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Dun-Dery F, Xie J, Winston K, Burstein B, Gravel J, Emsley J, Sabhaney V, Zemek R, Berthelot S, Beer D, Kam A, Freire G, Mater A, Porter R, Poonai N, Moffatt A, Dixon A, Salvadori MI, Freedman SB. Post-COVID-19 Condition in Children 6 and 12 Months After Infection. JAMA Netw Open 2023; 6:e2349613. [PMID: 38153737 PMCID: PMC10755606 DOI: 10.1001/jamanetworkopen.2023.49613] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 11/12/2023] [Indexed: 12/29/2023] Open
Abstract
Importance There is a need to understand the long-term outcomes among children infected with SARS-CoV-2. Objective To quantify the prevalence of post-COVID-19 condition (PCC) among children tested for SARS-CoV-2 infection in pediatric emergency departments (EDs). Design, Setting, and Participants Multicenter, prospective cohort study at 14 Canadian tertiary pediatric EDs that are members of the Pediatric Emergency Research Canada network with 90-day, 6-month, and 12-month follow-up. Participants were children younger than 18 years who were tested for SARS-CoV-2 infection between August 2020 and February 2022. Data were analyzed from May to November 2023. Exposure The presence of SARS-CoV-2 infection at or within 14 days of the index ED visit. Main Outcomes and Measures Presence of symptoms and QoL reductions that meet the PCC definition. This includes any symptom with onset within 3 months of infection that is ongoing at the time of follow-up and affects everyday functioning. The outcome was quantified at 6 and 12 months following the index ED visit. Results Among the 5147 children at 6 months (1152 with SARS-CoV-2 positive tests and 3995 with negative tests) and 5563 children at 12 months (1192 with SARS-CoV-2 positive tests and 4371 with negative tests) who had sufficient data regarding the primary outcome to enable PCC classification, the median (IQR) age was 2.0 (0.9-5.0) years, and 2956 of 5563 (53.1%) were male. At 6-month follow-up, symptoms and QoL changes consistent with the PCC definition were present in 6 of 1152 children with positive SARS-CoV-2 tests (0.52%) and 4 of 3995 children with negative SARS-CoV-2 tests (0.10%; absolute risk difference, 0.42%; 95% CI, 0.02% to 0.94%). The PCC definition was met at 12 months by 8 of 1192 children with positive SARS-CoV-2 tests (0.67%) and 7 of 4371 children with negative SARS-CoV-2 tests (0.16%; absolute risk difference, 0.51%; 95% CI, 0.06 to 1.08%). At 12 months, the median (IQR) PedsQL Generic Core Scale scores were 98.4 (90.0-100) among children with positive SARS-CoV-2 tests and 98.8 (91.7-100) among children with negative SARS-CoV-2 tests (difference, -0.3; 95% CI, -1.5 to 0.8; P = .56). Among the 8 children with SARS-CoV-2 positive tests and PCC at 12-month follow-up, children reported respiratory (7 of 8 patients [88%]), systemic (3 of 8 patients [38%]), and neurologic (1 of 8 patients [13%]) symptoms. Conclusions and Relevance In this cohort study of children tested for SARS-CoV-2 infection in Canadian pediatric EDs, although children infected with SARS-CoV-2 reported increased chronic symptoms, few of these children developed PCC, and overall QoL did not differ from children with negative SARS-CoV-2 tests.
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Affiliation(s)
- Frederick Dun-Dery
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Jianling Xie
- Section of Pediatric Emergency Medicine, Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Kathleen Winston
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Brett Burstein
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, Quebec, Canada
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Jocelyn Gravel
- Department of Pediatric Emergency Medicine, Centre Hospitalier Universitaire (CHU) Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada
| | - Jason Emsley
- Department of Emergency Medicine, IWK Children's Health Centre and Queen Elizabeth II Health Sciences Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Vikram Sabhaney
- Departments of Paediatrics and Emergency Medicine, BC Children's Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Roger Zemek
- Department of Pediatrics, University of Ottawa, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
- Department of Emergency Medicine, University of Ottawa, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Simon Berthelot
- Département de médecine de famille et de médecine d'urgence, CHU de Québec-Université Laval, Québec City, Quebec, Canada
| | - Darcy Beer
- Department of Pediatrics and Child Health, The Children's Hospital of Winnipeg, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Canada
| | - April Kam
- Division of Emergency Medicine, Department of Pediatrics, McMaster Children's Hospital, Hamilton, Ontario, Canada
| | - Gabrielle Freire
- Division of Emergency Medicine, Department of Paediatrics, Hospital for Sick Children, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Ahmed Mater
- Section of Pediatric Emergency, Department of Pediatrics, Jim Pattison Children's Hospital, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Robert Porter
- Janeway Children's Health and Rehabilitation Centre, Newfoundland and Labrador Health Services, St John's, Newfoundland and Labrador, Canada
| | - Naveen Poonai
- Department of Paediatrics, Children's Hospital London Health Sciences Centre, Schulich School of Medicine and Dentistry, London, Ontario, Canada
- Department of Internal Medicine, Schulich School of Medicine and Dentistry, London, Ontario, Canada
- Department of Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Anne Moffatt
- Department of Paediatrics, Kingston Health Sciences Centre, Queen's University, Kingston, Ontario, Canada
| | - Andrew Dixon
- Section of Pediatric Emergency Medicine, Departments of Pediatric, Women's and Children's Health Research Institute, University of Alberta, Edmonton, Canada
| | - Marina I Salvadori
- Public Health Agency of Canada, Ottawa, Ontario, Canada
- Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Stephen B Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Departments of Pediatrics and Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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Sumner MW, Xie J, Zemek R, Winston K, Freire G, Burstein B, Kam A, Emsley J, Gravel J, Porter R, Sabhaney V, Mater A, Salvadori MI, Berthelot S, Beer D, Poonai N, Moffatt A, Wright B, Freedman SB. Comparison of Symptoms Associated With SARS-CoV-2 Variants Among Children in Canada. JAMA Netw Open 2023; 6:e232328. [PMID: 36892839 PMCID: PMC9999248 DOI: 10.1001/jamanetworkopen.2023.2328] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/10/2023] Open
Abstract
IMPORTANCE Clinical manifestations of SARS-CoV-2 variants have not been systematically compared in children. OBJECTIVE To compare symptoms, emergency department (ED) chest radiography, treatments, and outcomes among children with different SARS-CoV-2 variants. DESIGN, SETTING, AND PARTICIPANTS This multicenter cohort study was performed at 14 Canadian pediatric EDs. Participants included children and adolescents younger than 18 years (hereinafter referred to as children) tested for SARS-CoV-2 infection in an ED between August 4, 2020, and February 22, 2022, with 14 days of follow-up. EXPOSURE(S) SARS-CoV-2 variants detected on a specimen collected from the nasopharynx, nares, or throat. MAIN OUTCOMES AND MEASURES The primary outcome was presence and number of presenting symptoms. The secondary outcomes were presence of core COVID-19 symptoms, chest radiography findings, treatments, and 14-day outcomes. RESULTS Among 7272 participants presenting to an ED, 1440 (19.8%) had test results positive for SARS-CoV-2 infection. Of these, 801 (55.6%) were boys, with a median age of 2.0 (IQR, 0.6-7.0) years. Children with the Alpha variant reported the fewest core COVID-19 symptoms (195 of 237 [82.3%]), which were most often reported by participants with Omicron variant infection (434 of 468 [92.7%]; difference, 10.5% [95% CI, 5.1%-15.9%]). In a multivariable model with the original type as the referent, the Omicron and Delta variants were associated with fever (odds ratios [ORs], 2.00 [95% CI, 1.43-2.80] and 1.93 [95% CI, 1.33-2.78], respectively) and cough (ORs, 1.42 [95% CI, 1.06-1.91] and 1.57 [95% CI, 1.13-2.17], respectively). Upper respiratory tract symptoms were associated with Delta infection (OR, 1.96 [95% CI, 1.38-2.79]); lower respiratory tract and systemic symptoms were associated with Omicron variant infection (ORs, 1.42 [95% CI, 1.04-1.92] and 1.77 [95% CI, 1.24-2.52], respectively). Children with Omicron infection most often had chest radiography performed and received treatments; compared with those who had Delta infection, they were more likely to have chest radiography performed (difference, 9.7% [95% CI, 4.7%-14.8%]), to receive intravenous fluids (difference, 5.6% [95% CI, 1.0%-10.2%]) and corticosteroids (difference, 7.9% [95% CI, 3.2%-12.7%]), and to have an ED revisit (difference, 8.8% [95% CI, 3.5%-14.1%]). The proportions of children admitted to the hospital and intensive care unit did not differ between variants. CONCLUSIONS AND RELEVANCE The findings of this cohort study of SARS-CoV-2 variants suggest that the Omicron and Delta variants were more strongly associated with fever and cough than the original-type virus and the Alpha variant. Children with Omicron variant infection were more likely to report lower respiratory tract symptoms and systemic manifestations, undergo chest radiography, and receive interventions. No differences were found in undesirable outcomes (ie, hospitalization, intensive care unit admission) across variants.
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Affiliation(s)
- Madeleine W. Sumner
- Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Jianling Xie
- Section of Pediatric Emergency Medicine, Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Roger Zemek
- Department of Pediatrics, University of Ottawa, Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada
- Department of Emergency Medicine, University of Ottawa, Children’s Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Kathleen Winston
- Department of Pediatrics, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Gabrielle Freire
- Division of Emergency Medicine, Department of Paediatrics, Hospital for Sick Children, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Brett Burstein
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Montreal Children’s Hospital, McGill University Health Centre, Montreal, Quebec, Canada
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
| | - April Kam
- Division of Emergency Medicine, Department of Pediatrics, McMaster Children’s Hospital, Hamilton, Ontario, Canada
| | - Jason Emsley
- Department of Emergency Medicine, IWK Children’s Health Centre and Queen Elizabeth II Health Sciences Centre, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jocelyn Gravel
- Department of Pediatric Emergency Medicine, Centre Hospitalier Universitaire (CHU) Sainte-Justine, Université de Montréal, Montreal, Quebec, Canada
| | - Robert Porter
- Janeway Children’s Health and Rehabilitation Centre, Eastern Health, St John’s, Newfoundland and Labrador, Canada
| | - Vikram Sabhaney
- Department of Paediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ahmed Mater
- Section of Pediatric Emergency, Department of Pediatrics, Jim Pattison Children’s Hospital, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Marina I. Salvadori
- Public Health Agency of Canada, Ottawa, Ontario, Canada
- Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Simon Berthelot
- Département de Médecine Familiale et de Médecine d’Urgence, CHU de Québec-Université, Québec City, Quebec, Canada
| | - Darcy Beer
- Department of Pediatrics and Child Health, The Children’s Hospital of Winnipeg, Children’s Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Canada
| | - Naveen Poonai
- Department of Paediatrics, Children’s Hospital London Health Sciences Centre, Schulich School of Medicine & Dentistry, London, Ontario, Canada
- Department of Internal Medicine, Children’s Hospital London Health Sciences Centre, Schulich School of Medicine & Dentistry, London, Ontario, Canada
- Department of Epidemiology & Biostatistics, Children’s Hospital London Health Sciences Centre, Schulich School of Medicine & Dentistry, London, Ontario, Canada
| | - Anne Moffatt
- Department of Paediatrics, Kingston Health Sciences Centre, Queen’s University, Kingston, Ontario, Canada
| | - Bruce Wright
- University of Alberta, Department of Pediatrics, Stollery Children’s Hospital, Edmonton, Alberta, Canada
| | - Stephen B. Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Departments of Pediatrics and Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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Vaughan CG, Ledoux AA, Sady MD, Tang K, Yeates KO, Sangha G, Osmond MH, Freedman SB, Gravel J, Gagnon I, Craig W, Burns E, Boutis K, Beer D, Gioia G, Zemek R. Association Between Early Return to School Following Acute Concussion and Symptom Burden at 2 Weeks Postinjury. JAMA Netw Open 2023; 6:e2251839. [PMID: 36662524 PMCID: PMC9860528 DOI: 10.1001/jamanetworkopen.2022.51839] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/23/2022] [Indexed: 01/21/2023] Open
Abstract
Importance Determining how the timing of return to school is related to later symptom burden is important for early postinjury management recommendations. Objective To examine the typical time to return to school after a concussion and evaluate whether an earlier return to school is associated with symptom burden 14 days postinjury. Design, Setting, and Participants Planned secondary analysis of a prospective, multicenter observational cohort study from August 2013 to September 2014. Participants aged 5 to 18 years with an acute (<48 hours) concussion were recruited from 9 Canadian pediatric emergency departments in the Pediatric Emergency Research Canada Network. Exposure The independent variable was the number of days of school missed. Missing fewer than 3 days after concussion was defined as an early return to school. Main Outcomes and Measures The primary outcome was symptom burden at 14 days, measured with the Post-Concussion Symptom Inventory (PCSI). Symptom burden was defined as symptoms status at 14 days minus preinjury symptoms. Propensity score analyses applying inverse probability of treatment weighting were performed to estimate the relationship between the timing of return to school and symptom burden. Results This cohort study examined data for 1630 children (mean age [SD] 11.8 [3.4]; 624 [38%] female). Of these children, 875 (53.7%) were classified as having an early return to school. The mean (SD) number of days missed increased across age groups (5-7 years, 2.61 [5.2]; 8-12 years, 3.26 [4.9]; 13-18 years, 4.71 [6.1]). An early return to school was associated with a lower symptom burden 14 days postinjury in the 8 to 12-year and 13 to 18-year age groups, but not in the 5 to 7-year age group. The association between early return and lower symptom burden was stronger in individuals with a higher symptom burden at the time of injury, except those aged 5 to 7 years. Conclusions and Relevance In this cohort study of youth aged 5 to 18 years, these results supported the growing belief that prolonged absences from school and other life activities after a concussion may be detrimental to recovery. An early return to school may be associated with a lower symptom burden and, ultimately, faster recovery.
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Affiliation(s)
| | - Andrée-Anne Ledoux
- Children’s Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Maegan D. Sady
- Division of Neuropsychology, Children’s National Hospital, Washington, DC
| | - Ken Tang
- Independent Statistical Consultant, Richmond, British Columbia, Canada
| | - Keith Owen Yeates
- Department of Psychology, Hotchkiss Brain Institute, and Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Gurinder Sangha
- Department of Pediatrics, Children’s Hospital of Western Ontario, Western University, London, Ontario, Canada
| | - Martin H. Osmond
- Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
| | - Stephen B. Freedman
- Department of Pediatrics, Alberta Children’s Hospital, Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Jocelyn Gravel
- Department of Pediatric Emergency Medicine, CHU Sainte-Justine, Université de Montréal, Montréal, Quebec, Canada
| | - Isabelle Gagnon
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Montreal Children’s Hospital, McGill University Health Center, Montreal, Quebec, Canada
- School of Physical and Occupational Therapy, Faculty of Medicine and Health Sciences, McGill University, Montreal, Quebec, Canada
| | - William Craig
- Department of Pediatrics, Stollery Children’s Hospital, Edmonton, Alberta, Canada
| | - Emma Burns
- Department of Emergency Medicine, IWK Health, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Kathy Boutis
- Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Darcy Beer
- Department of Pediatrics, Winnipeg Children’s Hospital, Winnipeg, Manitoba, Canada
| | - Gerard Gioia
- Division of Neuropsychology, Children’s National Hospital, Washington, DC
| | - Roger Zemek
- Children’s Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
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Rahimi A, Ali S, Rajagopal M, Ma K, Yaskina M, Goldman R, Stang A, Beer D, Poonai N, Alqurashi W, Weingarten L, Kam A, Principi T, Curran J, Gardner K, Hartling L, Wright B, Plint A, Gouin S, Schreiner K, Leung J, Scott S. 64 A Canadian multicentre survey of family needs when attending the pediatric emergency department. Paediatr Child Health 2022. [DOI: 10.1093/pch/pxac100.063] [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] [Indexed: 11/07/2022] Open
Abstract
Abstract
Background
Parents/caregivers strongly influence their child’s experience in the pediatric emergency department (PED). Understanding their needs can improve families’ PED experience and care.
