%) male). Forty-five patients (7%) suffered graft rupture; 34 (11%) in the ACLR group compared to 11 (4%) in the ACLR + LET group (RRR = 0.67, 95% CI 0.36 to 0.83, p < 0.001). There were no differences in effusion or infection rates between groups. The ACLR + LET group experienced an increased number of hardware removals (10 vs. 4). Overall, the rate of minor medical events (11%), minor surgical events (7%), and ipsilateral or contralateral ACL tears (10%) were low considering the high-risk patient profile. Increasing severity of adverse events was associated with lower PROMs at 24 months post-operative. Patients in the ACLR + LET group reported greater degree of pain at 3 months only. There were no clinically significant differences in range of motion between groups. CONCLUSIONS The addition of LET to hamstring tendon autograft ACLR in young patients at high risk of re-injury resulted in a statistically significant reduction in graft rupture. While the addition of LET may increase rates of hardware irritation, there was no significant increase in overall rates of minor medical adverse events, minor surgical events, or overall re-operation rates. The concerns regarding complications associated with a LET did not materialize in this study. LEVEL OF EVIDENCE Level I.
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Affiliation(s)
- M Heard
- Deparment of Surgery, University of Calgary, T2N 1N4, Canada; Banff Sport Medicine, T1W 0L5, Canada
| | - H Marmura
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; School of Physical Therapy, Western University, N6A 3K7, Canada
| | - D Bryant
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; School of Physical Therapy, Western University, N6A 3K7, Canada
| | - R Litchfield
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; Department of Surgery, Schulich School of Medicine and Dentistry, Western University, N6A 5C1, Canada
| | - R McCormack
- Department of Orthopaedics, University of British Columbia, V5Z 1M9, Canada; New West Orthopaedic & Sports Medicine Centre, V3L 5P5, Canada
| | - P MacDonald
- Department of Surgery, University of Manitoba, R3A 1R9, Canada; Pan Am Clinic, R3M 3E4, Canada
| | - T Spalding
- University Hospital Coventry and Warwickshire NHS Trust, CV2 2DX, UK
| | - P Verdonk
- Department of Physical Medicine and Orthopedics, Ghent University, 9000, Belgium; Antwerp Orthopedic Center, 2018, Belgium
| | - D Peterson
- Department of Surgery, McMaster University, L8S 4K1, Canada
| | - D Bardana
- Department of Surgery, Queen's University, K7L 2V7, Canada
| | - A Rezansoff
- Deparment of Surgery, University of Calgary, T2N 1N4, Canada; University of Calgary Sport Medicine Centre, T2N 1N4, Canada
| | - A Getgood
- Fowler Kennedy Sport Medicine Clinic, N6A 3K7, Canada; Department of Surgery, Schulich School of Medicine and Dentistry, Western University, N6A 5C1, Canada.
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Goemans N, McDonald C, Muntoni F, Signorovitch J, Sajeev G, Done N, Manzur A, Wong B, Tian C, Mercuri E, He C, Peterson D, Akbarnejad H, Ward S. P.65 Consistency of changes in percent-predicted forced vital capacity between real-world data and trial placebo arms in ambulatory Duchenne muscular dystrophy. Neuromuscul Disord 2022. [DOI: 10.1016/j.nmd.2022.07.113] [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: 11/05/2022]
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Perkins R, Swallow E, Wang W, Gao E, Olson S, Sung J, Nguyen H, Peterson D, Billmyer E, Chang A. POS-050 THE PATIENT JOURNEY FOR IMMUNOGLOBULIN A NEPHROPATHY: DIAGNOSTIC DELAY AND CHANGE IN KIDNEY FUNCTION FROM FIRST CLINICAL SIGN. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.04.072] [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: 11/16/2022] Open
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Kerns S, Morlang A, Lee S, Hall W, Peterson D, Marples B, Zhang H, Bylund K, Rosenzweig D, de Ruyck K, Rosenstein B, CaamaNo A, Vega A, Parker C, West C, Janelsins M, Chen Y, Messing E, Morrow G. Use of Angiotensin Converting Enzyme Inhibitors and Risk of Late Bladder Toxicity Following Radiotherapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.901] [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: 10/20/2022]
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Peterson D, Barone P, Lenderts B, Schwartz C, Feigenbutz L, St. Clair G, Jones S, Svitashev S. Advances in Agrobacterium transformation and vector design result in high-frequency targeted gene insertion in maize. Plant Biotechnol J 2021; 19:2000-2010. [PMID: 33934470 PMCID: PMC8486252 DOI: 10.1111/pbi.13613] [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] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/13/2021] [Accepted: 04/26/2021] [Indexed: 05/03/2023]
Abstract
CRISPR-Cas is a powerful DNA double-strand break technology with wide-ranging applications in plant genome modification. However, the efficiency of genome editing depends on various factors including plant genetic transformation processes and types of modifications desired. Agrobacterium infection is the preferred method of transformation and delivery of editing components into the plant cell. While this method has been successfully used to generate gene knockouts in multiple crops, precise nucleotide replacement and especially gene insertion into a pre-defined genomic location remain highly challenging. Here, we report an efficient, selectable marker-free site-specific gene insertion in maize using Agrobacterium infection. Advancements in maize transformation and new vector design enabled increase of targeted insertion frequencies by two orders of magnitude in comparison to conventional Agrobacterium-mediated delivery. Importantly, these advancements allowed not only a significant improvement of the frequency, but also of the quality of generated events. These results further enable the application of genome editing for trait product development in a wide variety of crop species amenable to Agrobacterium-mediated transformation.
