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Garg AX, Arnold JB, Cuerden M, Dipchand C, Feldman LS, Gill JS, Karpinski M, Klarenbach S, Knoll GA, Lok C, Miller M, Monroy-Cuadros M, Nguan C, Prasad GVR, Sontrop JM, Storsley L, Boudville N. The Living Kidney Donor Safety Study: Protocol of a Prospective Cohort Study. Can J Kidney Health Dis 2022; 9:20543581221129442. [PMID: 36325263 PMCID: PMC9619271 DOI: 10.1177/20543581221129442] [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: 04/02/2022] [Accepted: 08/11/2022] [Indexed: 11/14/2022] Open
Abstract
Background Living kidney donation is considered generally safe in healthy individuals; however, there is a need to better understand the long-term effects of donation on blood pressure and kidney function. Objectives To determine the risk of hypertension in healthy, normotensive adults who donate a kidney compared with healthy, normotensive non-donors with similar indicators of baseline health. We will also compare the 2 groups on the rate of decline in kidney function, the risk of albuminuria, and changes in health-related quality of life. Design Participants and Setting Prospective cohort study of 1042 living kidney donors recruited before surgery from 17 transplant centers (12 in Canada and 5 in Australia) between 2004 and 2014. Non-donor participants (n = 396) included relatives or friends of the donor, or donor candidates who were ineligible to donate due to blood group or cross-match incompatibility. Follow-up will continue until 2021, and the main analysis will be performed in 2022. The anticipated median (25th, 75th percentile, maximum) follow-up time after donation is 7 years (6, 8, 15). Measurements Donors and non-donors completed the same schedule of measurements at baseline and follow-up (non-donors were assigned a simulated nephrectomy date). Annual measurements were obtained for blood pressure, estimated glomerular filtration rate (eGFR), albuminuria, patient-reported health-related quality of life, and general health. Outcomes Incident hypertension (a systolic/diastolic blood pressure ≥ 140/90 mm Hg or receipt of anti-hypertensive medication) will be adjudicated by a physician blinded to the participant's donation status. We will assess the rate of change in eGFR starting from 12 months after the nephrectomy date and the proportion who develop an albumin-to-creatinine ratio ≥3 mg/mmol (≥30 mg/g) in follow-up. Health-related quality of life will be assessed using the 36-item RAND health survey and the Beck Anxiety and Depression inventories. Limitations Donation-attributable hypertension may not manifest until decades after donation. Conclusion This prospective cohort study will estimate the attributable risk of hypertension and other health outcomes after living kidney donation.
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Affiliation(s)
- Amit X. Garg
- Victoria Hospital, London Health Sciences Centre, ON, Canada,Amit X. Garg, Victoria Hospital, London Health Sciences Centre, 800 Commissioners Road East, ELL-200, London, ON N6A 5W9, Canada.
| | | | - Meaghan Cuerden
- Victoria Hospital, London Health Sciences Centre, ON, Canada
| | | | | | - John S. Gill
- The University of British Columbia, Vancouver, Canada
| | | | | | - Greg A. Knoll
- Department of Nephrology, Department of Medicine, The Ottawa Hospital and University of Ottawa, ON, Canada
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Arnold JB, Bowen CJ, Chapman LS, Gates LS, Golightly YM, Halstead J, Hannan MT, Menz HB, Munteanu SE, Paterson KL, Roddy E, Siddle HJ, Thomas MJ. International Foot and Ankle Osteoarthritis Consortium review and research agenda for diagnosis, epidemiology, burden, outcome assessment and treatment. Osteoarthritis Cartilage 2022; 30:945-955. [PMID: 35176480 PMCID: PMC10464637 DOI: 10.1016/j.joca.2022.02.603] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/25/2022] [Accepted: 02/03/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To summarise the available evidence relating to the diagnosis, epidemiology, burden, outcome assessment and treatment of foot and ankle osteoarthritis (OA) and to develop an agenda to guide future research. METHOD Members of the International Foot and Ankle Osteoarthritis Consortium compiled a narrative summary of the literature which formed the basis of an interactive discussion at the Osteoarthritis Research Society International World Congress in 2021, during which a list of 24 research agenda items were generated. Following the meeting, delegates were asked to rank the research agenda items on a 0 to 100 visual analogue rating scale (0 = not at all important to 100 = extremely important). Items scoring a mean of 70 or above were selected for inclusion. RESULTS Of the 45 delegates who attended the meeting, 31 contributed to the agenda item scoring. Nineteen research agenda items met the required threshold: three related to diagnosis, four to epidemiology, four to burden, three to outcome assessment and five to treatment. CONCLUSIONS Key knowledge gaps related to foot and ankle OA were identified, and a comprehensive agenda to guide future research planning was developed. Implementation of this agenda will assist in improving the understanding and clinical management of this common and disabling, yet relatively overlooked condition.