Objectives
To describe caregivers’ perceived emotional, practical, and informational needs in the PED and how well these needs were met
Design/Methods
This descriptive, cross-sectional survey with medical record review was conducted at 10 Canadian PEDs from October 2018 to March 2020, over a 1-week period every season, for a total of 4 weeks per site. Digital surveys available in English or French were completed by caregivers in the PED and 7 days after their visit. Health literacy was evaluated by the Newest Vital Sign tool.
Results
A total of 2005 caregivers participated; mean age was 37.8 (SD 7.7) years, and 74.3% (1462/1969) were mothers. The mean child age was 5.9 (5.1) years and 51.9 % (1040/2003) were male. Caregivers’ main spoken language was mostly English [72.6% (1425/1964)] or French [10.5% (206/1964)]. Over half of caregivers had a university/professional degree [51.0% (997/1956)]; 37.4% (746/1998) had possible/probable limited health literacy. 77.9% (1132/1454) of caregivers reported that their overall care needs were met. 71.7% (1081/1507) of caregivers reported that their emotional needs were met; they reported most emotional support by doctors [(35.6%, 535/1510)] and bedside nurses [(24.2%, 364/1507)]. The median (IQR) length of stay was 3.9 (2.6, 6.1) hours; 36.7% (546/1487) of caregivers felt they waited ‘too long’, and 77.8% (1158/1489) did not know how long they would have to wait. 11.7% of families were dissatisfied with the care updates provided. A safe PED was the top overall identified practical need [(45.1%, 602/1336)]. Internet access was the most important practical need throughout the visit [(28.1%, 378/1345)], while more space was the most reported [(49.8%, 696/1398)] need in the waiting room. The most desired improvements in the PED were better communication of wait times and delays [(41.1%, 745/1812)], shorter wait times [(38.8%, 699/1801)] and faster diagnosis [(24.9%, 449/1803)].
Conclusion
Almost one quarter of Canadian caregivers report that their overall needs were not fully met when attending the PED. Safety during the PED visit was of utmost importance. Nationally, caregivers value shorter wait times, rapid diagnosis, and better communication about perceived delays. Top practical needs included internet access and more waiting room space. Creating innovative waiting systems, better methods to share wait time information, free internet access, and improved physical spaces could better address identified caregiver needs in the PED.
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Affiliation(s)
- Asa Rahimi
- Pediatric Resident doctors at the Stollery Children's Hospital
| | | | - Manasi Rajagopal
- Women and Children’s Health Research Institute, University of Alberta
| | | | - Maryna Yaskina
- Women and Children’s Health Research Institute, University of Alberta
| | - Ran Goldman
- University of British Columbia, and BC Children's Hospital Research Institute
| | - Antonia Stang
- Division of Emergency Medicine, Alberta Children's Hospital, University of Calgary
| | | | | | - Waleed Alqurashi
- Division of Emergency Medicine, Children's Hospital of Eastern Ontario, University of Ottawa
| | - Laura Weingarten
- Division of Emergency Medicine, McMaster Children’s Hospital, McMaster University
| | | | - Tania Principi
- Division of Emergency Medicine,Hospital for Sick Children, University of Toronto
| | - Janet Curran
- Division of Emergency Medicine, IWK Health Centre, Dalhousie University
| | - Katie Gardner
- Division of Emergency Medicine, IWK Health Centre, Dalhousie University
| | | | | | - Amy Plint
- Division of Emergency Medicine, Children's Hospital of Eastern Ontario, University of Ottawa
| | | | | | - Julie Leung
- Pediatric Parent Advisory Group, University of Alberta
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Aregbesola A, Florescu O, Tam C, Coyle A, Knisley L, Hogue K, Beer D, Sawyer S, Klassen TP. Evaluation of baseline pediatric readiness of emergency departments in Manitoba, Canada. Int J Emerg Med 2022; 15:58. [PMID: 36217121 PMCID: PMC9549829 DOI: 10.1186/s12245-022-00462-0] [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: 08/16/2022] [Accepted: 10/01/2022] [Indexed: 11/23/2022] Open
Abstract
Background Data on the readiness of the general emergency departments (EDs) in Canada to care for children requiring emergency care are limited. Recent evidence suggests an inverse association between pediatric readiness of the general ED and mortality. Objectives To assess the baseline pediatric readiness of the general EDs in the province of Manitoba, Canada, to care for acutely ill and injured children. Methods This was a cross-sectional survey study conducted between 2019 and 2020. We used a validated pediatric readiness research checklist to obtain information on the six domains of the general EDs in Manitoba in the fiscal year 2019. A general ED that managed acutely ill patients (0–17th birthday), except for psychiatric cases (up to the 18th birthday), was defined as eligible. We performed a descriptive analysis using the weighted pediatric readiness score (WPRS) based on a 100-point scale. The factors associated with the total WPRS were examined in linear regression models. Results Of the 42 eligible general EDs, 34 centers participated with a participation rate of 81%. However, only 27 general EDs plus one specialized children ED (28, 67%) completed the survey. The overall median WPRS (/100) attained by the general EDs was 52.34 (interquartile range [IQR] = 10.44). The only specialized children ED in Manitoba achieved a score of 89.75. Over half (15, 55.6%) of the general EDs scored 50 or more. The mean volume of the general ED that participated was 4010.9 (± SD 2137.2) pediatric general ED visits/year. The average scores attained in the domains such as coordination of patient care, general ED staffing and training, and quality improvement were low across the five Regional Health Authorities. The general ED volume was directly associated with the total WPRS, regression coefficient, β = 0.24 (95% CI 0.04–0.44). Neither the capacity of the general ED to receive pediatric patients from a nursing station, β = − 0.07 (95% CI − 0.28–0.14), nor the capacity to admit pediatric patients that visited the general ED, β = − 0.03 (− 0.23–0.17) was associated with the total WPRS. Conclusions The pediatric readiness of the general EDs across Manitoba is comparable to other Canadian region, yet some domains need to be improved. Supplementary Information The online version contains supplementary material available at 10.1186/s12245-022-00462-0.
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Affiliation(s)
- Alex Aregbesola
- The Children's Hospital Research Institute of Manitoba, John Buhler Research Centre, 513-715 McDermot Avenue, Winnipeg, MB, R3E, 3P4, Canada. .,Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada.
| | - Oana Florescu
- Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Clara Tam
- The Children's Hospital Research Institute of Manitoba, John Buhler Research Centre, 513-715 McDermot Avenue, Winnipeg, MB, R3E, 3P4, Canada
| | - Amanda Coyle
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Lisa Knisley
- The Children's Hospital Research Institute of Manitoba, John Buhler Research Centre, 513-715 McDermot Avenue, Winnipeg, MB, R3E, 3P4, Canada
| | - Kaitlin Hogue
- Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Darcy Beer
- Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Scott Sawyer
- Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Terry P Klassen
- The Children's Hospital Research Institute of Manitoba, John Buhler Research Centre, 513-715 McDermot Avenue, Winnipeg, MB, R3E, 3P4, Canada.,Department of Pediatrics and Child Health, Rady Faculty of Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB, Canada
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6
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Winter F, Beer D, Morawska M, Dorfer C, Roessler K. P07.03.A Advances in Robotic Navigated Laser Craniotomy. An in-vivo non-recovery animal study. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.135] [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] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
We previously described a new frameless stereotactic intervention using robotic guided laser beam for depth electrode placement. This study tested the feasibility of a new cutting strategy for angulated precision bone channels as well as improved cut-through detection using optical coherence tomography (OCT) and a new generation of co-axial live video feed.
Material and Methods
Preoperative CT scans were performed to plan trajectories for bone channels angulated 45, 60, and 90° relative to the surface. The animals were prepared under general anesthesia by a trained veterinarian conforming European requirements and Good Laboratory Practice regulations. A new cutting strategy was implemented consisting of two circular paths and three different ablation phases. After cut-through detection bolts and depth electrodes were inserted. Before termination ad-hoc planned laser craniotomies were performed to evaluate possible cortex damage.
Results
70 robotic guided laser beam precision bone channels were cut in four pig specimens. Bolts and depth electrodes were implanted solely guided by the trajectory given by the laser precision channels. The new cutting strategy showed no irregularities for either cylindrical (n=38, 45°=10, 60°14, 90°=14) or anti-conical (n=33, 45°=11, 60°=13, 90°=9) bone channels. Angulation and hole diameter showed no significant difference between cylindrical and anti-conical cutting strategies. The updated co-axial camera live video feed in addition to OCT reliably detected cut-through in 80% of cases. Insertion of bolts with firm fit was achieved in 94% of bone channels. All four anesthesia protocols showed no irregularities. No unintended damage to the cortex was detected after laser guided craniotomy.
Conclusion
The new cutting strategy showed promising results in 70 precision bone channels for angulated cylindrical and anti-conical channels in a large in-vivo non-recovery animal study. OCT signal and a new co-axial camera proved its feasibility for cut-through detection. Robotic guided laser beam techniques proved its feasibility for the placement of depth electrodes and might be a suitable option to optimize the burr hole for biopsies.
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Affiliation(s)
- F Winter
- Medical University of Vienna , Vienna , Austria
| | - D Beer
- Advanced Osteotomy Tools , Basel , Switzerland
| | - M Morawska
- Advanced Osteotomy Tools , Basel , Switzerland
| | - C Dorfer
- Medical University of Vienna , Vienna , Austria
| | - K Roessler
- Medical University of Vienna , Vienna , Austria
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Lyons TW, Mannix R, Tang K, Yeates KO, Sangha G, Burns EC, Beer D, Dubrovsky AS, Gagnon I, Gravel J, Freedman SB, Craig W, Boutis K, Osmond MH, Gioia G, Zemek R. Paediatric post-concussive symptoms: symptom clusters and clinical phenotypes. Br J Sports Med 2022; 56:785-791. [PMID: 35273038 DOI: 10.1136/bjsports-2021-105193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2022] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To assess the co-occurrence and clustering of post-concussive symptoms in children, and to identify distinct patient phenotypes based on symptom type and severity. METHODS We performed a secondary analysis of the prospective, multicentre Predicting and Preventing Post-concussive Problems in Pediatrics (5P) cohort study, evaluating children 5-17 years of age presenting within 48 hours of an acute concussion. Our primary outcome was the simultaneous occurrence of two or more persistent post-concussive symptoms on the Post-Concussion Symptom Inventory at 28 days post-injury. Analyses of symptom and patient clusters were performed using hierarchical cluster analyses of symptom severity ratings. RESULTS 3063 patients from the parent 5P study were included. Median age was 12.1 years (IQR: 9.2-14.6 years), and 1857 (60.6%) were male. Fatigue was the most common persistent symptom (21.7%), with headache the most commonly reported co-occurring symptom among patients with fatigue (55%; 363/662). Headache was common in children reporting any of the 12 other symptoms (range: 54%-72%). Physical symptoms occurred in two distinct clusters: vestibular-ocular and headache. Emotional and cognitive symptoms occurred together more frequently and with higher severity than physical symptoms. Fatigue was more strongly associated with cognitive and emotional symptoms than physical symptoms. We identified five patient groups (resolved/minimal, mild, moderate, severe and profound) based on symptom type and severity. CONCLUSION Post-concussive symptoms in children occur in distinct clusters, facilitating the identification of distinct patient phenotypes based on symptom type and severity. Care of children post-concussion must be comprehensive, with systems designed to identify and treat distinct post-concussion phenotypes.While I agree with the use of the british spelling of Paediatric throughout, this groups actual name is with the American English Spelling.
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Affiliation(s)
- Todd W Lyons
- Departments of Pediatrics and Emergency Medicine, Harvard Medical School, Boston, Massachusetts, USA .,Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Rebekah Mannix
- Departments of Pediatrics and Emergency Medicine, Harvard Medical School, Boston, Massachusetts, USA.,Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Ken Tang
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Keith Owen Yeates
- Department of Psychology, Hotchkiss Brain Institute, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Gurinder Sangha
- Department of Pediatrics, Children's Hospital of Western Ontario, London, Ontario, Canada.,Department of Pediatrics, Western University Schulich School of Medicine & Dentistry, London, Ontario, Canada
| | - Emma Cm Burns
- Department of Emergency Medicine, IWK Health Centre, Halifax, Nova Scotia, Canada.,Department of Emergency Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Darcy Beer
- Department of Pediatrics, Children's Hospital Foundation of Manitoba, Winnipeg, Manitoba, Canada
| | - Alexander S Dubrovsky
- UP Centre for Pediatric Emergencies, Montreal, Quebec, Canada.,Department of Pediatrics, Montreal Children's Hospital - McGill University Health Centre, Montreal, Quebec, Canada
| | - Isabelle Gagnon
- Division of Physical and Occupational Therapy, McGill University Health Centre, Montreal, Quebec, Canada
| | - Jocelyn Gravel
- Department of Pediatrics, Saint Justine Hospital, Montreal, Quebec, Canada
| | - Stephen B Freedman
- Department of Pediatrics and Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - William Craig
- Department of Pediatrics, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Kathy Boutis
- Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Martin H Osmond
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.,Department of Pediatrics, University of Ottawa, Ottawa, Ontario, Canada
| | - Gerard Gioia
- Division of Neuropsychology, Children's National Hospital, Washington, District of Columbia, USA
| | - Roger Zemek
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.,Department of Pediatrics, University of Ottawa, Ottawa, Ontario, Canada
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8
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Schuh S, Freedman SB, Zemek R, Plint AC, Johnson DW, Ducharme F, Gravel J, Thompson G, Curtis S, Stephens D, Coates AL, Black KJ, Beer D, Sweeney J, Rumantir M, Finkelstein Y. Association Between Intravenous Magnesium Therapy in the Emergency Department and Subsequent Hospitalization Among Pediatric Patients With Refractory Acute Asthma: Secondary Analysis of a Randomized Clinical Trial. JAMA Netw Open 2021; 4:e2117542. [PMID: 34279646 PMCID: PMC8290299 DOI: 10.1001/jamanetworkopen.2021.17542] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
IMPORTANCE Despite guidelines recommending administration of intravenous (IV) magnesium sulfate for refractory pediatric asthma, the number of asthma-related hospitalizations has remained stable, and IV magnesium therapy is independently associated with hospitalization. OBJECTIVE To examine the association between IV magnesium therapy administered in the emergency department (ED) and subsequent hospitalization among pediatric patients with refractory acute asthma after adjustment for patient-level variables. DESIGN, SETTING, AND PARTICIPANTS This post hoc secondary analysis of a double-blind randomized clinical trial of children with acute asthma treated from September 26, 2011, to November 19, 2019, at 7 Canadian tertiary care pediatric EDs was conducted between September and November 2020. In the randomized clinical trial, 816 otherwise healthy children aged 2 to 17 years with Pediatric Respiratory Assessment Measure (PRAM) scores of 5 points or higher after initial therapy with systemic corticosteroids and inhaled albuterol with ipratropium bromide were randomly assigned to 3 nebulized treatments of albuterol plus either magnesium sulfate or 5.5% saline placebo. EXPOSURES Intravenous magnesium sulfate therapy (40-75 mg/kg). MAIN OUTCOMES AND MEASURES The association between IV magnesium therapy in the ED and subsequent hospitalization for asthma was assessed using multivariable logistic regression analysis. Analyses were adjusted for year epoch at enrollment, receipt of IV magnesium, PRAM score after initial therapy and at ED disposition, age, sex, duration of respiratory distress, previous intensive care unit admission for asthma, hospitalizations for asthma within the past year, atopy, and receipt of oral corticosteroids within 48 hours before arrival in the ED, nebulized magnesium, and additional albuterol after inhaled magnesium or placebo, with site as a random effect. RESULTS Among the 816 participants, the median age was 5 years (interquartile range, 3-7 years), 517 (63.4%) were boys, and 364 (44.6%) were hospitalized. A total of 215 children (26.3%) received IV magnesium, and 190 (88.4%) of these children were hospitalized compared with 174 of 601 children (29.0%) who did not receive IV magnesium. Multivariable factors associated with hospitalization were IV magnesium receipt from 2011 to 2016 (odds ratio [OR], 22.67; 95% CI, 6.26-82.06; P < .001) and from 2017 to 2019 (OR, 4.19; 95% CI, 1.99-8.86; P < .001), use of additional albuterol (OR, 5.94; 95% CI, 3.52-10.01; P < .001), and increase in PRAM score at disposition (per 1-U increase: OR, 2.24; 95% CI, 1.89-2.65; P < .001). In children with a disposition PRAM score of 3 or lower, receipt of IV magnesium therapy was associated with hospitalization (OR, 8.52; 95% CI, 2.96-24.41; P < .001). CONCLUSIONS AND RELEVANCE After adjustment for patient-level characteristics, receipt of IV magnesium therapy after initial asthma treatment in the ED was associated with subsequent hospitalization. This association also existed among children with mild asthma at ED disposition. Evidence of a benefit of IV magnesium regarding hospitalization may clarify its use in the treatment of refractory pediatric asthma. TRIAL REGISTRATION ClinicalTrials.gov: NCT01429415.