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Szkwarko D, Amisi JA, Peterson D, Burudi S, Angala P, Carter EJ. Using a mobile application to improve pediatric presumptive TB identification in western Kenya. Int J Tuberc Lung Dis 2021; 25:468-474. [PMID: 34049609 DOI: 10.5588/ijtld.20.0890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Early recognition of TB symptoms in children is critical in order to link children to appropriate testing and treatment. Healthcare workers (HCWs) in high TB burden countries are often overburdened with competing clinical priorities, leading to incomplete presumptive TB screening. We assessed if implementing a community health volunteer (CHV) led presumptive pediatric TB mobile android application (PPTBMAPP) in pediatric outpatient, primary care clinics in western Kenya would be feasible, appropriate, and effective.METHODS: We used a mixed-methods participatory, iterative approach to design and implement the PPTBMAPP during a 6-month period. We compared the proportion of children identified in presumptive TB and active TB disease registers out of all patients before and after the implementation of the intervention.RESULTS: Of the 1787 children aged ≤15 years screened using the PPTBMAPP, 376 (21%) met the criteria for presumptive TB. There was a statistically significant increase in the proportion of children to all patients in the presumptive TB registers (97/908, 10.7% vs. 160/989, 16.2%; P = 0.0005), and a trend towards an increase in the proportion of children to all patients in the TB case register (17/117, 14.5% vs. 15/83, 18.1%; P = 0.5). HCWs interviewed commented that the application sped up the presumptive TB screening process.CONCLUSION: Our CHV-led mobile screening intervention significantly increased presumptive TB notification. HCWs reported that the mobile screening intervention was feasible, appropriate, and effective.
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Affiliation(s)
- D Szkwarko
- Department of Family Medicine, Warren Alpert Medical School, Brown University, Providence, RI, Department of Family Medicine and Community Health, University of Massachusetts Medical School, Worcester, MA, USA
| | - J A Amisi
- Department of Family Medicine, College of Health Sciences, Moi University, Eldoret, Kenya, Academic Model Providing Access to Healthcare (AMPATH), Eldoret, Kenya
| | - D Peterson
- Department of Family Medicine, Warren Alpert Medical School, Brown University, Providence, RI
| | - S Burudi
- Webuye County Hospital, Webuye, Kenya
| | - P Angala
- Center for Health Solutions-Kenya, Nairobi, Kenya
| | - E J Carter
- Department of Medicine, Warren Alpert Medical School, Brown University, Providence, RI, USA
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Gao H, Mutti J, Young JK, Yang M, Schroder M, Lenderts B, Wang L, Peterson D, St. Clair G, Jones S, Feigenbutz L, Marsh W, Zeng M, Wagner S, Farrell J, Snopek K, Scelonge C, Sopko X, Sander JD, Betts S, Cigan AM, Chilcoat ND. Complex Trait Loci in Maize Enabled by CRISPR-Cas9 Mediated Gene Insertion. Front Plant Sci 2020; 11:535. [PMID: 32431725 PMCID: PMC7214728 DOI: 10.3389/fpls.2020.00535] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 04/08/2020] [Indexed: 05/03/2023]
Abstract
Modern maize hybrids often contain biotech and native traits. To-date all biotech traits have been randomly inserted in the genome. Consequently, developing hybrids with multiple traits is expensive, time-consuming, and complex. Here we report using CRISPR-Cas9 to generate a complex trait locus (CTL) to facilitate trait stacking. A CTL consists of multiple preselected sites positioned within a small well-characterized chromosomal region where trait genes are inserted. We generated individual lines, each carrying a site-specific insertion landing pad (SSILP) that was targeted to a preselected site and capable of efficiently receiving a transgene via recombinase-mediated cassette exchange. The selected sites supported consistent transgene expression and the SSILP insertion had no effect on grain yield. We demonstrated that two traits residing at different sites within a CTL can be combined via genetic recombination. CTL technology is a major step forward in the development of multi-trait maize hybrids.
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Affiliation(s)
- Huirong Gao
- Research and Development, Corteva Agriscience, Johnston, IA, United States
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Zygmunt LC, Paisley SD, Bromley G, Durany G, Ellis C, Elrefaie J, Fein R, Lewis S, Lee S, Marlett J, Peterson D, Prodolliet J, Tassin D, Weisz J, White P, Xia L. Enzymatic Method for Determination of (1→3)(1→4)-Beta-D-glucans in Grains and Cereals: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/76.5.1069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
The McCleary enzymatic assay for mixed linkage (1→3)(1→4)-beta-D-glucans has been modified to apply to oat and barley fractions and ready-to-eat (RTE) cereals. The proposed method involves lower sample concentrations; stirring the samples; a longer, warmer lichenase digestion; and longer beta-glucosidase digestion. These changes result in higher recovery of beta-glucan. This modification expands on the American Association of Cereal Chemists (AACC) Method 32-22 by the addition of a desugaring procedure, which is necessary for RTE cereals. Results from collaborative studies sponsored by AACC and AOAC demonstrate good precision for an enzymatic assay. The average relative standard deviation for reproducibility (RSDR, a measure of inter laboratory variation) for 20 oat, barley, and cereal samples was 9.7%. The average RSD for repeatability (RSDr, intralaboratory variation) was 5.0%. The enzymatic method has been adopted first action by AOAC International for determination of beta-glucans in oat and barley fractions, and ready-to-eat cereals.
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Affiliation(s)
- Lucian C Zygmunt
- The Quaker Oats Co., John Stuart Research Laboratory, 617 W Main St, Barrington, IL 60010
| | - Steven D Paisley
- The Quaker Oats Co., John Stuart Research Laboratory, 617 W Main St, Barrington, IL 60010
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Betts SD, Basu S, Bolar J, Booth R, Chang S, Cigan AM, Farrell J, Gao H, Harkins K, Kinney A, Lenderts B, Li Z, Liu L, McEnany M, Mutti J, Peterson D, Sander JD, Scelonge C, Sopko X, Stucker D, Wu E, Chilcoat ND. Uniform Expression and Relatively Small Position Effects Characterize Sister Transformants in Maize and Soybean. Front Plant Sci 2019; 10:1209. [PMID: 31708936 PMCID: PMC6821721 DOI: 10.3389/fpls.2019.01209] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/03/2019] [Indexed: 05/20/2023]
Abstract
Development of transgenic cell lines or organisms for industrial, agricultural, or medicinal applications involves inserting DNA into the target genome in a way that achieves efficacious transgene expression without a deleterious impact on fitness. The genomic insertion site is widely recognized as an important determinant of success. However, the effect of chromosomal location on transgene expression and fitness has not been systematically investigated in plants. Here we evaluate the importance of transgene insertion site in maize and soybean using both random and site-specific transgene integration. We have compared the relative contribution of genomic location on transgene expression levels with other factors, including cis-regulatory elements, neighboring transgenes, genetic background, and zygosity. As expected, cis-regulatory elements and the presence/absence of nearby transgene neighbors can impact transgene expression. Surprisingly, we determined not only that genomic location had the least impact on transgene expression compared to the other factors that were investigated but that the majority of insertion sites recovered supported transgene expression levels that were statistically not distinguishable. All 68 genomic sites evaluated were capable of supporting high-level transgene expression, which was also consistent across generations. Furthermore, multilocation field evaluation detected no to little decrease in agronomic performance as a result of transgene insertion at the vast majority of sites we evaluated with a single construct in five maize hybrid backgrounds.