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Affiliation(s)
- J B Arnold
- IIMPACT in Health, Allied Health and Human Performance, University of South Australia, Adelaide, South Australia, 5000, Australia
| | - C J Bowen
- School of Health Sciences, University of Southampton, Building 67, University Road, Southampton, SO17 1BJ, UK; Centre for Sport, Exercise and Osteoarthritis Research Versus Arthritis, University of Southampton, Southampton, SO17 1BJ, UK
| | - L S Chapman
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - L S Gates
- School of Health Sciences, University of Southampton, Building 67, University Road, Southampton, SO17 1BJ, UK; Centre for Sport, Exercise and Osteoarthritis Research Versus Arthritis, University of Southampton, Southampton, SO17 1BJ, UK
| | - Y M Golightly
- Department of Epidemiology, Gillings School of Global Public Health, Thurston Arthritis Research Center, University of North Carolina at Chapel Hill, 3330 Thurston Building, CB 7280, Chapel Hill, NC 27599, USA
| | - J Halstead
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, LS2 9JT, UK; Podiatry Services, Leeds Community Healthcare NHS Trust, Leeds, LS6 1PF, UK
| | - M T Hannan
- Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Beth Israel Deaconess Medical Center, And Harvard Medical School, Boston, MA, 02108, USA
| | - H B Menz
- School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia; Primary Care Centre Versus Arthritis, School of Medicine, Keele University, Keele, Staffordshire, ST5 5BG, UK.
| | - S E Munteanu
- School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - K L Paterson
- Centre for Health, Exercise and Sports Medicine, School of Health Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - E Roddy
- Primary Care Centre Versus Arthritis, School of Medicine, Keele University, Keele, Staffordshire, ST5 5BG, UK; Haywood Academic Rheumatology Centre, Midlands Partnership NHS Foundation Trust, Haywood Hospital, Burslem, Staffordshire, ST6 7AG, UK
| | - H J Siddle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, LS2 9JT, UK
| | - M J Thomas
- Primary Care Centre Versus Arthritis, School of Medicine, Keele University, Keele, Staffordshire, ST5 5BG, UK; Haywood Academic Rheumatology Centre, Midlands Partnership NHS Foundation Trust, Haywood Hospital, Burslem, Staffordshire, ST6 7AG, UK
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Garcia-Ochoa C, Feldman LS, Nguan C, Monroy-Caudros M, Arnold JB, Barnieh L, Boudville N, Cuerden MS, Dipchand C, Gill JS, Karpinski M, Klarenbach S, Knoll G, Lok CE, Miller M, Prasad GVR, Sontrop JM, Storsley L, Garg AX. Impact of Perioperative Complications on Living Kidney Donor Health-Related Quality of Life and Mental Health: Results From a Prospective Cohort Study. Can J Kidney Health Dis 2021; 8:20543581211037429. [PMID: 34394947 PMCID: PMC8361543 DOI: 10.1177/20543581211037429] [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: 04/19/2021] [Accepted: 07/05/2021] [Indexed: 11/23/2022] Open
Abstract
Background: Although living kidney donation is safe, some donors experience perioperative complications. Objective: This study explored how perioperative complications affected donor-reported health-related quality of life, depression, and anxiety. Design: This research was a conducted as a prospective cohort study. Setting: Twelve transplant centers across Canada. Patients: A total of 912 living kidney donors were included in this study. Measurements: Short Form 36 health survey, Beck Depression Inventory and Beck Anxiety Inventory. Methods: Living kidney donors were prospectively enrolled predonation between 2009 to 2014. Donor perioperative complications were graded using the Clavien-Dindo classification system. Mental and physical health-related quality of life was assessed with the 3 measurements; measurements were taken predonation and at 3- and 12-months postdonation. Results: Seventy-four donors (8%) experienced a perioperative complication; most were minor (n = 67 [91%]), and all minor complications resolved before hospital discharge. The