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Affiliation(s)
- Suzanne Schuh
- Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
- Sick Kids Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Stephen B. Freedman
- Section of Pediatric Emergency Medicine, Department of Pediatrics, Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Section of Gastroenterology, Department of Emergency Medicine, Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Roger Zemek
- Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
- Department of Emergency Medicine, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
- CHEO Research Institute, Ottawa, Ontario, Canada
| | - Amy C. Plint
- Department of Pediatrics, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
- Department of Emergency Medicine, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
- CHEO Research Institute, Ottawa, Ontario, Canada
| | - David W. Johnson
- Department of Pediatrics, Alberta Children’s Hospital, Calgary, Alberta, Canada
- Department of Emergency Medicine, Alberta Children’s Hospital, Calgary, Alberta, Canada
- Department of Physiology & Pharmacology, Alberta Children’s Hospital, Calgary, Alberta, Canada
- Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Francine Ducharme
- Department of Pediatric Emergency Medicine, Centre Hospitalier Universitaire Sainte-Justine, Montréal, Quebec, Canada
- Department of Pediatrics, Université de Montréal, Montréal, Quebec, Canada
- Department of Social and Preventive Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - Jocelyn Gravel
- Department of Pediatric Emergency Medicine, Centre Hospitalier Universitaire Sainte-Justine, Montréal, Quebec, Canada
- Department of Pediatrics, Université de Montréal, Montréal, Quebec, Canada
- Department of Social and Preventive Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - Graham Thompson
- Department of Pediatrics, Alberta Children’s Hospital, University of Calgary, Calgary, Alberta, Canada
- Department of Emergency Medicine, Alberta Children’s Hospital, University of Calgary, Calgary, Alberta, Canada
- Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Sarah Curtis
- Department of Pediatrics, Stollery Children’s Hospital, University of Alberta, Edmonton, Alberta, Canada
- Department of Emergency Medicine, Stollery Children’s Hospital, University of Alberta, Edmonton, Alberta, Canada
| | - Derek Stephens
- Department of Pediatrics, Clinical Research Services, Sick Kids Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Allan L. Coates
- Division of Respiratory Medicine, Sick Kids Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Karen J. Black
- Division of Pediatric Emergency Medicine, British Columbia Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Darcy Beer
- Department of Pediatrics and Child Health, Division of Pediatric Emergency Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
- Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Judy Sweeney
- Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Maggie Rumantir
- Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Yaron Finkelstein
- Sick Kids Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
- Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
- Division of Clinical Pharmacology and Toxicology, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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9
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McKee RS, Schnadower D, Tarr PI, Xie J, Finkelstein Y, Desai N, Lane RD, Bergmann KR, Kaplan RL, Hariharan S, Cruz AT, Cohen DM, Dixon A, Ramgopal S, Rominger A, Powell EC, Kilgar J, Michelson KA, Beer D, Bitzan M, Pruitt CM, Yen K, Meckler GD, Plint AC, Bradin S, Abramo TJ, Gouin S, Kam AJ, Schuh A, Balamuth F, Hunley TE, Kanegaye JT, Jones NE, Avva U, Porter R, Fein DM, Louie JP, Freedman SB. Predicting Hemolytic Uremic Syndrome and Renal Replacement Therapy in Shiga Toxin-producing Escherichia coli-infected Children. Clin Infect Dis 2021; 70:1643-1651. [PMID: 31125419 DOI: 10.1093/cid/ciz432] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 05/23/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Shiga toxin-producing Escherichia coli (STEC) infections are leading causes of pediatric acute renal failure. Identifying hemolytic uremic syndrome (HUS) risk factors is needed to guide care. METHODS We conducted a multicenter, historical cohort study to identify features associated with development of HUS (primary outcome) and need for renal replacement therapy (RRT) (secondary outcome) in STEC-infected children without HUS at initial presentation. Children aged <18 years who submitted STEC-positive specimens between January 2011 and December 2015 at a participating study institution were eligible. RESULTS Of 927 STEC-infected children, 41 (4.4%) had HUS at presentation; of the remaining 886, 126 (14.2%) developed HUS. Predictors (all shown as odds ratio [OR] with 95% confidence interval [CI]) of HUS included younger age (0.77 [.69-.85] per year), leukocyte count ≥13.0 × 103/μL (2.54 [1.42-4.54]), higher hematocrit (1.83 [1.21-2.77] per 5% increase) and serum creatinine (10.82 [1.49-78.69] per 1 mg/dL increase), platelet count <250 × 103/μL (1.92 [1.02-3.60]), lower serum sodium (1.12 [1.02-1.23 per 1 mmol/L decrease), and intravenous fluid administration initiated ≥4 days following diarrhea onset (2.50 [1.14-5.46]). A longer interval from diarrhea onset to index visit was associated with reduced HUS risk (OR, 0.70 [95% CI, .54-.90]). RRT predictors (all shown as OR [95% CI]) included female sex (2.27 [1.14-4.50]), younger age (0.83 [.74-.92] per year), lower serum sodium (1.15 [1.04-1.27] per mmol/L decrease), higher leukocyte count ≥13.0 × 103/μL (2.35 [1.17-4.72]) and creatinine (7.75 [1.20-50.16] per 1 mg/dL increase) concentrations, and initial intravenous fluid administration ≥4 days following diarrhea onset (2.71 [1.18-6.21]). CONCLUSIONS The complex nature of STEC infection renders predicting its course a challenge. Risk factors we identified highlight the importance of avoiding dehydration and performing close clinical and laboratory monitoring.
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Affiliation(s)
- Ryan S McKee
- Section of Pediatric Emergency Medicine, Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City
| | - David Schnadower
- Division of Emergency Medicine, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Ohio
| | - Phillip I Tarr
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Washington University School of Medicine, St Louis, Missouri
| | - Jianling Xie
- Section of Pediatric Emergency Medicine, Department of Pediatrics, Alberta Children's Hospital, Cumming School of Medicine, University of Calgary
| | - Yaron Finkelstein
- Divisions of Emergency Medicine, and Clinical Pharmacology and Toxicology, Hospital for Sick Children, University of Toronto, Ontario
| | - Neil Desai
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Roni D Lane
- Division of Pediatric Emergency Medicine, University of Utah School of Medicine, Salt Lake City
| | - Kelly R Bergmann
- Department of Emergency Medicine, Children's Minnesota, Minneapolis
| | - Ron L Kaplan
- Department of Pediatrics, Division of Emergency Medicine, University of Washington School of Medicine, Seattle Children's Hospital
| | - Selena Hariharan
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Washington University School of Medicine, St Louis, Missouri
| | - Andrea T Cruz
- Sections of Pediatric Emergency Medicine and Pediatric Infectious Diseases, Baylor College of Medicine, Houston, Texas
| | - Daniel M Cohen
- Division of Emergency Medicine, Nationwide Children's Hospital and Ohio State University, Columbus
| | - Andrew Dixon
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Stollery Children's Hospital, Women and Children's Research Institute, University of Alberta, Edmonton, Canada
| | - Sriram Ramgopal
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Pittsburgh School of Medicine Children's Hospital, Pennsylvania
| | - Annie Rominger
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Louisville, Kentucky
| | - Elizabeth C Powell
- Division of Emergency Medicine, Ann and Robert H. Lurie Children's Hospital, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Jennifer Kilgar
- Department of Pediatrics and Division of Emergency Medicine, Children's Hospital, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | | | - Darcy Beer
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Max Rady College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Martin Bitzan
- Division of Nephrology, Department of Pediatrics, McGill University Health Centre, Montreal, Québec, Canada
| | - Christopher M Pruitt
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Alabama at Birmingham
| | - Kenneth Yen
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Texas Southwestern, Children's Health, Dallas
| | - Garth D Meckler
- Division of Pediatric Emergency Medicine, Departments of Pediatrics and Emergency Medicine, University of British Columbia, Vancouver
| | - Amy C Plint
- Division of Pediatric Emergency Medicine, Department of Pediatrics, University of Ottawa, Ontario, Canada
| | - Stuart Bradin
- Departments of Pediatrics and Emergency Medicine, University of Michigan Health System, Ann Arbor
| | - Thomas J Abramo
- Departments of Pediatrics and Emergency Medicine, University of Arkansas School of Medicine, Arkansas Children's Hospital Research Institute, Little Rock
| | - Serge Gouin
- Departments of Pediatric Emergency Medicine and Pediatrics, Université de Montréal, Québec
| | - April J Kam
- Division of Pediatric Emergency Medicine, Department of Pediatrics, McMaster Children's Hospital, McMaster University, Hamilton, Ontario, Canada
| | - Abigail Schuh
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Medical College of Wisconsin, Milwaukee
| | - Fran Balamuth
- University of Pennsylvania Perelman School of Medicine, Children's Hospital of Philadelphia
| | - Tracy E Hunley
- Division of Pediatric Nephrology, Monroe Carell Jr Children's Hospital at Vanderbilt, Nashville, Tennessee
| | - John T Kanegaye
- Department of Pediatrics, University of California, San Diego School of Medicine, La Jolla.,Rady Children's Hospital San Diego, California
| | - Nicholas E Jones
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Emory University, Children's Healthcare of Atlanta, Georgia
| | - Usha Avva
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Hackensack Meridian School of Medicine at Seton Hall, Joseph M. Sanzari Children's Hospital, New Jersey
| | - Robert Porter
- Discipline of Pediatrics, Faculty of Medicine, Memorial University of Newfoundland, St John's, Newfoundland and Labrador, Canada
| | - Daniel M Fein
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York
| | - Jeffrey P Louie
- Department of Pediatrics, Division of Emergency Medicine, University of Minnesota, Masonic Children's Hospital, Minneapolis
| | - Stephen B Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Department of Pediatrics, Alberta Children's Hospital and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Alberta, Canada
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van Ierssel J, Ledoux AA, Tang K, Correll R, Yeates KO, Gioia G, Freedman SB, Sangha G, Boutis K, Beer D, Craig W, Burns E, Mikrogianakis A, Dubrovsky AS, Gagnon I, Gravel J, McGahern C, Osmond MH, Zemek R. Symptom Burden, School Function, and Physical Activity One Year Following Pediatric Concussion. J Pediatr 2021; 228:190-198.e3. [PMID: 32858032 DOI: 10.1016/j.jpeds.2020.08.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/20/2020] [Accepted: 08/21/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVES To characterize symptom burden, school function, and physical activity in youth 1 year following acute concussion and those with subsequent repeat concussion. STUDY DESIGN Secondary analysis of Predicting Persistent Postconcussive Problems in Pediatrics prospective, multicenter cohort study conducted in 9 Canadian emergency departments. Participants were children between ages 5 and 18 years who presented consecutively ≤48 hours of concussion and agreed to participate in a post hoc electronic survey 1 year after injury. Outcomes were assessed using a standardized 25-question symptom scale derived from the Post-Concussion Symptom Inventory-Parent; school function and physical activity outcomes were queried. The primary outcome was total symptom score 1 year following concussion, defined as the number of symptoms experienced more than before injury. RESULTS Of 3052 youth enrolled in the Predicting Persistent Postconcussive Problems in Pediatrics study, 432 (median [IQR] age, 11.5 [9,14] years; 266 [62%] male) completed the 1-year survey; 34 respondents reported a repeat concussion. Following acute concussion, youth were more likely to be symptom-free than following repeat concussion (75% vs 50%; difference = 25% [95% CI 8-41]; P = .002) and to have recovered fully (90% vs 74%; difference = 17% [95% CI 5-34]; P = .002) after 1 year. Although physical symptoms were less 1 year after initial emergency department presentation for both groups (P < .001), youth with a repeat concussion reported greater headache persistence (26% vs 13%; difference = 13% [95% CI 1,31]; P = .024). Both groups returned to their normal school routine (100% vs 95%; difference = 5% [95% CI -5 to 8; P = .618). Youth without repeat concussion more frequently returned to normal physical activities (98% vs 85%; difference = 13% [95% CI 4-28]; P < .0001) and sport (95% vs 82%; difference = 13% [95% CI 3-29]; P = .009). CONCLUSIONS Most youth are symptom-free and fully recovered 1 year following concussion. Some children with repeat concussion have worse outcomes and have delays in returning to normal school routines and sport.