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Affiliation(s)
| | | | - Joy Bolar
- Corteva Agriscience, Johnston, IA, United States
| | - Russ Booth
- Corteva Agriscience, Johnston, IA, United States
| | - Shujun Chang
- Benson Hill Biosystems, Inc. St. Louis, MO, United States
| | | | | | - Huirong Gao
- Corteva Agriscience, Johnston, IA, United States
| | | | | | | | | | - Lu Liu
- Corteva Agriscience, Johnston, IA, United States
| | | | | | | | | | - Chris Scelonge
- KWS Gateway Research Center, LLC, St. Louis, MO, United States
| | - Xiaoyi Sopko
- Corteva Agriscience, Johnston, IA, United States
| | - Dave Stucker
- Corteva Agriscience, Johnston, IA, United States
| | - Emily Wu
- Corteva Agriscience, Johnston, IA, United States
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Hall W, Baran A, Peterson D, Bergom C, Lawton C, Zhang H, Bylund K, Messing E, Chen Y, Morrow G, Kerns S. Characterization of the Host Immuno-Inflammatory State in Response to Radiation Therapy and Correlation with Patient Reported Toxicities In Prostate Adenocarcinoma, A Prospective Observational Trial. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.613] [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: 11/30/2022]
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Irvine S, Awan M, Chharawala F, Bhagawati D, Lawrance N, Peck G, Peterson D, Banerjee S, Camp S. Factors affecting patient flow in a neurosurgery department. Ann R Coll Surg Engl 2019; 102:18-24. [PMID: 31233336 DOI: 10.1308/rcsann.2019.0090] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Patient flow is the process by which movement of patients and clinical productivity is achieved. The objectives of this study were to implement and evaluate the NHS Improvement SAFER patient flow bundle, evaluate the impact of the Red2Green initiative, and assess the impact of frailty on patient flow. MATERIALS AND METHODS All patients admitted to a neurosurgery unit from 1 September to 30 November 2017 were included. Using guidance set out by NHS, data were prospectively collected from daily ward lists and patient notes, including demographics, admission and discharge details, length of stay, anticipated discharge date, red days with reasons and frailty (Rockwood Clinical Frailty Scale). NHS reference costs were used for cost analyses. RESULTS A total of 420 patients (55% elective) were included, totalling 3909 bed days. All patients received daily senior reviews before midday, and anticipated discharge dates were set at daily multidisciplinary team meetings. Ten per cent of patients were discharged before midday. There were 21% (837) red days, significantly more (76%) for emergency patients (639 vs 198 elective; P < 0.001); 63% red days were attributed to awaiting a bed in a local hospital; 25% (106) patients were classed as frail (50 elective), which was associated with a significantly longer length of stay (17.3 vs 6; P < 0.01), and more red days (615 vs 222; p<0.01). Considering excess bed charges and lost revenue (with penalties), red days cost over £1 million per year. CONCLUSIONS SAFER has identified areas for improvement in patient flow, with obvious cost implications. It has created a platform for discussion within the referral network and identified a role for a geriatric liaison service.
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Affiliation(s)
- S Irvine
- University Hospital North Durham, Durham, UK
| | - M Awan
- Neurosurgery Department, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - F Chharawala
- Neurosurgery Department, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - D Bhagawati
- Neurosurgery Department, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - N Lawrance
- Improvement Team, Imperial College Healthcare NHS Trust, London, UK
| | - G Peck
- Major Trauma Centre, St Mary's Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - D Peterson
- Neurosurgery Department, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - S Banerjee
- Stroke Medicine, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - S Camp
- Neurosurgery Department, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
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Salimnia T, Peterson D, Ralh N, Qaqi O. NOVEL PERCUTANEOUS THROMBECTOMY DEVICE FOR PULMONARY EMBOLISM PATIENTS WITH TPA CONTRAINDICATION, TPA FAILURE, OR TOO HIGH RISK FOR SURGICAL THROMBECTOMY. Chest 2019. [DOI: 10.1016/j.chest.2019.04.126] [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] Open
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Zheng L, Cockerham G, Hoffman J, Heydlauf M, Peterson D, Bhalla A. A statistical analysis solution to measure the impact of sample processing methods on diagnostic laboratory turnaround time. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.083] [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: 11/30/2022]
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Irvine S, Chharawala F, Lawrance N, Peterson D, Banerjee S, Camp S. FP1-4 Factors affecting patient flow in a neurosurgery department. J Neurol Psychiatry 2019. [DOI: 10.1136/jnnp-2019-abn.71] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
ObjectivesThe objectives of this study were to audit the NHS Improvement SAFER patient flow bundle, evaluate the impact of the Red2Green initiative, and assess the impact of frailty on patient flow.DesignA prospective review over a 3 month period.SubjectsAll patients admitted to a Neurosurgery Unit from 01/09/2017 to 30/11/2017 were included.MethodsData were prospectively collected from daily ward lists and patient notes, including demographics, admission/discharge details, length of stay (LOS), expected discharge date, red days with reasons, and frailty (Rockwood Clinical Frailty Scale). NHS Improvement Reference Costs were used for cost analyses.Results420 patients (55% elective) were included, total 3909 bed days. All patients received a daily senior review before midday, and EDDs were set at daily MDT meetings. 10% patients were discharged before midday. There were 21% (837) red days, significantly more (76%) for emergency patients (639 vs 198 elective; p<0.001). 63% red days were attributed to awaiting a bed in a local hospital. 25% (106) patients were classed as frail (50 elective), which was associated with a significantly longer LOS (17.3 vs 6; p<0.01), and more red days (615 vs 222; p<0.01). Considering bed costs and lost revenue (with penalties), red days cost is estimated at over £1M per year.ConclusionsSAFER has identified areas for improvement in patient flow, with obvious cost implications. It has created a platform for discussion within the referral network, and identified a role for a geriatric liaison service.