presence (versus absence) of a perioperative complication was associated with lower mental health-related quality of life and higher depression symptoms 3-month postdonation; neither of these differences persisted at 12-month. Perioperative complications were not associated with any changes in physical health-related quality of life or anxiety 3-month postdonation. Limitations: Minor complications may have been missed and information on complications postdischarge were not collected. No minimal clinically significant change has been defined for kidney donors across the 3 measurements. Conclusions: These findings highlight a potential opportunity to better support the psychosocial needs of donors who experience perioperative complications in the months following donation. Trial registration: NCT00319579 and NCT00936078.
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Affiliation(s)
| | - Liane S Feldman
- Department of Surgery, McGill University Health Centre, Montreal, QC, Canada
| | - Chris Nguan
- The University of British Columbia, Vancouver, Canada
| | | | | | | | - Neil Boudville
- Medical School, Department of Renal Medicine, Sir Charles Gairdner Hospital, The University of Western Australia, Perth, Australia
| | | | | | - John S Gill
- The University of British Columbia, Vancouver, Canada
| | | | | | - Greg Knoll
- Division of Nephrology, Department of Medicine, University of Ottawa, ON, Canada
| | | | - Matthew Miller
- Division of Nephrology and Transplantation, St. Joseph's Healthcare Hamilton, McMaster University, Hamilton, ON, Canada
| | | | - Jessica M Sontrop
- Department of Epidemiology & Biostatistics, Western University, London, ON, Canada
| | | | - Amit X Garg
- Department of Epidemiology & Biostatistics, Western University, London, ON, Canada.,Department of Medicine, Western University, London, ON, Canada.,Institute for Clinical Evaluative Sciences, Toronto, ON, Canada
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Lithgow MJ, Munteanu SE, Buldt AK, Arnold JB, Kelly LA, Menz HB. Foot structure and lower limb function in individuals with midfoot osteoarthritis: a systematic review. Osteoarthritis Cartilage 2020; 28:1514-1524. [PMID: 32889086 DOI: 10.1016/j.joca.2020.08.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/28/2020] [Accepted: 08/24/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine how foot structure and lower limb function differ between individuals with and without midfoot osteoarthritis (OA). DESIGN Electronic databases were searched from inception until May 2020. To be eligible, studies needed to (1) include participants with radiographically confirmed midfoot OA, with or without midfoot symptoms, (2) include a control group of participants without radiographic midfoot OA or without midfoot symptoms, and (3) report outcomes of foot structure, alignment, range of motion or any measures of lower limb function during walking. Screening and data extraction were performed by two independent assessors, with disagreements resolved by a third independent assessor. The methodological quality of included studies was assessed using the National Institutes of Health Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies. RESULTS A total of 1,550 records were screened by title and abstract and 11 met the inclusion criteria. Quantitative synthesis indicated that individuals who had midfoot OA had a more pronated foot posture, greater first ray mobility, less range of motion in the subtalar joint and first metatarsophalangeal joints, longer central metatarsals and increased peak plantar pressures, pressure time integrals and contact times in the heel and midfoot during walking. Meta-analysis could not be performed as the data were not sufficiently homogenous. CONCLUSIONS There are several differences in foot structure and lower limb function between individuals with and without midfoot OA. Future research with more consistent case definitions and detailed biomechanical models would further our understanding of potential mechanisms underlying the development of midfoot OA.