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Affiliation(s)
| | - Andrée-Anne Ledoux
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Ken Tang
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Rhonda Correll
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Keith Owen Yeates
- Department of Psychology, University of Calgary, Calgary, Canada; Alberta Children's Hospital Research Institute, Calgary, Canada
| | - Gerald Gioia
- Children's National Health System, George Washington University School of Medicine, Rockville, MD
| | - Stephen B Freedman
- Alberta Children's Hospital Research Institute, Calgary, Canada; Department of Paediatrics, Alberta Children's Hospital, Calgary, Canada
| | | | - Kathy Boutis
- Department of Pediatrics, Hospital for Sick Children, Toronto, Canada
| | - Darcy Beer
- Department of Pediatrics, Winnipeg Children's Hospital, Winnipeg, Canada
| | - William Craig
- Department of Pediatrics, Stollery Children's Hospital, Edmonton, Canada
| | - Emma Burns
- Department of Pediatrics, IWK Health Sciences Centre, Halifax, Canada
| | - Angelo Mikrogianakis
- Department of Pediatrics, McMaster University, Hamilton, Canada; Department of Pediatrics, McMaster Children's Hospital & St Joseph's Healthcare, Hamilton, Canada
| | - Alexander S Dubrovsky
- Department of Pediatrics, Montreal Children's Hospital, Montreal, Canada; Department of Pediatrics, McGill University, Montreal, Canada
| | - Isabelle Gagnon
- Department of Pediatrics, Montreal Children's Hospital, Montreal, Canada; School of Physical and Occupational Therapy, McGill University, Montreal, Canada
| | - Jocelyn Gravel
- Department of Pediatrics, Hôpital Ste. Justine, Montreal, Canada
| | - Candice McGahern
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Martin H Osmond
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Roger Zemek
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada
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Poonai N, Coriolano K, Klassen T, Heath A, Yaskina M, Beer D, Sawyer S, Bhatt M, Kam A, Doan Q, Sabhaney V, Offringa M, Pechlivanoglou P, Hickes S, Ali S. Adaptive randomised controlled non-inferiority multicentre trial (the Ketodex Trial) on intranasal dexmedetomidine plus ketamine for procedural sedation in children: study protocol. BMJ Open 2020; 10:e041319. [PMID: 33303457 PMCID: PMC7733175 DOI: 10.1136/bmjopen-2020-041319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Up to 40% of orthopaedic injuries in children require a closed reduction, almost always necessitating procedural sedation. Intravenous ketamine is the most commonly used sedative agent. However, intravenous insertion is painful and can be technically difficult in children. We hypothesise that a combination of intranasal dexmedetomidine plus intranasal ketamine (Ketodex) will be non-inferior to intravenous ketamine for effective sedation in children undergoing a closed reduction. METHODS AND ANALYSIS This is a six-centre, four-arm, adaptive, randomised, blinded, controlled, non-inferiority trial. We will include children 4-17 years with a simple upper limb fracture or dislocation that requires sedation for a closed reduction. Participants will be randomised to receive either intranasal Ketodex (one of three dexmedetomidine and ketamine combinations) or intravenous ketamine. The primary outcome is adequate sedation as measured using the Paediatric Sedation State Scale. Secondary outcomes include length of stay, time to wakening and adverse effects. The results of both per protocol and intention-to-treat analyses will be reported for the primary outcome. All inferential analyses will be undertaken using a response-adaptive Bayesian design. Logistic regression will be used to model the dose-response relationship for the combinations of intranasal Ketodex. Using the Average Length Criterion for Bayesian sample size estimation, a survey-informed non-inferiority margin of 17.8% and priors from historical data, a sample size of 410 participants will be required. Simulations estimate a type II error rate of 0.08 and a type I error rate of 0.047. ETHICS AND DISSEMINATION Ethics approval was obtained from Clinical Trials Ontario for London Health Sciences Centre and McMaster Research Ethics Board. Other sites have yet to receive approval from their institutions. Informed consent will be obtained from guardians of all participants in addition to assent from participants. Study data will be submitted for publication regardless of results. TRIAL REGISTRATION NUMBER NCT0419525.
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Affiliation(s)
- Naveen Poonai
- Departments of Paediatrics and Epidemiology & Biostatistics, Schulich School of Medicine and Dentistry, London, Ontario, Canada
- Children's Health Research Institute, London Health Sciences Centre, London, Ontario, Canada
| | - Kamary Coriolano
- Departments of Paediatrics and Epidemiology & Biostatistics, Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Terry Klassen
- Max Rady College of Medicine, Pediatrics and Child Health, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Paediatrics, Children's Hospital Research Institute of Manitoba (CHRIM), Winnipeg, Manitoba, Canada
| | - Anna Heath
- Department of Paediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Paediatrics, University of Toronto, Toronto, Ontario, Canada
- Department of Statistical Science, University College London, London, UK
| | - Maryna Yaskina
- Women and Children's Health Research Institute (WCHRI), University of Alberta, Edmonton, Alberta, Canada
| | - Darcy Beer
- Department of Paediatrics, Children's Hospital of Winnipeg, Winnipeg, Manitoba, Canada
| | - Scott Sawyer
- Department of Paediatrics, Children's Hospital of Winnipeg, Winnipeg, Manitoba, Canada
| | - Maala Bhatt
- Department of Paediatrics, University of Ottawa, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - April Kam
- Department of Paediatrics, McMaster University, McMaster Children's Hospital, Hamilton, Ontario, Canada
| | - Quynh Doan
- Department of Paediatrics, University of British Columbia, BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Vikram Sabhaney
- Department of Paediatrics, University of British Columbia, BC Children's Hospital, Vancouver, British Columbia, Canada
| | - Martin Offringa
- Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada
| | | | - Serena Hickes
- Department of Paediatrics, Children's Hospital Research Institute of Manitoba (CHRIM), Winnipeg, Manitoba, Canada
| | - Samina Ali
- Women and Children's Health Research Institute (WCHRI), University of Alberta, Edmonton, Alberta, Canada
- Department of Pediatrics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
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Schuh S, Sweeney J, Rumantir M, Coates AL, Willan AR, Stephens D, Atenafu EG, Finkelstein Y, Thompson G, Zemek R, Plint AC, Gravel J, Ducharme FM, Johnson DW, Black K, Curtis S, Beer D, Klassen TP, Nicksy D, Freedman SB. Effect of Nebulized Magnesium vs Placebo Added to Albuterol on Hospitalization Among Children With Refractory Acute Asthma Treated in the Emergency Department: A Randomized Clinical Trial. JAMA 2020; 324:2038-2047. [PMID: 33231663 PMCID: PMC7686869 DOI: 10.1001/jama.2020.19839] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 12/31/2022]
Abstract
IMPORTANCE While intravenous magnesium decreases hospitalizations in refractory pediatric acute asthma, it is variably used because of invasiveness and safety concerns. The benefit of nebulized magnesium to prevent hospitalization is unknown. OBJECTIVE To evaluate the effectiveness of nebulized magnesium in children with acute asthma remaining in moderate or severe respiratory distress after initial therapy. DESIGN, SETTING, AND PARTICIPANTS A randomized double-blind parallel-group clinical trial from September 26, 2011, to November 19, 2019, in 7 tertiary-care pediatric emergency departments in Canada. The participants were otherwise healthy children aged 2 to 17 years with moderate to severe asthma defined by a Pediatric Respiratory Assessment Measure (PRAM) score of 5 or greater (on a 12-point scale) after a 1-hour treatment with an oral corticosteroid and 3 inhaled albuterol and ipratropium treatments. Of 5846 screened patients, 4332 were excluded for criteria, 273 declined participation, 423 otherwise excluded, 818 randomized, and 816 analyzed. INTERVENTIONS Participants were randomized to 3 nebulized albuterol treatments with either magnesium sulfate (n = 410) or 5.5% saline placebo (n = 408). MAIN OUTCOMES AND MEASURES The primary outcome was hospitalization for asthma within 24 hours. Secondary outcomes included PRAM score; respiratory rate; oxygen saturation at 60, 120, 180, and 240 minutes; blood pressure at 20, 40, 60, 120, 180, and 240 minutes; and albuterol treatments within 240 minutes. RESULTS Among 818 randomized patients (median age, 5 years; 63% males), 816 completed the trial (409 received magnesium; 407, placebo). A total of 178 of the 409 children who received magnesium (43.5%) were hospitalized vs 194 of the 407 who received placebo (47.7%) (difference, -4.2%; absolute risk difference 95% [exact] CI, -11% to 2.8%]; P = .26). There were no significant between-group differences in changes from baseline to 240 minutes in PRAM score (difference of changes, 0.14 points [95% CI, -0.23 to 0.50]; P = .46); respiratory rate (0.17 breaths/min [95% CI, -1.32 to 1.67]; P = .82); oxygen saturation (-0.04% [95% CI, -0.53% to 0.46%]; P = .88); systolic blood pressure (0.78 mm Hg [95% CI, -1.48 to 3.03]; P = .50); or mean number of additional albuterol treatments (magnesium: 1.49, placebo: 1.59; risk ratio, 0.94 [95% CI, 0.79 to 1.11]; P = .47). Nausea/vomiting or sore throat/nose occurred in 17 of the 409 children who received magnesium (4%) and 5 of the 407 who received placebo (1%). CONCLUSIONS AND RELEVANCE Among children with refractory acute asthma in the emergency department, nebulized magnesium with albuterol, compared with placebo with albuterol, did not significantly decrease the hospitalization rate for asthma within 24 hours. The findings do not support use of nebulized magnesium with albuterol among children with refractory acute asthma. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01429415.
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Affiliation(s)
- Suzanne Schuh
- Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
- Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Judy Sweeney
- Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Maggie Rumantir
- Division of Pediatric Emergency Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Allan L. Coates
- Division of Respiratory Medicine, Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Andrew R. Willan
- Ontario Child Health Support Unit, SickKids Research Institute, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Derek Stephens
- Research Institute, Clinical Research Services, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Eshetu G. Atenafu
- Department of Biostatistics, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada
| | - Yaron Finkelstein
- Research Institute, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
- Divisions of Pediatric Emergency Medicine and Clinical Pharmacology and Toxicology, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Graham Thompson
- Departments of Pediatrics and Emergency Medicine, Alberta Children’s Hospital, University of Calgary, Calgary, Alberta, Canada
- Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Roger Zemek
- Department of Pediatrics and Emergency Medicine, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
- CHEO Research Institute, Ottawa, Ontario, Canada
| | - Amy C. Plint
- Department of Pediatrics and Emergency Medicine, Children’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
- CHEO Research Institute, Ottawa, Ontario, Canada
| | - Jocelyn Gravel
- Department of Pediatric Emergency Medicine, CHU Sainte-Justine, Montréal, Quebec, Canada
- Department of Pediatrics and of Social and Preventive Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - Francine M. Ducharme
- Department of Pediatric Emergency Medicine, CHU Sainte-Justine, Montréal, Quebec, Canada
- Department of Pediatrics and of Social and Preventive Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - David W. Johnson
- Departments of Pediatrics, Emergency Medicine, and Physiology & Pharmacology, Alberta Children’s Hospital, Calgary, Alberta, Canada
- Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Karen Black
- Division of Pediatric Emergency Medicine, British Columbia Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Sarah Curtis
- Departments of Pediatrics and Emergency Medicine, Stollery Children’s Hospital, University of Alberta, Edmonton, Alberta, Canada
| | - Darcy Beer
- Pediatrics/Pediatric Emergency Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
- Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Terry P. Klassen
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada
- Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Darcy Nicksy
- Pharmacy Department, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Stephen B. Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Departments of Pediatrics and Emergency Medicine, Alberta Children’s Hospital, Alberta Children’s Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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13
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Heath A, Rios JD, Williamson-Urquhart S, Pechlivanoglou P, Offringa M, McCabe C, Hopkin G, Plint AC, Dixon A, Beer D, Gouin S, Joubert G, Klassen TP, Freedman SB. A pragmatic randomized controlled trial of multi-dose oral ondansetron for pediatric gastroenteritis (the DOSE-AGE study): statistical analysis plan. Trials 2020; 21:735. [PMID: 32838813 PMCID: PMC7445935 DOI: 10.1186/s13063-020-04651-1] [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: 03/09/2020] [Accepted: 08/04/2020] [Indexed: 11/23/2022] Open
Abstract
Background Acute gastroenteritis is a leading cause of emergency department visits and hospitalizations among children in North America. Oral-rehydration therapy is recommended for children with mild-to-moderate dehydration, but children who present with vomiting are frequently offered intravenous rehydration in the emergency department (ED). Recent studies have demonstrated that the anti-emetic ondansetron can reduce vomiting, intravenous rehydration, and hospitalization when administered in the ED to children with dehydration. However, there is little evidence of additional benefit from prescribing ondansetron beyond the initial ED dose. Moreover, repeat dosing may increase the frequency of diarrhea. Despite the lack of evidence and potential adverse side effects, many physicians across North America provide multiple doses of ondansetron to be taken following ED disposition. Thus, the Multi-Dose Oral Ondansetron for Pediatric Gastroenteritis (DOSE-AGE) trial will evaluate the effectiveness of prescribing multiple doses of ondansetron to treat acute gastroenteritis-associated vomiting. This article specifies the statistical analysis plan (SAP) for the DOSE-AGE trial and was submitted before the outcomes of the study were available for analysis. Methods/design The DOSE-AGE study is a phase III, 6-center, placebo-controlled, double-blind, parallel design randomized controlled trial designed to determine whether participants who are prescribed multiple doses of oral ondansetron to administer, as needed, following their ED visit have a lower incidence of experiencing moderate-to-severe gastroenteritis, as measured by the Modified Vesikari Scale score, compared with a placebo. To assess safety, the DOSE-AGE trial will investigate the frequency and maximum number of diarrheal episodes following ED disposition, and the occurrence of palpitations, pre-syncope/syncope, chest pain, arrhythmias, and serious adverse events. For the secondary outcomes, the DOSE-AGE trial will investigate the individual elements of the Modified Vesikari Scale score and caregiver satisfaction with the therapy. Discussion The DOSE-AGE trial will provide evidence on the effectiveness of multiple doses of oral ondansetron, taken as needed, following an initial ED dose in children with acute gastroenteritis-associated vomiting. The data from the DOSE-AGE trial will be analyzed using this SAP. This will reduce the risk of producing data-driven results and bias in our reported outcomes. The DOSE-AGE study was registered on ClinicalTrials.gov on February 22, 2019. Trial registration ClinicalTrials.gov NCT03851835. Registered on 22 February 2019.