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Affiliation(s)
- M Bhandari
- Department of Surgery, Division of Orthopaedic Surgery, McMaster University, Hamilton, Canada
| | - D Peterson
- Department of Surgery, Division of Orthopaedic Surgery, McMaster University, Hamilton, Canada
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Abstract
AIMS The aims of this systematic review were to describe the quantity and methodological quality of meta-analyses in orthopaedic surgery published during the last 17 years. MATERIALS AND METHODS MEDLINE, EMBASE, and PubMed, between 1 January 2000 and 31 December 2016, were searched for meta-analyses in orthopaedic surgery dealing with at least one surgical intervention. Meta-analyses were included if the interventions involved a human muscle, ligament, bone or joint. RESULTS A total of 392 meta-analyses met eligibility criteria, for which the mean AMSTAR quality score was 7.1/11. There was a positive correlation between the year of publication and the quality of the meta-analysis (r = 0.238, p < 0.001). Between 2000 and 2011, the mean AMSTAR score corresponded to that of a medium quality review. However, between 2012 and 2016, the mean scores have been consistently equivalent to those of a high-quality review. The number of meta-analyses published increased 10-fold between 2005 and 2014. CONCLUSION The quantity and quality of meta-analyses in orthopaedic surgery which have been published has increased, reaching a plateau in 2012. Methodological flaws remain to be addressed in future meta-analyses in order to continue increasing the quality of the orthopaedic literature. Cite this article: Bone Joint J 2018;100-B:1270-4.
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Affiliation(s)
- A Manta
- Department of Medicine, University of Ottawa, Ottawa, Canada
| | - E Opingari
- Institute of Medical Science, University of Toronto, Toronto, Canada
| | - A Saleh
- Institute of Medical Science, University of Toronto, Toronto, Canada
| | - N Simunovic
- Department of Surgery, Division of Orthopaedic Surgery, McMaster University, Hamilton, Canada
| | - A Duong
- Department of Surgery, Division of Orthopaedic Surgery, McMaster University, Hamilton, Canada
| | - S Sprague
- Department of Surgery, Division of Orthopaedic Surgery, McMaster University, Hamilton, Canada
| | - D Peterson
- Department of Surgery, Division of Orthopaedic Surgery, McMaster University, Hamilton, Canada
| | - M Bhandari
- Department of Health Research Methods, Evidence and Impact and Department of Surgery, Division of Orthopaedic Surgery, McMaster University, Hamilton, Canada
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Affiliation(s)
- L. Bielby
- Department of Health and Human Services Victoria; Blood Matters Program; Australian Red Cross Blood Service; Melbourne VIC Australia
| | - D. Peterson
- Women's and Children's Hospital; BloodSafe eLearning Australia; North Adelaide SA Australia
| | - T. Spigiel
- Australian Red Cross Blood Service; Adelaide SA Australia
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Kay J, Naji L, de SA D, Simunovic N, Peterson D, Samuelsson K, Musahl V, Ayeni OR. Graft choice has no significant influence on the rate of return to sport at the preinjury level after revision anterior cruciate ligament reconstruction: a systematic review and meta-analysis. J ISAKOS 2017. [DOI: 10.1136/jisakos-2016-000113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ordidge K, Grech-Sollars M, Honeyfield L, Khan S, O'Neill K, Peterson D, Vaqas B, Roncaroli F, Towey D, Barwick T, Waldman A. PO2818F- FLUOROMETHYLCHOLINE (18F-FMC) PET/CT AND MAGNETIC RESONANCE SPECTROSCOPY (MRS) IMAGING AND TISSUE BIOMARKERS OF CELL MEMBRANE TURNOVER IN PRIMARY BRAIN GLIOMAS- A PILOT STUDY. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov284.24] [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: 11/14/2022] Open
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Maroudas EM, Peterson D, Noehren B, The S, Donohoo C, Dupont-Versteegden EE. YMCA LIVESTRONG Program Analyzed. Med Sci Sports Exerc 2015. [DOI: 10.1249/01.mss.0000478420.77696.b5] [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: 11/21/2022]
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Waldman A, Upadhyay N, Adams A, Peterson D, Roncaroli F. NI-02 * ELEVATED MYOINOSITOL IN DIFFUSE ASTROCYTOMA; A MARKER OF ANAPLASTIC PHENOTYPE, AND NOT ATTRIBUTABLE TO MICROGLIAL INFILTRATION. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou264.2] [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: 11/14/2022] Open
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O'Brien T, Purkey H, Hitz A, Peterson D, Boudreau A, Delnagro C, Kwong M, Hong R, Gao M, Pang J, Vanderbilt A, Williams S, Salphati L, Sampath D, Hatzivassiliou G, Evangelista M. Abstract 964: Inhibiting glycolysis with an LDHA inhibitor: A new solution to an old problem. Mol Cell Biol 2014. [DOI: 10.1158/1538-7445.am2014-964] [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: 11/16/2022] Open
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24
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Gurariy G, Peterson D, Berryhill M, Caplovitz G. The Neural Fate of Individual Item Representations in Visual Working Memory. J Vis 2014. [DOI: 10.1167/14.10.165] [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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25
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Abouassaly M, Peterson D, Salci L, Farrokhyar F, D'Souza J, Bhandari M, Ayeni OR. Surgical management of osteochondritis dissecans of the knee in the paediatric population: a systematic review addressing surgical techniques. Knee Surg Sports Traumatol Arthrosc 2014; 22:1216-24. [PMID: 23680989 DOI: 10.1007/s00167-013-2531-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 05/06/2013] [Indexed: 10/26/2022]
Abstract
PURPOSE Several case series have been published exploring a variety of surgical treatments for osteochondritis dissecans (OCD) in patients 18 years and younger, but a systematic review is currently lacking. This systemic review identifies the various surgical techniques reported in the literature for treating OCD and assesses the effectiveness of these treatments based on functional outcomes and radiographic healing. METHODS A search of the EMBASE and MEDLINE databases was performed to identify clinical studies reporting outcomes of surgical management of OCD in the knee. A quality assessment of the included articles was conducted independently by 2 reviewers using a quality assessment tool developed by Yang et al. RESULTS A total of 25 papers including 470 patients aged ≤18 years (516 lesions) met the eligibility criteria and were reviewed. Surgical techniques for stable lesions included (arthroscopic and open) transarticular drilling, either alone (41%) or with bioabsorbable pin fixation (3%), extra-articular drilling (29%) and fixation with bioabsorbable screws (4%) or bone pegs (4%). For unstable lesions, surgical techniques included (arthroscopic and open) fixation with bioabsorbable pins (9%), metal screws (4%), bone pegs (4 %), osteochondral plugs (3%) or bioabsorbable screws (2%), as well as transarticular drilling with bioabsorbable pin fixation (3%) and drilling with metal screw fixation (2%). CONCLUSION The most common techniques were transarticular drilling for stable lesions and bioabsorbable pin fixation for unstable lesions. The key findings were that the vast majority of lesions healed postoperatively, regardless of technique, and that high-quality trials are required to more appropriately compare the effectiveness of techniques. LEVEL OF EVIDENCE Systematic review, Level IV.