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Affiliation(s)
- M J Lithgow
- Discipline of Podiatry and La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia; School of Health, Medical and Applied Sciences, Central Queensland University, Sydney, New South Wales, 2000, Australia.
| | - S E Munteanu
- Discipline of Podiatry and La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - A K Buldt
- Discipline of Podiatry and La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia
| | - J B Arnold
- IIMPACT in Health, Allied Health & Human Performance, University of South Australia, Adelaide, South Australia, 5000, Australia; Alliance for Research in Exercise, Nutrition and Activity (ARENA), Allied Health & Human Performance, University of South Australia, Adelaide, South Australia, 5000, Australia
| | - L A Kelly
- School of Human Movement & Nutrition Sciences, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - H B Menz
- Discipline of Podiatry and La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, 3086, Australia
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Thewlis D, Bahl JS, Fraysse F, Curness K, Arnold JB, Taylor M, Callary S, Solomon LB. Objectively measured 24-hour activity profiles before and after total hip arthroplasty. Bone Joint J 2019; 101-B:415-425. [PMID: 30929490 DOI: 10.1302/0301-620x.101b4.bjj-2018-1240.r1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS The purpose of this exploratory study was to investigate if the 24-hour activity profile (i.e. waking activities and sleep) objectively measured using wrist-worn accelerometry of patients scheduled for total hip arthroplasty (THA) improves postoperatively. PATIENTS AND METHODS A total of 51 THA patients with a mean age of 64 years (24 to 87) were recruited from a single public hospital. All patients underwent THA using the same surgical approach with the same prosthesis type. The 24-hour activity profiles were captured using wrist-worn accelerometers preoperatively and at 2, 6, 12, and 26 weeks postoperatively. Patient-reported outcomes (Hip Disability and Osteoarthritis Outcome Score (HOOS)) were collected at all timepoints except two weeks postoperatively. Accelerometry data were used to quantify the intensity (sedentary, light, moderate, and vigorous activities) and frequency (bouts) of activity during the day and sleep efficiency. The analysis investigated changes with time and differences between Charnley class. RESULTS Patients slept or were sedentary for a mean of 19.5 hours/day preoperatively and the 24-hour activity pattern did not improve significantly postoperatively. Outside of sleep, the patients spent their time in sedentary activities for a mean of 620 minutes/day (sd 143) preoperatively and 641 minutes/day (sd 133) six months postoperatively. No significant improvements were observed for light, moderate, and vigorous intensity activities (p = 0.140, p = 0.531, and p = 0.407, respectively). Sleep efficiency was poor (< 85%) at all timepoints. There was no postoperative improvement in sleep efficiency when adjusted for medications (p > 0.05). Patient-reported outcome measures showed a significant improvement with time in all domains when compared with preoperative levels. There were no differences with Charnley class at six months postoperatively. However, Charnley class C patients were more sedentary at two weeks postoperatively when compared with Charnley class A patients (p < 0.05). There were no further differences between Charnley classifications. CONCLUSION This study describes the 24-hour activity profile of THA patients for the first time. Prior to THA, patients in this cohort were inactive and slept poorly. This cohort shows no improvement in 24-hour activity profiles at six months postoperative. Cite this article: Bone Joint J 2019;101-B:415-425.