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Affiliation(s)
- Anna Heath
- University of Toronto, Toronto, Ontario, Canada. .,University College London, London, United Kingdom. .,Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada.
| | - Juan David Rios
- Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Sarah Williamson-Urquhart
- Pediatric Emergency Research Team, Alberta Children's Hospital, University of Calgary, Calgary, Alberta, Canada
| | - Petros Pechlivanoglou
- Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada.,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Martin Offringa
- Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada.,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.,Division of Neonatology, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | | | - Gareth Hopkin
- Institute of Health Economics, Edmonton, Alberta, Canada
| | - Amy C Plint
- Division of Emergency Medicine, Children's Hospital of Eastern Ontario, Ottawa, Canada.,University of Ottawa, Ottawa, Canada.,Children's Hospital Research Institute, Ottawa, Canada
| | - Andrew Dixon
- Stollery Children's Hospital, University of Alberta, Women's and Children's Health Research Institute, Edmonton, Canada
| | - Darcy Beer
- Pediatrics/Pediatric Emergency Medicine, Department of Pediatrics and Child Health, Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Serge Gouin
- Université de Montréal, Montréal, Québec, Canada.,CHU Sainte-Justine, Montréal, Québec, Canada
| | - Gary Joubert
- Children's Hospital, Western University, London, Ontario, Canada
| | - Terry P Klassen
- University of Manitoba, Winnipeg, Manitoba, Canada.,Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Stephen B Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Department of Pediatrics, Alberta Children's Hospital, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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14
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Freedman SB, Williamson-Urquhart S, Heath A, Pechlivanoglou P, Hopkin G, Gouin S, Plint AC, Dixon A, Beer D, Joubert G, McCabe C, Finkelstein Y, Klassen TP. Multi-dose Oral Ondansetron for Pediatric Gastroenteritis: study Protocol for the multi-DOSE oral ondansetron for pediatric Acute GastroEnteritis (DOSE-AGE) pragmatic randomized controlled trial. Trials 2020; 21:435. [PMID: 32460879 PMCID: PMC7251709 DOI: 10.1186/s13063-020-04347-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 04/24/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND There are limited treatment options that clinicians can provide to children presenting to emergency departments with vomiting secondary to acute gastroenteritis. Based on evidence of effectiveness and safety, clinicians now routinely administer ondansetron in the emergency department to promote oral rehydration therapy success. However, clinicians are also increasingly providing multiple doses of ondansetron for home use, creating unquantified cost and health system resource use implications without any evidence to support this expanding practice. METHODS/DESIGN DOSE-AGE is a randomized, placebo-controlled, double-blinded, six-center, pragmatic clinical trial being conducted in six Canadian pediatric emergency departments (EDs). In September 2019 the study began recruiting children aged 6 months to 18 years with a minimum of three episodes of vomiting in the 24 h preceding enrollment, <72 h of gastroenteritis symptoms and who were administered a dose of ondansetron during their ED visit. We are recruiting 1030 children (1:1 allocation via an internet-based, third-party, randomization service) to receive a 48-h supply (i.e., six doses) of ondansetron oral solution or placebo, administered on an as-needed basis. All participants, caregivers and outcome assessors will be blinded to group assignment. Outcome data will be collected by surveys administered to caregivers 24, 48 and 168 h following enrollment. The primary outcome is the development of moderate-to-severe gastroenteritis in the 7 days following the ED visit as measured by a validated clinical score (the Modified Vesikari Scale). Secondary outcomes include duration and frequency of vomiting and diarrhea, proportions of children experiencing unscheduled health care visits and intravenous rehydration, caregiver satisfaction with treatment and safety. A preplanned economic evaluation will be conducted alongside the trial. DISCUSSION Definitive data are lacking to guide the clinical use of post-ED visit multidose ondansetron in children with acute gastroenteritis. Usage is increasing, despite the absence of supportive evidence. The incumbent additional costs associated with use, and potential side effects such as diarrhea and repeat visits, create an urgent need to evaluate the effect and safety of multiple doses of ondansetron in children focusing on post-emergency department visit and patient-centered outcomes. TRIAL REGISTRATION ClinicalTrials.gov: NCT03851835. Registered on 22 February 2019.
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Affiliation(s)
- Stephen B Freedman
- Sections of Pediatric Emergency Medicine and Gastroenterology, Departments of Pediatrics and Emergency Medicine, Alberta Children's Hospital, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
| | | | - Anna Heath
- The Hospital for Sick Children, Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Department of Statistical Science, University College London, London, UK
| | - Petros Pechlivanoglou
- The Hospital for Sick Children, Institute for Health Policy Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | | | - Serge Gouin
- Departments of Pediatric Emergency Medicine and Pediatrics, CHU Sainte-Justine, Université de Montréal, Montreal, QC, Canada
| | - Amy C Plint
- Children's Hospital of Eastern Ontario, Departments of Pediatric and Emergency Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Andrew Dixon
- Stollery Children's Hospital, Department of Pediatrics, University of Alberta, Women and Children's Health Research Institute, Edmonton, AB, Canada
| | - Darcy Beer
- Max Rady College of Medicine, Pediatrics and Child Health, Rady Faculty of Health Sciences, University of Manitoba, and the Children's Hospital Research Institute of Manitoba, Winnipeg, MB, Canada
| | - Gary Joubert
- Division of Paediatric Emergency Medicine, Department of Paediatrics, Children's Hospital LHSC, Western University, London, ON, Canada
| | - Christopher McCabe
- Institute of Health Economics and the Department of Emergency Medicine, University of Alberta, Edmonton, AB, Canada
| | - Yaron Finkelstein
- Divisions of Emergency Medicine and Clinical Pharmacology and Toxicology, Department of Paediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Terry P Klassen
- Max Rady College of Medicine, Pediatrics and Child Health, Rady Faculty of Health Sciences, University of Manitoba, and the Children's Hospital Research Institute of Manitoba, Winnipeg, MB, Canada
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15
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Gravel J, Ledoux AA, Tang K, Yeates KO, Craig W, Osmond M, Boutis K, Burns E, Sangha G, Dubrovsky AS, Beer D, Zemek R. Early versus delayed emergency department presentation following mild Traumatic Brain Injury and the presence of symptom at 1, 4 and 12 weeks in children. Emerg Med J 2020; 37:338-343. [PMID: 32139516 DOI: 10.1136/emermed-2019-209054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 08/23/2019] [Revised: 02/02/2020] [Accepted: 02/04/2020] [Indexed: 11/04/2022]
Abstract
OBJECTIVES We evaluated the association between timing of presentation and postconcussive symptoms (PCS) at 1, 4 and 12 weeks after injury. METHODS This was a secondary analysis of a prospective cohort study conducted in nine Canadian paediatric EDs in 2013-2015 (5P study). Participants were children who suffered a head injury within the preceding 48 hours and met Zurich consensus concussion diagnostic criteria. The exposure was the time between head injury and ED presentation. The primary outcome was the presence of PCS at 1 week defined by the presence of at least three symptoms on the Post-Concussion Symptom Inventory (PCSI). Secondary outcomes evaluated PCS at 4 and 12 weeks. Multivariable logistic regression analyses were adjusted for ED PCSI and other potential confounders. RESULTS There were 3041 patients with a concussion in which timing of the injury was known. 2287 (75%) participants sought care in the first 12 hours, 388 (13%) 12-24 hours after trauma and 366 (12%) between 24 and 48 hours. Compared with children who sought care >24 hours after trauma, children who sought care in the first 12 hours had a significantly lower incidence of PCS at 1 week (OR: 0.55 (95% CI 0.41 to 0.75)) and 4 weeks (OR: 0.74 (95% CI 0.56 to 0.99)) but not at 12 weeks (OR: 0.88 (95% CI 0.63 to 1.23)). CONCLUSIONS Patients who present early after a concussion appear to have a shorter duration of PCS than those presenting more than 12 hours later. Patients/families should be informed of the higher probability of PCS in children with delayed presentation.
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Affiliation(s)
- Jocelyn Gravel
- Department of Pediatrics, CHU Sainte-Justine, Montreal, Québec, Canada .,Paediatrics, Universite de Montreal, Montreal, Québec, Canada
| | | | - Ken Tang
- CHEO Research Institute, Ottawa, Ontario, Canada
| | | | - William Craig
- Pediatrics, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | | | - Kathy Boutis
- Pediatrics, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada.,Paediatrics, Children's Hospital, London, Ontario, Canada
| | - Emma Burns
- Emergency, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | | | - Darcy Beer
- Pediatrics, University of Manitoba, Winnipeg, Manitoba, Canada
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16
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Bueno R, Harpole D, Tsao M, Beer D, Watson M, Shepherd F, Richards W, Ballman K, Wang X, Chen Z, Govindan R, Chen G, Rivard C, Hirsch F. OA13.01 SPECS2 Lung Cancer Consortium Prospective Multicenter Validation of Prognostic Signature for Early Stage Squamous Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.477] [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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17
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Mannix R, Zemek R, Yeates KO, Arbogast K, Atabaki S, Badawy M, Beauchamp MH, Beer D, Bin S, Burstein B, Craig W, Corwin D, Doan Q, Ellis M, Freedman SB, Gagnon I, Gravel J, Leddy J, Lumba-Brown A, Master C, Mayer AR, Park G, Penque M, Rhine T, Russell K, Schneider K, Bell M, Wisniewski S. Practice Patterns in Pharmacological and Non-Pharmacological Therapies for Children with Mild Traumatic Brain Injury: A Survey of 15 Canadian and United States Centers. J Neurotrauma 2019; 36:2886-2894. [PMID: 31025612 DOI: 10.1089/neu.2018.6290] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Given the lack of evidence regarding effective pharmacological and non-pharmacological interventions for pediatric mild traumatic brain injury (mTBI) and the resultant lack of treatment recommendations reflected in consensus guidelines, variation in the management of pediatric mTBI is to be expected. We therefore surveyed practitioners across 15 centers in the United States and Canada who care for children with pediatric mTBI to evaluate common-practice variation in the management of pediatric mTBI. The survey, developed by a panel of pediatric mTBI experts, consisted of a 10-item survey instrument regarding providers' perception of common pediatric mTBI symptoms and mTBI interventions. Surveys were distributed electronically to a convenience sample of local experts at each center. Frequencies and percentages (with confidence intervals [CI]) were determined for survey responses. One hundred and seven respondents (71% response rate) included specialists in pediatric Emergency Medicine, Sports Medicine, Neurology, Neurosurgery, Neuropsychology, Neuropsychiatry, Physical and Occupational Therapy, Physiatry/Rehabilitation, and General Pediatrics. Respondents rated headache as the most prevalently reported symptom after pediatric mTBI, followed by cognitive problems, dizziness, and irritability. Of the 65 (61%; [95% CI: 51,70]) respondents able to prescribe medications, non-steroidal anti-inflammatory medications (55%; [95% CI: 42,68]) and acetaminophen (59%; [95% CI: 46,71]) were most commonly recommended. One in five respondents reported prescribing amitriptyline for headache management after pediatric mTBI, whereas topiramate (8%; [95% CI: 3,17]) was less commonly reported. For cognitive problems, methylphenidate (11%; [95% CI: 4,21]) was used more commonly than amantadine (2%; [95% CI: 0,8]). The most common non-pharmacological interventions were rest ("always" or "often" recommended by 83% [95% CI: 63,92] of the 107 respondents), exercise (59%; [95%CI: 49,69]), vestibular therapy (42% [95%CI: 33,53]) and cervical spine exercises (29% [95%CI: 21,39]). Self-reported utilization for common pediatric mTBI interventions varied widely across our Canadian and United States consortium. Future effectiveness studies for pediatric mTBI are urgently needed to advance the evidence-based care.
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Affiliation(s)
- Rebekah Mannix
- Division of Emergency Medicine, Boston Children's Hospital, Boston, Massachusetts
| | - Roger Zemek
- Departments of Pediatrics and Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Keith Owen Yeates
- Department of Psychology, Faculty of Kinesiology, Alberta Children's Hospital Research Institute, and Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Kristy Arbogast
- Division of Emergency Medicine, Sports Medicine and Performance Center, Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Shireen Atabaki
- Division of Emergency Medicine, Children's National Health System, Washington, District of Columbia
| | - Mohammed Badawy
- Department of Pediatrics, University of Texas Southwestern Medical School, Dallas, Texas
| | - Miriam H Beauchamp
- Department of Psychology, University of Montréal and Ste-Justine Research Center, Montréal, Canada
| | - Darcy Beer
- Section of Pediatric Emergency Medicine, University of Manitoba, Children's Hospital of Winnipeg, Winnipeg, Manitoba, Canada
| | - Steven Bin
- UCSF School of Medicine, Division of Pediatric Emergency Medicine, San Francisco, California
| | - Brett Burstein
- Division of Pediatric Emergency Medicine, Department of Pediatrics, Montréal Children's Hospital, McGill University Health Centre, Montréal, Quebec, Canada
| | - William Craig
- Department of Pediatrics, University of Alberta and Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Dan Corwin
- Division of Emergency Medicine, Sports Medicine and Performance Center, Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Quynh Doan
- Children's Research Institute, Division of Emergency Medicine, Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michael Ellis
- Department of Surgery and Pediatrics, Section of Neurosurgery, University of Manitoba, Pan Am Concussion Program, Winnipeg, Manitoba, Canada
| | - Stephen B Freedman
- Stephen B. Freedman Sections of Pediatric Emergency Medicine and Gastroenterology, Department of Pediatrics, Alberta Children's Hospital, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Isabelle Gagnon
- School of Physical and Occupational Therapy, McGill University; Trauma Programs, Montréal Children's Hospital, McGill University Health Center, Montréal, Quebec, Canada
| | - Jocelyn Gravel