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Affiliation(s)
- M Abouassaly
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University Medical Center, 1200 Main St. West, Room 4E17, Hamilton, ON, L8N 3Z5, Canada
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Abstract
Parecoxib (Dynastat) is a parenteral cyclooxygenase-2 inhibitor available in Europe. Clinical trials have reported a benefit in reducing pain following oral, orthopedic, gynecologic and cardiac surgeries. The overall efficacy was dose-related and similar to ketorolac (Toradol). Several trials reported an opioid-sparing effect with parecoxib. No trials have reported significantly fewer opioid-related gastrointestinal side effects (e.g., nausea, vomiting, constipation and intestinal ileus) when opioids were administered with parecoxib versus placebo. Gastroduodenal ulcers, gastric ulcers and duodenal ulcers or erosions were less common with parecoxib than ketorolac. Parecoxib does not affect platelet aggregation, interfere with the antiplatelet affect of aspirin, affect prothrombin and partial thromboplastin time or platelet counts when administered with heparin.
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Affiliation(s)
- Anthony S Dalpiaz
- Department of Pharmacy Services, University of Utah Hospitals and Clinics, 50 North Medical Drive, Salt Lake City, UT 84132, USA.
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Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Xiao T, Martin L, Powell A, Wilkinson G, Mendez H, Asner DM, Tatishvili G, Ge JY, Huang GS, Miller DH, Pavlunin V, Shipsey IPJ, Xin B, Adams GS, Hu D, Moziak B, Napolitano J, Ecklund KM, Insler J, Muramatsu H, Park CS, Pearson LJ, Thorndike EH, Ricciardi S, Thomas C, Artuso M, Blusk S, Mountain R, Skwarnicki T, Stone S, Zhang LM, Bonvicini G, Cinabro D, Lincoln A, Smith MJ, Zhou P, Zhu J, Naik P, Rademacker J, Edwards KW, Randrianarivony K, Briere RA, Vogel H, Onyisi PUE, Rosner JL, Alexander JP, Cassel DG, Das S, Ehrlich R, Gibbons L, Gray SW, Hartill DL, Heltsley BK, Kreinick DL, Kuznetsov VE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Sun WM, Yelton J, Rubin P, Lowrey N, Mehrabyan S, Selen M, Wiss J, Libby J, Kornicer M, Mitchell RE, Tarbert CM, Besson D, Pedlar TK, Cronin-Hennessy D, Hietala J. First measurement of the form factors in the decays D0 → ρ- e+ ν(e) and D+ → ρ0 e+ ν(e). Phys Rev Lett 2013; 110:131802. [PMID: 23581310 DOI: 10.1103/physrevlett.110.131802] [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] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Indexed: 06/02/2023]
Abstract
The beauty to up quark coupling constant |V(ub)| can be extracted from B → ρ e+ ν(e) combined with the form factors for D → K* e+ ν(e) and B → V ℓ+ ℓ- and D → ρ e+ ν(e). Using the entire CLEO-c ψ(3770) → DD event sample, corresponding to an integrated luminosity of 818 pb(-1) and approximately 5.4×10(6) DD events, we measure the form factors for the decays D0 → ρ- e+ ν(e) and D+ → ρ0 e+ ν(e) for the first time and the branching fractions with improved precision. A four-dimensional unbinned maximum likelihood fit determines the form factor ratios to be V(0)/A1(0)=1.48±0.15±0.05 and A2(0)/A1(0)=0.83±0.11±0.04. Assuming Cabibbo-Kobayashi-Maskawa unitarity, the known D meson lifetimes, and our measured branching fractions we obtain the form factor normalizations A1(0), A2(0), and V(0). We also present a measurement of the branching fraction for D+ → ω e+ ν(e) with improved precision.
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Affiliation(s)
- S Dobbs
- Northwestern University, Evanston, Illinois 60208, USA
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Leo MC, Peterson D, Haas M, LeFebvre R, Bhalerao S. Development and psychometric evaluation of an evidence-based practice questionnaire for a chiropractic curriculum. J Manipulative Physiol Ther 2012. [PMID: 23206964 DOI: 10.1016/j.jmpt.2012.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The purposes of this study were to describe the questionnaire development process for evaluating elements of an evidence-based practice (EBP) curriculum in a chiropractic program and to report on initial reliability and validity testing for the EBP knowledge examination component of the questionnaire. METHODS The EBP knowledge test was evaluated with students enrolled in a doctor of chiropractic program in the University of Western States. The initial version was tested with a sample of 374 and a revised version with a sample of 196 students. Item performance and reliability were assessed using item difficulty, item discrimination, and internal consistency. An expert panel assessed face and content validity. RESULTS The first version of the knowledge examination demonstrated a low internal consistency (Kuder-Richardson 20 = 0.55), and a few items had poor item difficulty and discrimination. This resulted in an expansion in the number of items from 20 to 40, as well as a revision of the poorly performing items from the initial version. The Kuder-Richardson 20 of the second version was 0.68; 32 items had item difficulties of between 0.20 and 0.80, and 26 items had item discrimination values of 0.20 or greater. CONCLUSIONS A questionnaire for evaluating a revised EBP-integrated curriculum was developed and evaluated. Psychometric testing of the EBP knowledge component provided some initial evidence for acceptable reliability and validity.
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Affiliation(s)
- Michael C Leo
- Kaiser Permanente Center for Health Research, Portland, OR 97227, USA.