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Affiliation(s)
- D Thewlis
- Centre for Orthopaedic and Trauma Research, The University of Adelaide, Adelaide, Australia.,Department of Orthopaedics and Trauma, Royal Adelaide Hospital, Adelaide, Australia
| | - J S Bahl
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences and Sansom Institute for Health Research, University of South Australia, Adelaide, Australia
| | - F Fraysse
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences and Sansom Institute for Health Research, University of South Australia, Adelaide, Australia
| | - K Curness
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences and Sansom Institute for Health Research, University of South Australia, Adelaide, Australia
| | - J B Arnold
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences and Sansom Institute for Health Research, University of South Australia, Adelaide, Australia
| | - M Taylor
- Medical Device Research Institute, College of Science and Engineering, Flinders University, Adelaide, Australia
| | - S Callary
- Centre for Orthopaedic and Trauma Research, The University of Adelaide, Adelaide, Australia.,Department of Orthopaedics and Trauma, Royal Adelaide Hospital, Adelaide, Australia
| | - L B Solomon
- Centre for Orthopaedic and Trauma Research, The University of Adelaide, Adelaide, Australia.,Department of Orthopaedics and Trauma, Royal Adelaide Hospital, Adelaide, Australia
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Arnold JB, Marshall M, Thomas MJ, Redmond AC, Menz HB, Roddy E. Midfoot osteoarthritis: potential phenotypes and their associations with demographic, symptomatic and clinical characteristics. Osteoarthritis Cartilage 2019; 27:659-666. [PMID: 30660723 DOI: 10.1016/j.joca.2018.12.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 07/25/2018] [Revised: 12/20/2018] [Accepted: 12/23/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate the demographic, symptomatic, clinical and structural foot characteristics associated with potential phenotypes of midfoot osteoarthritis (OA). DESIGN Cross-sectional study of 533 community-dwelling adults aged ≥50 years with foot pain in the past year. Health questionnaires and clinical assessments of symptoms, foot structure and function were undertaken. Potential midfoot OA phenotypes were defined by the pattern of radiographic joint involvement affecting either the medial midfoot (talonavicular, navicular-1st cuneiform, or cuneiform-1st metatarsal joint), central midfoot (2nd cuneiform-metatarsal joint), or both medial and central midfoot joints. Multivariable regression models with generalised estimating equations were used to investigate the associations between patterns of midfoot joint involvement and symptomatic, clinical and structural characteristics compared to those with no or minimal midfoot OA. RESULTS Of 879 eligible feet, 168 had medial midfoot OA, 103 central midfoot OA, 76 both medial and central midfoot OA and 532 no/minimal OA. Having both medial and central midfoot OA was associated with higher pain scores, dorsally-located midfoot pain (OR 2.54, 95%CI 1.45, 4.45), hallux valgus (OR 1.76, 95%CI 1.02, 3.05), flatter foot posture (β 0.44, 95%CI 0.12, 0.77), lower medial arch height (β 0.02, 95%CI 0.01, 0.03) and less subtalar inversion and 1st MTPJ dorsiflexion. Isolated medial midfoot OA and central midfoot OA had few distinguishing clinical characteristics. CONCLUSIONS Distinct phenotypes of midfoot OA appear challenging to identify, with substantial overlap in symptoms and clinical characteristics. Phenotypic differences in symptoms, foot posture and function were apparent in this study only when both the medial and central midfoot were involved.
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Affiliation(s)
- J B Arnold
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; National Institute for Health Research (NIHR), Leeds Biomedical Research Centre, Leeds, UK; Alliance for Research in Exericse, Nutrition & Activity (ARENA) and School of Health Sciences, University of South Australia, Adelaide, Australia.