- Division of Emergency Medicine, University of Montréal and Ste-Justine Research Center, Montréal, Canada
| | - John Leddy
- UBMD Department of Orthopaedics and Sports Medicine, State University of New York at Buffalo, Buffalo, New York
| | - Angela Lumba-Brown
- Departments of Emergency Medicine and Pediatrics, Concussion and Brain Performance Center, Stanford University, Stanford, California
| | - Christina Master
- Division of Orthopaedics, Sports Medicine and Performance Center, Center for Injury Research and Prevention, The Children's Hospital of Philadelphia, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Andrew R Mayer
- The Mind Research Network/LBERI and Departments of Psychology, Neurology, and Psychiatry, University of New Mexico, Albuquerque, New Mexico
| | - Grace Park
- Department of Emergency Medicine, University of New Mexico Hospital, Albuquerque, New Mexico
| | - Michelle Penque
- Pediatrics Division of Emergency Medicine, and Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, New York
| | - Tara Rhine
- Department of Pediatrics, University of Cincinnati College of Medicine, Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Kelly Russell
- Department of Pediatrics and Child Health, University of Manitoba, Children's Hospital of Winnipeg, Winnipeg, Manitoba, Canada
| | - Kathryn Schneider
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, Alberta Children's Hospital Research Institute, and Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Michael Bell
- Department of Pediatrics and Critical Care Medicine, Children's National Medical Center, Washington, District of Columbia
| | - Stephen Wisniewski
- Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
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18
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Yeates KO, Tang K, Barrowman N, Freedman SB, Gravel J, Gagnon I, Sangha G, Boutis K, Beer D, Craig W, Burns E, Farion KJ, Mikrogianakis A, Barlow K, Dubrovsky AS, Meeuwisse W, Gioia G, Meehan WP, Beauchamp MH, Kamil Y, Grool AM, Hoshizaki B, Anderson P, Brooks BL, Vassilyadi M, Klassen T, Keightley M, Richer L, DeMatteo C, Osmond MH, Zemek R, Xie J, Chatfield J, Dow N, Papadimitropoulos R, Levesque T, Langford C, Tran TT, McGahern C, DiGirolamo V, Mazza J, Lagacé M, Cook R, Fitzpatrick E, MacIntyre J, Moore J. Derivation and Initial Validation of Clinical Phenotypes of Children Presenting with Concussion Acutely in the Emergency Department: Latent Class Analysis of a Multi-Center, Prospective Cohort, Observational Study. J Neurotrauma 2019; 36:1758-1767. [DOI: 10.1089/neu.2018.6009] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Keith Owen Yeates
- Department of Psychology, Alberta Children's Hospital Research Institute, and Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Kenneth Tang
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Nick Barrowman
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Stephen B. Freedman
- Department of Pediatrics, Alberta Children's Hospital, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Jocelyn Gravel
- Department of Pediatrics, Hospital Sainte Justine, University of Montreal, Montreal, Quebec, Canada
| | - Isabelle Gagnon
- Department of Pediatrics, Montreal Children's Hospital, McGill University Health Center, Montreal, Quebec, Canada
| | - Gurinder Sangha
- Department of Pediatrics, Children's Hospital of Western Ontario, Western University, London, Ontario, Canada
| | - Kathy Boutis
- Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Darcy Beer
- Department of Pediatrics, Manitoba Children's Hospital, Winnipeg, Manitoba, Canada
| | - William Craig
- Department of Pediatrics, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Emma Burns
- Department of Emergency Medicine, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Ken J. Farion
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
| | - Angelo Mikrogianakis
- Department of Pediatrics, Alberta Children's Hospital, Calgary, Alberta, Alberta
| | - Karen Barlow
- Department of Pediatrics, Alberta Children's Hospital, Calgary, Alberta, Alberta
| | - Alexander S. Dubrovsky
- Department of Pediatrics, Montreal Children's Hospital, McGill University Health Center, Montreal, Quebec, Canada
| | - Willem Meeuwisse
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Gerard Gioia
- Department of Neuropsychology, Children's National Health System, George Washington University School of Medicine, Rockville, Maryland
| | - William P. Meehan
- Sports Concussion Clinic, Boston Children's Hospital, Boston, Massachusetts
| | - Miriam H. Beauchamp
- Ste. Justine Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Yael Kamil
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Anne M. Grool
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Blaine Hoshizaki
- Department of Kinesiology, University of Ottawa, Ottawa, Ontario, Canada
| | - Peter Anderson
- Department of Psychology, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Brian L. Brooks
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Michael Vassilyadi
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- Division of Neurosurgery, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Terry Klassen
- Department of Pediatrics, Manitoba Children's Hospital, Winnipeg, Manitoba, Canada
| | - Michelle Keightley
- Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, Toronto, Ontario, Canada
| | - Lawrence Richer
- Department of Neurology, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Carol DeMatteo
- School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada
| | - Martin H. Osmond
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
| | - Roger Zemek
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Ontario, Canada
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Brooks BL, Plourde V, Beauchamp MH, Tang K, Yeates KO, Keightley M, Anderson P, Désiré N, Barrowman N, Zemek R, Aglipay M, Barlow K, Beer D, Boutis K, Burns E, Craig W, DeMatteo C, Dubrovsky AS, Farion KJ, Freedman SB, Gagnon I, Gioia G, Gravel J, Grool AM, Hoshizaki B, Kamil Y, Klassen T, McGahern C, Meehan III WP, Meeuwisse W, Mikrogianakis A, Osmond MH, Richer L, Sangha G, Vassilyadi M. Predicting Psychological Distress after Pediatric Concussion. J Neurotrauma 2019; 36:679-685. [DOI: 10.1089/neu.2018.5792] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Brian L. Brooks
- Alberta Children's Hospital, Alberta Children's Hospital Research Institute, Calgary, Alberta, Canada
- Departments of Pediatrics, Clinical Neurosciences, and Psychology, University of Calgary, Calgary, Alberta, Canada
| | - Vickie Plourde
- Faculty Saint-Jean, University of Alberta, Edmonton, Alberta, Canada
| | - Miriam H. Beauchamp
- Department of Psychology, University of Montreal & Ste-Justine Hospital Research Center, Montreal, Quebec, Canada
| | - Ken Tang
- Clinical Research Unit, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Keith Owen Yeates
- Departments of Pediatrics, Clinical Neurosciences, and Psychology, University of Calgary, Calgary, Alberta, Canada
- Alberta Children's Hospital Research Institute, Hotchkiss Brain Institute, Calgary, Alberta, Canada
| | - Michelle Keightley
- Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, Departments of Occupational Science and Occupational Therapy and Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada
| | - Peter Anderson
- Children's Hospital of Eastern Ontario Research Institute, Behavioral Neurosciences & Consultation-Liaison Program, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Naddley Désiré
- Alberta Children's Hospital, Alberta Children's Hospital Research Institute, Calgary, Alberta, Canada
| | - Nick Barrowman
- Clinical Research Unit, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Roger Zemek
- Clinical Research Unit, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
- Departments of Pediatrics and Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Yu H, Chen Z, Ballman K, Watson M, Govindan R, Beer D, Bueno R, Herman M, Franklin W, Gandara D, Joshi M, Merrick D, Richards W, Rivard C, Shepherd F, Tsao M, Bokhoven A, Harpole D, Hirsch F. P1.04-23 Expression of Emerging Immunotherapy Targets in Early-Stage Squamous Lung Carcinoma. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.738] [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]
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Maas AIR, Menon DK, Adelson PD, Andelic N, Bell MJ, Belli A, Bragge P, Brazinova A, Büki A, Chesnut RM, Citerio G, Coburn M, Cooper DJ, Crowder AT, Czeiter E, Czosnyka M, Diaz-Arrastia R, Dreier JP, Duhaime AC, Ercole A, van Essen TA, Feigin VL, Gao G, Giacino J, Gonzalez-Lara LE, Gruen RL, Gupta D, Hartings JA, Hill S, Jiang JY, Ketharanathan N, Kompanje EJO, Lanyon L, Laureys S, Lecky F, Levin H, Lingsma HF, Maegele M, Majdan M, Manley G, Marsteller J, Mascia L, McFadyen C, Mondello S, Newcombe V, Palotie A, Parizel PM, Peul W, Piercy J, Polinder S, Puybasset L, Rasmussen TE, Rossaint R, Smielewski P, Söderberg J, Stanworth SJ, Stein MB, von Steinbüchel N, Stewart W, Steyerberg EW, Stocchetti N, Synnot A, Te Ao B, Tenovuo O, Theadom A, Tibboel D, Videtta W, Wang KKW, Williams WH, Wilson L, Yaffe K, Adams H, Agnoletti V, Allanson J, Amrein K, Andaluz N, Anke A, Antoni A, van As AB, Audibert G, Azaševac A, Azouvi P, Azzolini ML, Baciu C, Badenes R, Barlow KM, Bartels R, Bauerfeind U, Beauchamp M, Beer D, Beer R, Belda FJ, Bellander BM, Bellier R, Benali H, Benard T, Beqiri V, Beretta L, Bernard F, Bertolini G, Bilotta F, Blaabjerg M, den Boogert H, Boutis K, Bouzat P, Brooks B, Brorsson C, Bullinger M, Burns E, Calappi E, Cameron P, Carise E, Castaño-León AM, Causin F, Chevallard G, Chieregato A, Christie B, Cnossen M, Coles J, Collett J, Della Corte F, Craig W, Csato G, Csomos A, Curry N, Dahyot-Fizelier C, Dawes H, DeMatteo C, Depreitere B, Dewey D, van Dijck J, Đilvesi Đ, Dippel D, Dizdarevic K, Donoghue E, Duek O, Dulière GL, Dzeko A, Eapen G, Emery CA, English S, Esser P, Ezer E, Fabricius M, Feng J, Fergusson D, Figaji A, Fleming J, Foks K, Francony G, Freedman S, Freo U, Frisvold SK, Gagnon I, Galanaud D, Gantner D, Giraud B, Glocker B, Golubovic J, Gómez López PA, Gordon WA, Gradisek P, Gravel J, Griesdale D, Grossi F, Haagsma JA, Håberg AK, Haitsma I, Van Hecke W, Helbok R, Helseth E, van Heugten C, Hoedemaekers C, Höfer S, Horton L, Hui J, Huijben JA, Hutchinson PJ, Jacobs B, van der Jagt M, Jankowski S, Janssens K, Jelaca B, Jones KM, Kamnitsas K, Kaps R, Karan M, Katila A, Kaukonen KM, De Keyser V, Kivisaari R, Kolias AG, Kolumbán B, Kolundžija K, Kondziella D, Koskinen LO, Kovács N, Kramer A, Kutsogiannis D, Kyprianou T, Lagares A, Lamontagne F, Latini R, Lauzier F, Lazar I, Ledig C, Lefering R, Legrand V, Levi L, Lightfoot R, Lozano A, MacDonald S, Major S, Manara A, Manhes P, Maréchal H, Martino C, Masala A, Masson S, Mattern J, McFadyen B, McMahon C, Meade M, Melegh B, Menovsky T, Moore L, Morgado Correia M, Morganti-Kossmann MC, Muehlan H, Mukherjee P, Murray L, van der Naalt J, Negru A, Nelson D, Nieboer D, Noirhomme Q, Nyirádi J, Oddo M, Okonkwo DO, Oldenbeuving AW, Ortolano F, Osmond M, Payen JF, Perlbarg V, Persona P, Pichon N, Piippo-Karjalainen A, Pili-Floury S, Pirinen M, Ple H, Poca MA, Posti J, Van Praag D, Ptito A, Radoi A, Ragauskas A, Raj R, Real RGL, Reed N, Rhodes J, Robertson C, Rocka S, Røe C, Røise O, Roks G, Rosand J, Rosenfeld JV, Rosenlund C, Rosenthal G, Rossi S, Rueckert D, de Ruiter GCW, Sacchi M, Sahakian BJ, Sahuquillo J, Sakowitz O, Salvato G, Sánchez-Porras R, Sándor J, Sangha G, Schäfer N, Schmidt S, Schneider KJ, Schnyer D, Schöhl H, Schoonman GG, Schou RF, Sir Ö, Skandsen T, Smeets D, Sorinola A, Stamatakis E, Stevanovic A, Stevens RD, Sundström N, Taccone FS, Takala R, Tanskanen P, Taylor MS, Telgmann R, Temkin N, Teodorani G, Thomas M, Tolias CM, Trapani T, Turgeon A, Vajkoczy P, Valadka AB, Valeinis E, Vallance S, Vámos Z, Vargiolu A, Vega E, Verheyden J, Vik A, Vilcinis R, Vleggeert-Lankamp C, Vogt L, Volovici V, Voormolen DC, Vulekovic P, Vande Vyvere T, Van Waesberghe J, Wessels L, Wildschut E, Williams G, Winkler MKL, Wolf S, Wood G, Xirouchaki N, Younsi A, Zaaroor M, Zelinkova V, Zemek R, Zumbo F. Traumatic brain injury: integrated approaches to improve prevention, clinical care, and research. Lancet Neurol 2017; 16:987-1048. [DOI: 10.1016/s1474-4422(17)30371-x] [Citation(s) in RCA: 822] [Impact Index Per Article: 117.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 07/06/2017] [Accepted: 09/27/2017] [Indexed: 12/11/2022]
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Schuh S, Sweeney J, Freedman SB, Coates AL, Johnson DW, Thompson G, Gravel J, Ducharme FM, Zemek R, Plint AC, Beer D, Klassen T, Curtis S, Black K, Nicksy D, Willan AR. Magnesium nebulization utilization in management of pediatric asthma (MagNUM PA) trial: study protocol for a randomized controlled trial. Trials 2016; 17:261. [PMID: 27220675 PMCID: PMC4879727 DOI: 10.1186/s13063-015-1151-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 12/30/2015] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Up to 30 % of children with acute asthma are refractory to initial therapy, and 84 % of this subpopulation needs hospitalization. Finding safe, noninvasive, and effective strategies to treat this high-risk group would substantially decrease hospitalizations, healthcare costs, and the psycho-social burden of the disease. Whereas intravenous magnesium (Mg) is effective in severe refractory asthma, its use is sporadic due to safety concerns, with the main treatment goal being to prevent intensive care unit admission. In contrast, nebulized Mg is noninvasive, allows higher pulmonary drug concentrations, and has a much higher safety potential due to the lower rate of systemic delivery. Previous studies of inhaled Mg show disparate results due to the use of unknown/inefficient delivery methods and other methodological flaws. METHODS/DESIGN The study is a randomized double-blind controlled trial in seven Canadian pediatric Emergency Departments (two-center pilot 2011 to 2014, Canada-wide November 2014 to December 2017). The trial will include 816 otherwise healthy children who are 2 to 17 years old, having had at least one previous wheezing episode, have received systemic corticosteroids, and have a Pediatric Respiratory Assessment Measure (PRAM) ≥ 5 points after three salbutamol and ipratropium treatments for a current acute asthma exacerbation. Eligible consenting children will receive three experimental treatments of nebulized salbutamol with either 600 mg of Mg sulfate or placebo 20 min apart, using an Aeroneb Go nebulizer, which has been shown to maximize pulmonary delivery while maintaining safety. The primary outcome is hospitalization within 24 h of the start of the experimental therapy for persistent respiratory distress or supplemental oxygen. Secondary outcomes include all-cause hospitalization within 24 h, PRAM, vital signs, number of bronchodilator treatments by 240 min, and the association between the difference in the primary outcome between the groups, age, gender, baseline PRAM, atopy, and "viral induced wheeze" phenotype (Fig. 1). DISCUSSION If effective, inhaled Mg may represent an effective strategy to minimize morbidity in pediatric refractory acute asthma. Unlike previous works, this trial targets nonresponders to optimized initial therapy who are the most likely to benefit from inhaled Mg. Future dissemination of results will include knowledge translation, incorporation into a Cochrane Review, presentation at scientific meetings, and a peer-reviewed publication. TRIAL REGISTRATION NCTO1429415 , registered 2 September 2011.