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Peterson D, Bashir B, Chowdhury A, McCurdy B, Rivest R, Nugent Z, Demetor S, Ahmed S, Leylek A, Ahmed N. A Prospective Study Measuring Interobserver Variability of GTV With FDG-PET-CT in Stage III Non-small Cell Lung Cancer Using 3D Analysis. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1547] [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: 11/15/2022]
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Cronin-Hennessy D, Hietala J, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Xiao T, Martin L, Powell A, Wilkinson G, Asner DM, Tatishvili G, Mendez H, Ge JY, Miller DH, Shipsey IPJ, Xin B, Adams GS, Hu D, Moziak B, Napolitano J, Ecklund KM, Insler J, Muramatsu H, Park CS, Pearson LJ, Thorndike EH, Ricciardi S, Thomas C, Artuso M, Blusk S, Mountain R, Skwarnicki T, Stone S, Wang JC, Zhang LM, Bonvicini G, Cinabro D, Lincoln A, Smith MJ, Zhou P, Zhu J, Naik P, Rademacker J, Edwards KW, Randrianarivony K, Briere RA, Vogel H, Onyisi PUE, Rosner JL, Alexander JP, Cassel DG, Das S, Ehrlich R, Gibbons L, Gray SW, Hartill DL, Heltsley BK, Kreinick DL, Kuznetsov VE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Sun WM, Yelton J, Rubin P, Lowrey N, Mehrabyan S, Selen M, Wiss J, Libby J, Kornicer M, Mitchell RE, Shepherd MR, Tarbert CM, Besson D, Pedlar TK. Observation of the Dalitz decayDs*+→Ds+e+e−. Int J Clin Exp Med 2012. [DOI: 10.1103/physrevd.86.072005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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31
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Berryhill M, Peterson D. Grouping Principles in Visual Working Memory. J Vis 2012. [DOI: 10.1167/12.9.294] [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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Haas M, Vavrek D, Peterson D. OA06.04. Dose-response of spinal manipulation for chronic low back pain: pain and disability outcomes from a randomized controlled trial. Altern Ther Health Med 2012. [PMCID: PMC3373330 DOI: 10.1186/1472-6882-12-s1-o24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Vavrek D, Haas M, Peterson D. P02.157. Dose-response of spinal manipulation for low back pain: outside care outcomes from a randomized clinical trial. BMC Complement Altern Med 2012. [PMCID: PMC3373600 DOI: 10.1186/1472-6882-12-s1-p213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hussein A, Morris R, Peterson D, Wilson M. Information Technology at Workplace; Electronic Patients' Records—Uses, Problems and Sociotechnical Factors. J Neurol Surg A Cent Eur Neurosurg 2012. [DOI: 10.1055/s-0032-1316192] [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: 10/28/2022]
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Pedlar TK, Cronin-Hennessy D, Hietala J, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Xiao T, Martin L, Powell A, Wilkinson G, Mendez H, Ge JY, Miller DH, Shipsey IPJ, Xin B, Adams GS, Hu D, Moziak B, Napolitano J, Ecklund KM, Insler J, Muramatsu H, Park CS, Pearson LJ, Thorndike EH, Ricciardi S, Thomas C, Artuso M, Blusk S, Mountain R, Skwarnicki T, Stone S, Zhang LM, Bonvicini G, Cinabro D, Lincoln A, Smith MJ, Zhou P, Zhu J, Naik P, Rademacker J, Asner DM, Edwards KW, Randrianarivony K, Tatishvili G, Briere RA, Vogel H, Onyisi PUE, Rosner JL, Alexander JP, Cassel DG, Das S, Ehrlich R, Gibbons L, Gray SW, Hartill DL, Heltsley BK, Kreinick DL, Kuznetsov VE, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Sun WM, Yelton J, Rubin P, Lowrey N, Mehrabyan S, Selen M, Wiss J, Libby J, Kornicer M, Mitchell RE, Shepherd MR, Tarbert CM, Besson D. Observation of the h(c)(1P) Using e+ e- collisions above the DD threshold. Phys Rev Lett 2011; 107:041803. [PMID: 21866994 DOI: 10.1103/physrevlett.107.041803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Indexed: 05/31/2023]
Abstract
Using 586 pb(-1) of e+ e- collision data at E(c.m.) = 4170 MeV, produced at the Cornell Electron Storage Ring collider and collected with the CLEO-c detector, we observe the process e+ e- → π+ π- h(c)(1P). We measure its cross section to be 15.6±2.3±1.9±3.0 pb, where the third error is due to the external uncertainty on the branching fraction of ψ(2S) → π0 h(c)(1P), which we use for normalization. We also find evidence for e+ e- → ηh(c)(1P) at 4170 MeV at the 3σ level and see hints of a rise in the e+ e- → π+ π- h(c)(1P) cross section at 4260 MeV.
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Affiliation(s)
- T K Pedlar
- Luther College, Decorah, Iowa 52101, USA
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Burman M, Nguyen HL, Murthy V, Gupta PS, Davies C, Wragg A, Peterson D, Chowdhury TA. Severe orthostatic hypotension in a diabetic patient may not be due to diabetic autonomic neuropathy. Clin Med (Lond) 2011; 11:290-1. [PMID: 21902089 PMCID: PMC4953329 DOI: 10.7861/clinmedicine.11-3-290] [Citation(s) in RCA: 2] [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: 12/15/2022]
Abstract
This lesson describes an unusual case of a man who was recently diagnosed with type 1 diabetes and who presented with severe orthostatic hypotension. As his diabetes was recent in onset, well controlled, and he had no other signs of microvascular disease, other causes of orthostatic hypotension were sought. His serum and cerebrospinal fluid were strongly positive for Borrelia burgdorferi IgG, suggesting a diagnosis of Lyme neuroborreliosis. Autonomic instability in Lyme, while rare, has been previously reported.