| | - M Marshall
- Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, Staffordshire, UK
| | - M J Thomas
- Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, Staffordshire, UK; Haywood Academic Rheumatology Centre, Midlands Partnership NHS Foundation Trust, Haywood Hospital, Staffordshire, UK
| | - A C Redmond
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; National Institute for Health Research (NIHR), Leeds Biomedical Research Centre, Leeds, UK
| | - H B Menz
- Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, Staffordshire, UK; Discipline of Podiatry and La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Melbourne, Australia
| | - E Roddy
- Arthritis Research UK Primary Care Centre, Research Institute for Primary Care and Health Sciences, Keele University, Staffordshire, UK; Haywood Academic Rheumatology Centre, Midlands Partnership NHS Foundation Trust, Haywood Hospital, Staffordshire, UK
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Przech S, Garg AX, Arnold JB, Barnieh L, Cuerden MS, Dipchand C, Feldman L, Gill JS, Karpinski M, Knoll G, Lok C, Miller M, Monroy M, Nguan C, Prasad GVR, Sarma S, Sontrop JM, Storsley L, Klarenbach S. Financial Costs Incurred by Living Kidney Donors: A Prospective Cohort Study. J Am Soc Nephrol 2018; 29:2847-2857. [PMID: 30404908 DOI: 10.1681/asn.2018040398] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 10/07/2018] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Approximately 40% of the kidneys for transplant worldwide come from living donors. Despite advantages of living donor transplants, rates have stagnated in recent years. One possible barrier may be costs related to the transplant process that potential willing donors may incur for travel, parking, accommodation, and lost productivity. METHODS To better understand and quantify the financial costs incurred by living kidney donors, we conducted a prospective cohort study, recruiting 912 living kidney donors from 12 transplant centers across Canada between 2009 and 2014; 821 of them completed all or a portion of the costing survey. We report microcosted total, out-of-pocket, and lost productivity costs (in 2016 Canadian dollars) for living kidney donors from donor evaluation start to 3 months after donation. We examined costs according to (1) the donor's relationship with their recipient, including spousal (donation to a partner), emotionally related nonspousal (friend, step-parent, in law), or genetically related; and (2) donation type (directed, paired kidney, or nondirected). RESULTS Living kidney donors incurred a median (75th percentile) of $1254 ($2589) in out-of-pocket costs and $0 ($1908) in lost productivity costs. On average, total costs were $2226 higher in spousal compared with emotionally related nonspousal donors (P=0.02) and $1664 higher in directed donors compared with nondirected donors (P<0.001). Total costs (out-of-pocket and lost productivity) exceeded $5500 for 205 (25%) donors. CONCLUSIONS Our results can be used to inform strategies to minimize the financial burden of living donation, which may help improve the donation experience and increase the number of living donor kidney transplants.
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Affiliation(s)
- Sebastian Przech
- Department of Medicine and Department of Clinical Epidemiology and Biostatistics, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Amit X Garg
- Department of Medicine and Department of Clinical Epidemiology and Biostatistics, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Jennifer B Arnold
- Department of Medicine and Department of Clinical Epidemiology and Biostatistics, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Lianne Barnieh
- Department of Medicine and Department of Clinical Epidemiology and Biostatistics, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Meaghan S Cuerden
- Department of Medicine and Department of Clinical Epidemiology and Biostatistics, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Christine Dipchand
- Division of Nephrology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Liane Feldman
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - John S Gill
- Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Martin Karpinski
- Department of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Greg Knoll
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Charmaine Lok
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Matthew Miller
- Division of Nephrology and Transplantation, McMaster University, Hamilton, Ontario, Canada
| | - Mauricio Monroy
- Department of Surgery, Foothills Medical Center, University of Calgary, Calgary, Alberta, Canada
| | - Chris Nguan
- Division of Nephrology, University of British Columbia, Vancouver, British Columbia, Canada
| | - G V Ramesh Prasad
- Division of Nephrology, St. Michael's Hospital, Toronto, Ontario, Canada; and
| | - Sisira Sarma
- Department of Medicine and Department of Clinical Epidemiology and Biostatistics, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Jessica M Sontrop
- Department of Medicine and Department of Clinical Epidemiology and Biostatistics, London Health Sciences Centre, Western University, London, Ontario, Canada
| | - Leroy Storsley
- Department of Medicine, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Scott Klarenbach
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
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Arnold JB. Lateral wedge insoles for people with medial knee osteoarthritis: one size fits all, some or none? Osteoarthritis Cartilage 2016; 24:193-5. [PMID: 26432985 DOI: 10.1016/j.joca.2015.09.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/08/2015] [Accepted: 09/22/2015] [Indexed: 02/02/2023]
Affiliation(s)
- J B Arnold
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), Sansom Institute for Health Research, School of Health Sciences, University of South Australia, Adelaide, Australia.