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Affiliation(s)
- Suzanne Schuh
- />Division of Paediatric Emergency Medicine, The Hospital for Sick Children, Child Health Evaluative Sciences, SickKids Research Institute, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8 Canada
| | - Judy Sweeney
- />SickKids Research Institute, The Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8 Canada
| | - Stephen B. Freedman
- />Sections of Pediatric Emergency Medicine and Gastroenterology, Alberta Children’s Hospital, Alberta Children’s Hospital Research Institute, University of Calgary, 2888 Shaganappi Trail NW, Calgary, AB T3B 6AB Canada
| | - Allan L. Coates
- />SickKids Research Institute, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8 Canada
| | - David W. Johnson
- />Departments of Paediatrics, Pharmacology and Physiology, Alberta Children’s Hospital Research Institute, Faculty of Medicine, University of Calgary, C4,643, 2888 Shaganappi Trail NW, Calgary, AB T3B 6AB Canada
| | - Graham Thompson
- />Division of Pediatric Emergency Medicine, Alberta Children’s Hospital, University of Calgary, 2888 Shaganappi Trail NW, Calgary, AB T3B 6AB Canada
| | - Jocelyn Gravel
- />Division of Paediatric Emergency Medicine, Department of Pediatrics, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, 3175 Cote Sainte-Catherine, Montreal, QC H3T 1C5 Canada
| | - Francine M. Ducharme
- />Department of Pediatrics, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, 175 Cote Sainte-Catherine, Montreal, QC H3T 1C5 Canada
| | - Roger Zemek
- />Division of Pediatric Emergency Medicine, Children’s Hospital of Eastern Ontario (CHEO), 401 Smyth Road, Ottawa, ON K1H 8L1 Canada
| | - Amy C. Plint
- />Division of Emergency Medicine, Children’s Hospital of Eastern Ontario (CHEO), 401 Smyth Road, Ottawa, ON K1H 8L1 Canada
| | - Darcy Beer
- />Divsion of Pediatric Emergency Medicine, The Children’s Hospital of Winnipeg, University of Manitoba, 820 Sherbrook Street, Winnipeg, MB R3J 1R9 Canada
| | - Terry Klassen
- />Children’s Hospital Research Institute of Manitoba (formerly Manitoba Institute of Child Health), Academic Faculty of Medicine, 715 McDermot Ave, Winnipeg, MB R3E 3P4 Canada
- />Department of Pediatrics and Child Health, University of Manitoba, 715 McDermot Ave, Winnipeg, MB R3E 3P4 Canada
- />Child Health Program, Winnipeg Health Region MICH, 715 McDermot Ave, Winnipeg, MB R3E 3P4 Canada
| | - Sarah Curtis
- />Division of Paediatric Emergency Medicine, Stollery Children’s Hospital, University of Alberta, 8440 112 Street Northwest, Edmonton, AB T6G 2B7 Canada
| | - Karen Black
- />Division of Pediatric Emergency Medicine, University of British Columbia, BC Children’s Hospital, 4480 Oak St, Vancouver, BC V6H 3N1 Canada
| | - Darcy Nicksy
- />SickKids Research Institute, The Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8 Canada
| | - Andrew R. Willan
- />Child Health Evaluative Sciences, SickKids Research Institute, Dalla Lana School of Public Health, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8 Canada
| | - on behalf of Pediatric Emergency Research Canada Group
- />Division of Paediatric Emergency Medicine, The Hospital for Sick Children, Child Health Evaluative Sciences, SickKids Research Institute, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8 Canada
- />Sections of Pediatric Emergency Medicine and Gastroenterology, Alberta Children’s Hospital, Alberta Children’s Hospital Research Institute, University of Calgary, 2888 Shaganappi Trail NW, Calgary, AB T3B 6AB Canada
- />Departments of Paediatrics, Pharmacology and Physiology, Alberta Children’s Hospital Research Institute, Faculty of Medicine, University of Calgary, C4,643, 2888 Shaganappi Trail NW, Calgary, AB T3B 6AB Canada
- />Division of Pediatric Emergency Medicine, Alberta Children’s Hospital, University of Calgary, 2888 Shaganappi Trail NW, Calgary, AB T3B 6AB Canada
- />Division of Paediatric Emergency Medicine, Department of Pediatrics, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, 3175 Cote Sainte-Catherine, Montreal, QC H3T 1C5 Canada
- />Department of Pediatrics, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, 175 Cote Sainte-Catherine, Montreal, QC H3T 1C5 Canada
- />Division of Pediatric Emergency Medicine, Children’s Hospital of Eastern Ontario (CHEO), 401 Smyth Road, Ottawa, ON K1H 8L1 Canada
- />Division of Emergency Medicine, Children’s Hospital of Eastern Ontario (CHEO), 401 Smyth Road, Ottawa, ON K1H 8L1 Canada
- />Divsion of Pediatric Emergency Medicine, The Children’s Hospital of Winnipeg, University of Manitoba, 820 Sherbrook Street, Winnipeg, MB R3J 1R9 Canada
- />Children’s Hospital Research Institute of Manitoba (formerly Manitoba Institute of Child Health), Academic Faculty of Medicine, 715 McDermot Ave, Winnipeg, MB R3E 3P4 Canada
- />Department of Pediatrics and Child Health, University of Manitoba, 715 McDermot Ave, Winnipeg, MB R3E 3P4 Canada
- />Child Health Program, Winnipeg Health Region MICH, 715 McDermot Ave, Winnipeg, MB R3E 3P4 Canada
- />Division of Paediatric Emergency Medicine, Stollery Children’s Hospital, University of Alberta, 8440 112 Street Northwest, Edmonton, AB T6G 2B7 Canada
- />Division of Pediatric Emergency Medicine, University of British Columbia, BC Children’s Hospital, 4480 Oak St, Vancouver, BC V6H 3N1 Canada
- />SickKids Research Institute, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8 Canada
- />Child Health Evaluative Sciences, SickKids Research Institute, Dalla Lana School of Public Health, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8 Canada
- />SickKids Research Institute, The Hospital for Sick Children, 555 University Ave, Toronto, ON M5G 1X8 Canada
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Zemek R, Barrowman N, Freedman SB, Gravel J, Gagnon I, McGahern C, Aglipay M, Sangha G, Boutis K, Beer D, Craig W, Burns E, Farion KJ, Mikrogianakis A, Barlow K, Dubrovsky AS, Meeuwisse W, Gioia G, Meehan WP, Beauchamp MH, Kamil Y, Grool AM, Hoshizaki B, Anderson P, Brooks BL, Yeates KO, Vassilyadi M, Klassen T, Keightley M, Richer L, DeMatteo C, Osmond MH. Clinical Risk Score for Persistent Postconcussion Symptoms Among Children With Acute Concussion in the ED. JAMA 2016; 315:1014-25. [PMID: 26954410 DOI: 10.1001/jama.2016.1203] [Citation(s) in RCA: 556] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
IMPORTANCE Approximately one-third of children experiencing acute concussion experience ongoing somatic, cognitive, and psychological or behavioral symptoms, referred to as persistent postconcussion symptoms (PPCS). However, validated and pragmatic tools enabling clinicians to identify patients at risk for PPCS do not exist. OBJECTIVE To derive and validate a clinical risk score for PPCS among children presenting to the emergency department. DESIGN, SETTING, AND PARTICIPANTS Prospective, multicenter cohort study (Predicting and Preventing Postconcussive Problems in Pediatrics [5P]) enrolled young patients (aged 5-<18 years) who presented within 48 hours of an acute head injury at 1 of 9 pediatric emergency departments within the Pediatric Emergency Research Canada (PERC) network from August 2013 through September 2014 (derivation cohort) and from October 2014 through June 2015 (validation cohort). Participants completed follow-up 28 days after the injury. EXPOSURES All eligible patients had concussions consistent with the Zurich consensus diagnostic criteria. MAIN OUTCOMES AND MEASURES The primary outcome was PPCS risk score at 28 days, which was defined as 3 or more new or worsening symptoms using the patient-reported Postconcussion Symptom Inventory compared with recalled state of being prior to the injury. RESULTS In total, 3063 patients (median age, 12.0 years [interquartile range, 9.2-14.6 years]; 1205 [39.3%] girls) were enrolled (n = 2006 in the derivation cohort; n = 1057 in the validation cohort) and 2584 of whom (n = 1701 [85%] in the derivation cohort; n = 883 [84%] in the validation cohort) completed follow-up at 28 days after the injury. Persistent postconcussion symptoms were present in 801 patients (31.0%) (n = 510 [30.0%] in the derivation cohort and n = 291 [33.0%] in the validation cohort). The 12-point PPCS risk score model for the derivation cohort included the variables of female sex, age of 13 years or older, physician-diagnosed migraine history, prior concussion with symptoms lasting longer than 1 week, headache, sensitivity to noise, fatigue, answering questions slowly, and 4 or more errors on the Balance Error Scoring System tandem stance. The area under the curve was 0.71 (95% CI, 0.69-0.74) for the derivation cohort and 0.68 (95% CI, 0.65-0.72) for the validation cohort. CONCLUSIONS AND RELEVANCE A clinical risk score developed among children presenting to the emergency department with concussion and head injury within the previous 48 hours had modest discrimination to stratify PPCS risk at 28 days. Before this score is adopted in clinical practice, further research is needed for external validation, assessment of accuracy in an office setting, and determination of clinical utility.
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Affiliation(s)
- Roger Zemek
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | - Nick Barrowman
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Stephen B Freedman
- Department of Pediatrics, Alberta Children's Hospital, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Canada
| | - Jocelyn Gravel
- Department of Pediatrics, Hospital Ste Justine, University of Montreal, Montreal, Quebec, Canada
| | - Isabelle Gagnon
- Department of Pediatrics, Montreal Children's Hospital, McGill University Health Center, Montreal, Quebec, Canada
| | - Candice McGahern
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Mary Aglipay
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Gurinder Sangha
- Department of Pediatrics, Children's Hospital of Western Ontario, Western University, London, Canada
| | - Kathy Boutis
- Department of Pediatrics, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Darcy Beer
- Department of Pediatrics, Manitoba Children's Hospital, Winnipeg, Canada
| | - William Craig
- Department of Pediatrics, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Emma Burns
- Department of Pediatrics, IWK Health Centre, Halifax, Nova Scotia, Canada
| | - Ken J Farion
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | | | - Karen Barlow
- Department of Pediatrics and Clinical Neurosciences, Alberta's Children's Hospital, University of Calgary, Calgary, Canada
| | - Alexander S Dubrovsky
- Department of Pediatrics, Montreal Children's Hospital, McGill University Health Center, Montreal, Quebec, Canada
| | - Willem Meeuwisse
- Sport Injury Prevention Research Centre, Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada
| | - Gerard Gioia
- Department of Neuropsychology, Children's National Health System, George Washington University School of Medicine, Rockville, Maryland
| | - William P Meehan
- Sports Concussion Clinic, Boston Children's Hospital, Boston, Massachusetts
| | - Miriam H Beauchamp
- Ste Justine Research Center, University of Montreal, Montreal, Quebec, Canada
| | - Yael Kamil
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Anne M Grool
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - Blaine Hoshizaki
- Department of Kinesiology, University of Ottawa, Ottawa, Ontario, Canada
| | - Peter Anderson
- Department of Psychology, Children's Hospital of Eastern Ontario, Ottawa, Canada
| | - Brian L Brooks
- Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Canada
| | - Keith Owen Yeates
- Department of Psychology, Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Canada
| | - Michael Vassilyadi
- Department of Neurosurgery, Children's Hospital of Eastern Ontario, Ottawa, Canada
| | - Terry Klassen
- Department of Pediatrics, Manitoba Children's Hospital, Winnipeg, Canada
| | - Michelle Keightley
- Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, Toronto, Ontario, Canada
| | - Lawrence Richer
- Department of Neurology, Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Carol DeMatteo
- School of Rehabilitation Science, McMaster University, Hamilton, Ontario, Canada
| | - Martin H Osmond
- Department of Pediatrics, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
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Thompson GC, Schuh S, Gravel J, Reid S, Fitzpatrick E, Turner T, Bhatt M, Beer D, Blair G, Eccles R, Jones S, Kilgar J, Liston N, Martin J, Hagel B, Nettel-Aguirre A. Variation in the Diagnosis and Management of Appendicitis at Canadian Pediatric Hospitals. Acad Emerg Med 2015; 22:811-22. [PMID: 26130319 DOI: 10.1111/acem.12709] [Citation(s) in RCA: 25] [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] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 12/12/2014] [Accepted: 01/12/2015] [Indexed: 12/19/2022]
Abstract
OBJECTIVES The objective was to characterize the variations in practice in the diagnosis and management of children admitted to hospitals from Canadian pediatric emergency departments (EDs) with suspected appendicitis, specifically the timing of surgical intervention, ED investigations, and management strategies. METHODS Twelve sites participated in this retrospective health record review. Children aged 3 to 17 years admitted to the hospital with suspected appendicitis were eligible. Site-specific demographics, investigations, and interventions performed were recorded and compared. Factors associated with after-hours surgery were determined using generalized estimating equations logistic regression. RESULTS Of the 619 children meeting eligibility criteria, surgical intervention was performed in 547 (88%). After-hours surgery occurred in 76 of the 547 children, with significant variation across sites (13.9%, 95% confidence interval = 7.1% to 21.6%, p < 0.001). The overall perforation rate was 17.4% (95 of 547), and the negative appendectomy rate was 6.8% (37 of 547), varying across sites (p = 0.004 and p = 0.036, respectively). Use of inflammatory markers (p < 0.001), blood cultures (p < 0.001), ultrasound (p = 0.001), and computed tomography (p = 0.001) also varied by site. ED administration of narcotic analgesia and antibiotics varied across sites (p < 0.001 and p = 0.001, respectively), as did the type of surgical approach (p < 0.001). After-hours triage had a significant inverse association with after-hours surgery (p = 0.014). CONCLUSIONS Across Canadian pediatric EDs, there exists significant variation in the diagnosis and management of children with suspected appendicitis. These results indicate that the best diagnostic and management strategies remain unclear and support the need for future prospective, multicenter studies to identify strategies associated with optimal patient outcomes.