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Affiliation(s)
- M Burman
- Department of Diabetes and Metabolism
| | | | - V Murthy
- Department of Diabetes and Metabolism
| | | | - C Davies
- Department of Cardiology, The Royal London Hospital, London
| | - A Wragg
- Department of Cardiology, The Royal London Hospital, London
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Savard G, Pardo RC, Baker S, Davids CN, Levand A, Peterson D, Phillips DG, Sun T, Vondrasek R, Zabransky BJ, Zinkann GP. CARIBU: a new facility for the study of neutron-rich isotopes. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/s10751-011-0325-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [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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Stathis P, Konitsiotis S, Tagaris G, Peterson D. Levetiracetam for the management of levodopa-induced dyskinesias in Parkinson's disease. Mov Disord 2010; 26:264-70. [PMID: 21412833 DOI: 10.1002/mds.23355] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 03/10/2010] [Accepted: 06/23/2010] [Indexed: 11/11/2022] Open
Abstract
The efficacy and safety of levetiracetam (LEV), administered for management of levodopa-induced dyskinesias (LID) in Parkinson's disease (PD), was examined using a multicenter, double-blind, placebo-controlled, parallel groups, crossover trial. Because of having a period effect, data after crossover point was excluded from analysis. Levodopa-treated PD participants with LID (n = 38) received LEV 500 mg/day, were assessed, titrated to 1,000 mg/day and reassessed, before and after crossover. The placebo group followed the same routine. Primary efficacy was defined from percent change in "On with LID" time from patient diaries. Secondary efficacy assessment used "On without LID," "Off" time, unified PD rating scale (UPDRS), clinical global impression (CGI), and Goetz dyskinesia scale after levodopa challenge. Safety measures were also performed. On with LID time decreased 37 minutes (95% confidence interval [CI] 0.59, 7.15; P = 0.02) at 500 mg/day, 7.85% 75 minutes (95% CI 3.3, 12.4; P = 0.002) at 1,000 mg/day. On without LID time increased by 46 minutes (95% CI -1.55, -0.03; P = 0.04) at 500 mg/day and 55 minutes (95% CI -10.39, -1.14; P = 0.018) at 1,000 mg/day. UPDRS 32 showed decreased dyskinesia duration mean change 0.35 (95% CI 0.09, 0.5; P = 0.009) at 1,000 mg/day. CGI showed LID decreased by 0.7 (95% CI 0.21, 1.18; P = 0.006) at 1,000 mg/day. Patient diaries and UPDRS show no increase in Off time. This exploratory trial provides evidence that LEV in 1,000 mg/day, slowly titrated, could be useful in improving LID as was assessed with patient diaries, UPDRS, and CGI scales, safely, with minimal side effects.
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Affiliation(s)
- P Stathis
- Department of Neurology, 1st Hospital of Social Security Services, Athens, Greece.
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Layde P, Christiansen A, Guse C, Peterson D. Implementing effective injury interventions in local communities. Inj Prev 2010. [DOI: 10.1136/ip.2010.029215.265] [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: 11/04/2022]
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Abstract
The utilization of glucose, amino acids, fatty acids, bicarbonate, purines, and pyrimidines by the Reiter treponeme was studied by using carbon 14-labeled substrates. The distribution of carbon from the substrates into various cell components was determined. Radioactivity from labeled bicarbonate in the cellular protein was restricted to aspartic acid. The Reiter treponeme is capable of synthesizing glycine, serine, alanine, aspartic acid, glutamic acid, proline, and possibly ornithine. Phenylalanine, arginine, lysine, leucine, isoleucine, valine, threonine, and histidine do not appear to be synthesized by this treponeme. The Reiter treponeme cannot synthesize fatty acids, and thymine is not incorporated. Glucose is a major carbon and energy source. Arginine, histidine, serine, threonine, and glutamic acid are degraded by the Reiter treponeme and may serve as energy sources. It was calculated that exogenously supplied amino acids contribute 41 to 54% of the cellular material; fatty acids, 18%; and glucose, 28 to 43%.
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Affiliation(s)
- S L Allen
- Department of Microbiology, University of Minnesota, Minneapolis, Minnesota 55455
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Vavrek D, Haas M, Peterson D. Physical examination and self-reported pain outcomes from a randomized trial on chronic cervicogenic headache. J Manipulative Physiol Ther 2010; 33:338-48. [PMID: 20605552 PMCID: PMC2917237 DOI: 10.1016/j.jmpt.2010.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2009] [Revised: 11/17/2009] [Accepted: 11/29/2009] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Objective clinical measures for use as surrogate markers of cervicogenic headache (CGH) pain have not been established. In this analysis, we investigate relationships between objective physical examination (PE) measures with self-reported CGH outcomes. METHODS This is an exploratory analysis of data generated by attention control PE from an open-label randomized clinical trial. Of 80 subjects, 40 were randomized to 8 treatments (spinal manipulative therapy or light massage control) and 8 PE over 8 weeks. The remaining subjects received no PE. Physical examination included motion palpation of the cervical and upper thoracic regions, active cervical range of motion (ROM) and associated pain, and algometric pain threshold evaluated over articular pillars. Self-reported outcomes included CGH and neck pain and disability, number of CGH headaches, and related disability days. Associations between PE and self-reported outcomes were evaluated using generalized linear models, adjusting for sociodemographic differences and study group. RESULTS At baseline, number of CGH and disability days were strongly associated with cervical active ROM (P < .001 to .037). Neck pain and disability were strongly associated with ROM-elicited pain (P < .001 to .035) but not later in the study. After the final treatment, pain thresholds were strongly associated with week 12 neck pain and disability and CGH disability and disability days (P < or = .001 to .048). CONCLUSIONS Cervical ROM was most associated with the baseline headache experience. However, 4 weeks after treatment, algometric pain thresholds were most associated. No one PE measure remained associated with the self-reported headache outcomes over time.
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Affiliation(s)
- Darcy Vavrek
- Center for Outcomes Studies, Western States Chiropractic College, 2900 132nd Avenue, Portland, OR 97230-3009, USA.
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Sprauten M, Darrah T, Hannigan R, Beard C, Haugnes H, Cvancarova M, Peterson D, Travis L, Fosså S, Oldenburg J. 603 Long-term accumulation of platinum (Pt) and its impact on self-reported neuro- and ototoxicity in cisplatin-treated testicular cancer survivors (TCSs). EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71404-x] [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] Open
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Abstract
Neurosurgery has traditionally been regarded as a surgical speciality unsuitable for doctors in their first clinical year after graduation with limited prior experience of such patients. However, the advent of UK Modernising Medical Careers' Foundation Year training and the European Working Time Directive mean neurosurgery is now available as a clinical placement for newly qualified doctors. The authors describe the development of such a post, first implemented in August 2008, which both facilitated safe and effective care of neurosurgical patients and enabled the trainee to achieve many of the goals of UK Foundation training. Suggestions are made for the implementation of further similar posts.
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Affiliation(s)
- P J Grover
- Department of Neurosurgery, Charing Cross Hospital, London
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Abstract
In the elderly, cerebellar lesions are commonly metastatic tumours with poor prognosis. We describe two octogenarians who presented with obstructive hydrocephalus, secondary to posterior fossa tumours that, on computed tomography, were thought to be cerebellar metastases. Both lesions were excised and the histology proved them to be cerebellar haemangioblastomas, primary benign tumours of the posterior fossa, which are rare in the elderly.
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Affiliation(s)
- K K Gnanalingham
- Department of Neurosurgery, Charing Cross Hospital, Fulham Palace Road, London, UK.
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46
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Affiliation(s)
- D Pal
- Department of Neurosurgery, Charing Cross Hospital, Fulham Palace Road, London, UK
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Elwell V, Koo Ng N, Dhanjal M, Peterson D. Cerebral cyst formation in pregnancy following gamma knife surgery of an underlying arteriovenous malformation. Br J Neurosurg 2009; 22:808-9. [DOI: 10.1080/02688690802199912] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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48
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Patel BM, Siu S, Clark DA, Peterson D, Stevenson AR, Stitz R. SO08P�COLORECTAL LIVER METASTASIS: OPEN VERSUS LAPAROSCOPIC RESECTION OF METASTATIC COLORECTAL CANCER; IS ONE BETTER THAN THE OTHER? AN RBWH PERSPECTIVE. ANZ J Surg 2009. [DOI: 10.1111/j.1445-2197.2009.04932_8.x] [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: 11/30/2022]
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49
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Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Lang BW, Poling R, Scott AW, Smith A, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tomaradze A, Ernst J, Ecklund KM, Severini H, Love W, Savinov V, Aquines O, Lopez A, Mehrabyan S, Mendez H, Ramirez J, Huang GS, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Anderson M, Cummings JP, Danko I, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Artuso M, Blusk S, Butt J, Li J, Menaa N, Mountain R, Nisar S, Randrianarivony K, Sia R, Skwarnicki T, Stone S, Wang JC, Zhang K, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Asner DM, Edwards KW, Naik P, Briere RA, Ferguson T, Tatishvili G, Vogel H, Watkins ME, Rosner JL, Adam NE, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Galik RS, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Jones CD, Kandaswamy J, Kreinick DL, Kuznetsov VE, Mahlke-Krüger H, Mohapatra D, Onyisi PUE, Patterson JR, Peterson D, Pivarski J, Riley D, Ryd A, Sadoff AJ, Schwarthoff H, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Patel R, Potlia V, Yelton J, Rubin P, Cawlfield C, Eisenstein BI, Karliner I, Kim D, Lowrey N, Selen M, White EJ, Wiss J. Observation of D+ --> etae + nue. Phys Rev Lett 2009; 102:081801. [PMID: 19257732 DOI: 10.1103/physrevlett.102.081801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2008] [Indexed: 05/27/2023]
Abstract
Using a 281 pb-1 data sample collected at the psi(3770) resonance with the CLEO-c detector at the Cornell Electron Storage Ring, we report the first observation of D+ --> etae + nue. We also set upper limits for D+ --> eta'e + nue and D + --> varphie + nue that are about 2 orders of magnitude more restrictive than those obtained by previous experiments.
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Affiliation(s)
- R E Mitchell
- Indiana University, Bloomington, Indiana 47405, USA
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50
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Naik P, Rademacker J, Asner DM, Edwards KW, Reed J, Robichaud AN, Tatishvili G, Briere RA, Vogel H, Onyisi PUE, Rosner JL, Alexander JP, Cassel DG, Duboscq JE, Ehrlich R, Fields L, Galik RS, Gibbons L, Gray R, Gray SW, Hartill DL, Heltsley BK, Hertz D, Hunt JM, Kandaswamy J, Kreinick DL, Kuznetsov VE, Ledoux J, Mahlke-Krüger H, Mohapatra D, Patterson JR, Peterson D, Riley D, Ryd A, Sadoff AJ, Shi X, Stroiney S, Sun WM, Wilksen T, Athar SB, Yelton J, Rubin P, Mehrabyan S, Lowrey N, Selen M, White EJ, Wiss J, Mitchell RE, Shepherd MR, Besson D, Pedlar TK, Cronin-Hennessy D, Gao KY, Hietala J, Kubota Y, Klein T, Poling R, Scott AW, Zweber P, Dobbs S, Metreveli Z, Seth KK, Tan BJY, Tomaradze A, Libby J, Martin L, Powell A, Wilkinson G, Mendez H, Ge JY, Miller DH, Pavlunin V, Sanghi B, Shipsey IPJ, Xin B, Adams GS, Hu D, Moziak B, Napolitano J, He Q, Insler J, Muramatsu H, Park CS, Thorndike EH, Yang F, Artuso M, Blusk S, Khalil S, Li J, Mountain R, Randrianarivony K, Sultana N, Skwarnicki T, Stone S, Wang JC, Zhang LM, Bonvicini G, Cinabro D, Dubrovin M, Lincoln A, Ecklund KM. Observation of eta' decays to pi+pi-pi0 and pi+pi-e+e-. Phys Rev Lett 2009; 102:061801. [PMID: 19257578 DOI: 10.1103/physrevlett.102.061801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2008] [Indexed: 05/27/2023]
Abstract
Using psi(2S)-->pi;{+}pi;{-}J/psi, J/psi-->gammaeta;{'} events acquired with the CLEO-c detector at the CESR e;{+}e;{-} collider, we make the first observations of the decays eta;{'}-->pi;{+}pi;{-}pi;{0} and eta;{'}-->pi;{+}pi;{-}e;{+}e;{-}, measuring absolute branching fractions (37_{-9};{+11}+/-4)x10;{-4} and (25_{-9};{+12}+/-5)x10;{-4}, respectively. For eta;{'}-->pi;{+}pi;{-}pi;{0}, this result probes the mechanism of isospin violation and the roles of pi;{0}/eta/eta;{'}-mixing and final state rescattering in strong decays. We also set upper limits on branching fractions for eta;{'} decays to pi;{+}pi;{-}micro;{+}micro;{-}, 2(pi;{+}pi;{-}), pi;{+}pi;{-}2pi;{0}, 2(pi;{+}pi;{-})pi;{0}, 3(pi;{+}pi;{-}), and invisible final states.
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Affiliation(s)
- P Naik
- University of Bristol, Bristol BS8 1TL, United Kingdom
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