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Affiliation(s)
- Graham C. Thompson
- Alberta Children's Hospital Research Institute and Department of Pediatrics; University of Calgary; Calgary AB
| | - Suzanne Schuh
- Hospital for Sick Children; University of Toronto; Toronto ON
| | - Jocelyn Gravel
- Centre Hospitalier Universitaire Ste-Justine; Universite de Montreal; Montreal QC
| | - Sarah Reid
- Children's Hospital of Eastern Ontario; University of Ottawa; Ottawa ON
| | | | - Troy Turner
- Stollery Children's Hospital; University of Alberta; Edmonton AB
| | - Maala Bhatt
- Hospital for Sick Children; University of Toronto; Toronto ON
| | - Darcy Beer
- Winnipeg Children's Hospital; University of Manitoba; Winnipeg MB
| | - Geoffrey Blair
- British Columbia Children's Hospital; University of British Columbia; Vancouver BC
| | - Robin Eccles
- Alberta Children's Hospital Research Institute and Department of Pediatrics; University of Calgary; Calgary AB
| | - Sarah Jones
- Children's Hospital London Health Sciences Centre; Western University; London ON
| | - Jennifer Kilgar
- Children's Hospital London Health Sciences Centre; Western University; London ON
| | - Natalia Liston
- Alberta Children's Hospital Research Institute and Department of Pediatrics; University of Calgary; Calgary AB
| | - John Martin
- Janeway Children's Health and Rehabilitation Centre; Memorial University; St. John's NL
| | - Brent Hagel
- Alberta Children's Hospital Research Institute and Department of Pediatrics; University of Calgary; Calgary AB
- Department of Community Health Sciences; University of Calgary; Calgary AB
| | - Alberto Nettel-Aguirre
- Alberta Children's Hospital Research Institute and Department of Pediatrics; University of Calgary; Calgary AB
- Department of Community Health Sciences; University of Calgary; Calgary AB
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Hoffmann O, Regenauer M, Löwe R, Dehn-Rotfelser KV, Funke I, Burges A, Beer D, Mayer B. Identification of the most effective chemotherapy in recurrent ovarian cancer using the spheroid model. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388455] [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: 10/24/2022] Open
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Beer D, Friese K, Fürst S, Göß C, Hertlein L, Lenhard M, Grandl S, Heinemann V, Burges A. Individualized management of Aggressive Angiomyxoma: A case report. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388509] [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: 10/24/2022] Open
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27
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Arnold F, Margraf D, Hoffmann O, Dehn-Rotfelser KV, Funke I, Loewe R, Burges A, Beer D, Werner J, Mayer B. Tumor biology driven treatment selection in primary ovarian cancer. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388483] [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: 10/24/2022] Open
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28
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Rao SPS, Lakshminarayana SB, Kondreddi RR, Herve M, Camacho LR, Bifani P, Kalapala SK, Jiricek J, Ma NL, Tan BH, Ng SH, Nanjundappa M, Ravindran S, Seah PG, Thayalan P, Lim SH, Lee BH, Goh A, Barnes WS, Chen Z, Gagaring K, Chatterjee AK, Pethe K, Kuhen K, Walker J, Feng G, Babu S, Zhang L, Blasco F, Beer D, Weaver M, Dartois V, Glynne R, Dick T, Smith PW, Diagana TT, Manjunatha UH. Indolcarboxamide Is a Preclinical Candidate for Treating Multidrug-Resistant Tuberculosis. Sci Transl Med 2013; 5:214ra168. [DOI: 10.1126/scitranslmed.3007355] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Gravel J, Fitzpatrick E, Millar K, Curtis S, Joubert G, Boutis K, Guimont C, Goldman RD, Dubrovsky S, Porter R, Beer D, Osmond MH. Validity of the Canadian Triage and Acuity Scale for Children: A Multi-Centre, Database Study. Paediatr Child Health 2012. [DOI: 10.1093/pch/17.suppl_a.21aa] [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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31
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MacLeod DIA, Beer D. The extended Maxwellian view. J Vis 2010. [DOI: 10.1167/3.9.341] [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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34
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Beer D, Becker M, Anstis S, MacLeod D. Polarity-specific masking of isoluminant colors. J Vis 2010. [DOI: 10.1167/2.7.546] [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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35
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Kurabachew M, Lu SHJ, Krastel P, Schmitt EK, Suresh BL, Goh A, Knox JE, Ma NL, Jiricek J, Beer D, Cynamon M, Petersen F, Dartois V, Keller T, Dick T, Sambandamurthy VK. Lipiarmycin targets RNA polymerase and has good activity against multidrug-resistant strains of Mycobacterium tuberculosis. J Antimicrob Chemother 2008; 62:713-9. [DOI: 10.1093/jac/dkn269] [Citation(s) in RCA: 82] [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: 02/02/2023] Open
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36
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Beer D, Rüdt R. Die pseudotumoröse Kalzinose bei chronischer Niereninsuffizienz. AKTUEL RHEUMATOL 2008. [DOI: 10.1055/s-2008-1043582] [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: 10/21/2022]
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37
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Jin Z, Mori Y, Yang J, Sato F, Ito T, Cheng Y, Paun B, Hamilton JP, Kan T, Olaru A, David S, Agarwal R, Abraham JM, Beer D, Montgomery E, Meltzer SJ. Hypermethylation of the nel-like 1 gene is a common and early event and is associated with poor prognosis in early-stage esophageal adenocarcinoma. Oncogene 2007; 26:6332-40. [PMID: 17452981 DOI: 10.1038/sj.onc.1210461] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [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: 11/08/2022]
Abstract
The nel-like1 (NELL1) gene maps to chromosome 11p15, which frequently undergoes loss of heterozygosity in esophageal adenocarcinoma (EAC). NELL1 promoter hypermethylation was examined by real-time methylation-specific polymerase chain reaction in 259 human esophageal tissues. Hypermethylation of this promoter showed highly discriminative receiver-operator characteristic curve profiles, clearly distinguishing esophageal squamous cell carcinoma (ESCC) and EAC from normal esophagus (NE) (P<0.001). NELL1 normalized methylation values were significantly higher in Barrett's metaplasia (BE), dysplastic Barrett's (D) and EAC than in NE (P<0.0000001). NELL1 hypermethylation frequency was zero in NE but increased early during neoplastic progression, to 41.7% in BE from patients with Barrett's alone, 52.5% in D and 47.8% in EAC. There was a significant correlation between NELL1 hypermethylation and BE segment length. Three (11.5%) of 26 ESCCs exhibited NELL1 hypermethylation. Survival correlated inversely with NELL1 hypermethylation in patients with stages I-II (P=0.0264) but not in stages III-IV (P=0.68) EAC. Treatment of KYSE220 ESCC and BIC EAC cells with 5-aza-2'-deoxycytidine reduced NELL1 methylation and increased NELL1 mRNA expression. NELL1 mRNA levels in EACs with an unmethylated NELL1 promoter were significantly higher than those in EACs with a methylated promoter (P=0.02). Promoter hypermethylation of NELL1 is a common, tissue-specific event in human EAC, occurs early during Barrett's-associated esophageal neoplastic progression, and is a potential biomarker of poor prognosis in early-stage EAC.
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Affiliation(s)
- Z Jin
- Division of Gastroenterology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
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Beer D, Vandermeer B, Brosnikoff C, Shokoples S, Rennie R, Forgie S. Bacterial contamination of health care workers' pagers and the efficacy of various disinfecting agents. Pediatr Infect Dis J 2006; 25:1074-5. [PMID: 17072134 DOI: 10.1097/01.inf.0000242649.27400.94] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [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: 11/27/2022]
Abstract
Health care workers in our facility were surveyed, and their pagers were cultured before and after disinfection with various agents. All pagers were contaminated with bacteria, including the pathogens Staphylococcus aureus, Pseudomonas aeruginosa, Acinetobacter baumannii, Klebsiella spp. and methicillin-resistant S. aureus. Disinfection reduced bacterial contamination. No risk factors for pager contamination with pathogens were identified.
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Affiliation(s)
- Darcy Beer
- Department of Pediatrics and Stollery Children's Hospital, University of Alberta Hospitals, Edmonton, Alberta, Canada
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Abstract
Suppression of the publication of negative trials of serotonin-selective reuptake inhibitors (SSRI) in children (Apr 24, p 1335) is more than just a matter of "confusion, manipulation, and institutional failure". It is a crime. To blandly illustrate its severity, we can analogise the situation as follows: would you be concerned if a colleague prescribed penicillin to a child who had an uncomplicated upper respiratory tract infection of viral aetiology? Would you be more concerned if you heard that this child had a serious anaphylactic reaction to the penicillin at home? And how much more concerned would you be if you found out that the prescribing doctor was previously aware of the child's severe penicillin allergy? The latter scenario could be deemed malpractice. How, then, is it acceptable for pharmaceutical companies to suppress publication of SSRI studies that showed a lack of efficacy and an increased risk of serious adverse events in the children and adolescents in experimental trial groups (other than for fluoxetine)? Intentional concealment of these data, an accusation for which there is already public evidence, must be considered a form of corporate violence.
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Brichory F, Beer D, Le Naour F, Giordano T, Hanash S. Proteomics-based identification of protein gene product 9.5 as a tumor antigen that induces a humoral immune response in lung cancer. Cancer Res 2001; 61:7908-12. [PMID: 11691811] [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: 02/22/2023]
Abstract
We used a proteomic approach to identify proteins that commonly induce an antibody response in lung cancer. Sera from 64 newly diagnosed patients with lung cancer, 99 patients with other types of cancer, and 71 noncancer controls were analyzed for antibody-based reactivity against lung adenocarcinoma proteins resolved by two-dimensional PAGE. Unlike controls, autoantibodies against a protein identified by mass spectrometry as protein gene product 9.5 (PGP 9.5) were detected in sera from 9 of 64 patients with lung cancer. Circulating PGP 9.5 antigen was detected in sera from two additional patients with lung cancer, without detectable PGP 9.5 autoantibodies. PGP 9.5 is a neurospecific polypeptide previously proposed as a marker for non-small cell lung cancer, based on its expression in tumor tissue. Using A549 lung adenocarcinoma cell line, we have demonstrated that PGP 9.5 was present at the cell surface, as well as secreted. Thus, the findings of PGP 9.5 antigen and/or antibodies in serum of patients with lung cancer suggest that PGP 9.5 may have utility in lung cancer screening and diagnosis.
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Affiliation(s)
- F Brichory
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan 48109, USA
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42
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Abstract
We have developed a comprehensive approach to identifying molecular changes in lung cancer that includes both genomic and proteomic analyses. The related effort has produced a large amount of data pertaining to gene expression at the RNA and protein levels. As a result, we have constructed a database that contains protein expression data on lung cancer as well as other relevant data including DNA microarray derived data. A large number of proteins that are expressed in different types of lung cancer have been identified and have been correlated with the expression measures for their corresponding genes at the RNA level. The database is intended to facilitate our effort at developing novel classification schemes for lung cancer and the identification of novel markers for early diagnosis.
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Affiliation(s)
- J M Oh
- University of Michigan Medical Center, 1150 W. Medical Center Drive, A520 Medical Science Research Building I, Ann Arbor, MI 48109-0656, USA
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43
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Beer D, Bettschart V. [Abdominal pain]. Rev Med Suisse Romande 2001; 121:33-40. [PMID: 11234707] [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: 04/16/2023]
Abstract
The doctor on duty conducting home visits is frequently asked to care for patients with non-traumatic severe abdominal pain. For this reason, visiting doctors should be able to recognize tell-tale alarm signs, evaluate ailments that call for surgical referral to--particularly those that require emergency surgery--and, if necessary, perform simple paraclinical exams at the patient's bedside. In the case of intense abdominal pain requiring a rapid and effective "analgesia", the doctor should be able to administer an opiate, without of the surgical unit impairing the judgement. When hospitalisation or referral for surgery is not necessary, a re-evaluation at 12 to 36 hours later should be offered.
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Affiliation(s)
- D Beer
- Policlinique Médicale Universitaire, César-Roux 19, 1005 Lausanne
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44
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Abstract
We have developed a comprehensive approach to the identification of protein markers in lung cancer that includes profiling of tumor tissue and cell lines as well as the analysis of serum for autoantibodies to lung tumor antigens. A large number of proteins that are differentially expressed in the major subtypes of lung cancer have been identified by mass spectrometry. A database of protein expression in lung cancer and other types of cancer has been constructed that integrates two-dimensional gel profiles, mass spectrometry data, quantitative protein data and gene expression data at the RNA level, that serves as a resource for biomarker identification. Analysis of the serological response in lung cancer has led to the identification of novel markers detectable in serum of lung cancer patients at the time of diagnosis. The proteomic approach is likely to yield novel classification schemes and novel markers for early diagnosis of lung cancer.
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Affiliation(s)
- S Hanash
- Department of Pediatrics, University of Michigan Medical Center, A520 Medical Science Research Bldg. I, 1150 W. Medical Center Drive, Ann Arbor, MI 48109, USA.
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45
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Leonard HL, Swedo SE, Garvey M, Beer D, Perlmutter S, Lougee L, Karitani M, Dubbert B. Postinfectious and other forms of obsessive-compulsive disorder. Child Adolesc Psychiatr Clin N Am 1999; 8:497-511. [PMID: 10442228] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
The search for subtypes of OCD has led to increased appreciation of the importance of distinguishing early (prepubertal) versus later on-set, and of tic-related versus non-tic related subtypes, as well as postinfectious forms of the disorder. How these apparent typologies relate to each other remains to be elucidated. Careful longitudinal clinical descriptive studies, as well as the ongoing application of genetic, neuroimaging, and immunologic techniques, promise to advance our understanding of how genotype and environmental factors interact to produce the diverse clinical forms of OCD and to point the way to more effective treatment.
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Affiliation(s)
- H L Leonard
- Division of Child and Adolescent Psychiatry, Rhode Island Hospital, Providence, USA.
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Papageorgiou AC, Quinn CP, Beer D, Brehm RD, Tranter HS, Bonventre PF, Acharya KR. Crystal structure of a biologically inactive mutant of toxic shock syndrome toxin-1 at 2.5 A resolution. Protein Sci 1996; 5:1737-41. [PMID: 8844860 PMCID: PMC2143494 DOI: 10.1002/pro.5560050826] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 02/02/2023]
Abstract
Toxic shock syndrome toxin-1 (TSST-1) is one of a family of staphylococcal exotoxins recognized as microbial superantigens. The toxin plays a dominant role in the genesis of toxic shock in humans through a massive activation of the immune system. This potentially lethal illness occurs as a result of the interaction of TSST-1 with a significant proportion of the T-cell repertoire. TSST-1, like other superantigens, can bind directly to class II major histocompatibility (MHC class II) molecules prior to its interaction with entire families of V beta chains of the T-cell receptor (TCR). The three-dimensional structure of a mutant (His-135-Ala) TSST-1 was compared with the structure of the native (wild-type) TSST-1 at 2.5 A resolution. The replacement of His 135 of TSST-1 with an Ala residue results in the loss of T-cell mitogenicity and toxicity in experimental animals. This residue, postulated to be directly involved in the toxin-TCR interactions, is located on the major helix alpha 2, which forms the backbone of the molecule and is exposed to the solvent. In the molecular structure of the mutant toxin, the helix alpha 2 remains unaltered, but the His to Ala modification causes perturbations on the neighboring helix alpha 1 by disrupting helix-helix interactions. Thus, the effects on TCR binding of the His 135 residue could actually be mediated, wholly or in part, by the alpha 1 helix.
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Affiliation(s)
- A C Papageorgiou
- School of Biology and Biochemistry, University of Bath, Claverton Down, United Kingdom
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Abstract
Multiple personality disorder is the classification given a person for whom two or more distinct personalities are diagnosed. The personalities can be different and vary in character from aggressive to submissive (victimized). The victim alters can be abused and abuse or mutilate self to relieve anxiety or guilt (deserving punishment) or to exert control. Alters may provide a means of expressing anger or other feelings. Aggression towards the body may be sexually oriented, so one may ask whether aggression could make self-rape possible. If so, such expression of self-injuries may be observed in a person with multiple personality as when one alter may injure another. Clinical case material is presented on this concept for a woman who had been formally diagnosed with multiple personality disorder.
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Probst MR, Beer M, Beer D, Jenö P, Meyer UA, Gasser R. Human liver arylacetamide deacetylase. Molecular cloning of a novel esterase involved in the metabolic activation of arylamine carcinogens with high sequence similarity to hormone-sensitive lipase. J Biol Chem 1994; 269:21650-6. [PMID: 8063807] [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: 01/28/2023] Open
Abstract
Microsomal arylacetamide deacetylase (DAC) competes against the activity of cytosolic arylamine N-acetyltransferase, which catalyzes one of the initial biotransformation pathways for arylamine and heterocyclic amine carcinogens in many species and tissues. Activity determination and immunoblot analysis of DAC in human target tissues for arylamine carcinogens revealed that in extrahepatic tissues, additional enzymes are responsible for any deacetylation activity, whereas a single enzyme predominantly catalyzes this hydrolytic reaction in liver. We isolated and characterized a full-length cDNA from a human liver lambda gt11 library. This clone encodes an open reading frame of 400 amino acids with a deduced molecular mass of 45.7 kDa and contains two putative glycosylation sites. The 3'-untranslated region contains two putative polyadenylation signals. The cDNA was confirmed to be that for DAC in tryptic peptides from the purified human liver protein. Highest sequence similarity of DAC was found in a series of prokaryotic esterases encompassing the putative active site. Two extended regions of significant sequence homology with hormone-sensitive lipase and with lipase 2 from Moraxella TA144 were identified, whereas similarity to carboxyl esterases was restricted to the region encompassing the putative active site, indicating that DAC should be classified as esterase. This cDNA provides an important tool to study deacetylation and its effects on the metabolic activation of arylamine and heterocyclic amine carcinogens.
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Affiliation(s)
- M R Probst
- Department of Pharmacology, Biocenter of the University, Basel, Switzerland
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Probst M, Beer M, Beer D, Jenö P, Meyer U, Gasser R. Human liver arylacetamide deacetylase. Molecular cloning of a novel esterase involved in the metabolic activation of arylamine carcinogens with high sequence similarity to hormone-sensitive lipase. J Biol Chem 1994. [DOI: 10.1016/s0021-9258(17)31855-0] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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