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Arnold JB, Liow JS, Schaper KA, Stern JJ, Sled JG, Shattuck DW, Worth AJ, Cohen MS, Leahy RM, Mazziotta JC, Rottenberg DA. Qualitative and quantitative evaluation of six algorithms for correcting intensity nonuniformity effects. Neuroimage 2001; 13:931-43. [PMID: 11304088 DOI: 10.1006/nimg.2001.0756] [Citation(s) in RCA: 126] [Impact Index Per Article: 5.5] [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: 12/15/2022] Open
Abstract
The desire to correct intensity nonuniformity in magnetic resonance images has led to the proliferation of nonuniformity-correction (NUC) algorithms with different theoretical underpinnings. In order to provide end users with a rational basis for selecting a given algorithm for a specific neuroscientific application, we evaluated the performance of six NUC algorithms. We used simulated and real MRI data volumes, including six repeat scans of the same subject, in order to rank the accuracy, precision, and stability of the nonuniformity corrections. We also compared algorithms using data volumes from different subjects and different (1.5T and 3.0T) MRI scanners in order to relate differences in algorithmic performance to intersubject variability and/or differences in scanner performance. In phantom studies, the correlation of the extracted with the applied nonuniformity was highest in the transaxial (left-to-right) direction and lowest in the axial (top-to-bottom) direction. Two of the six algorithms demonstrated a high degree of stability, as measured by the iterative application of the algorithm to its corrected output. While none of the algorithms performed ideally under all circumstances, locally adaptive methods generally outperformed nonadaptive methods.
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Affiliation(s)
- J B Arnold
- Neurology Service, PET Imaging Center, Minneapolis VA Medical Center, One Veterans Drive, Minneapolis, Minnesota 55417, USA
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Frutiger SA, Strother SC, Anderson JR, Sidtis JJ, Arnold JB, Rottenberg DA. Multivariate predictive relationship between kinematic and functional activation patterns in a PET study of visuomotor learning. Neuroimage 2000; 12:515-27. [PMID: 11034859 DOI: 10.1006/nimg.2000.0644] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [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: 11/22/2022] Open
Abstract
Imaging studies of visuomotor learning have reported practice-related activation in brain regions mediating sensorimotor functions. However, development and testing of functional motor learning models, based on the relationship between imaging and behavioral measures, is complicated by the multidimensional nature of motoric control. In the present study, multivariate techniques were used to analyze [15O]water PET and kinematic correlates of learning in a visuomotor tracing task. Fourteen subjects traced a geometric form over a series of eight tracing trials, preceded and followed by baseline trials in which they passively viewed the geometric form. Simultaneous evaluation of multiple behavioral measures indicated that performance improvement was most strongly associated with a global performance measure and least strongly associated with measures of fine motor control. Results of three independent analytic techniques (i.e., intertrial correlation matrices, power function modeling, iterative canonical variate analysis) indicated that imaging and behavioral measures were most closely related on early learning trials. Performance improvement was associated with covarying increases in normalized activity among superior parietal, postcentral gyrus, and premotor regions and covarying decreases in normalized activity among cerebellar, inferior parietal, pallidal, and medial occipital regions. These findings suggest that performance improvement may be associated with increased activation in neural systems previously implicated in visually guided reaching and decreased activation in neural systems previously implicated in attentive visuospatial processing.
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Affiliation(s)
- S A Frutiger
- Neurology Department, University of Minnesota, Minneapolis, MN,USA
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Arnold JB, Kraig RP, Rottenberg DA. In vivo measurement of regional brain and tumor pH using [14C]dimethyloxazolidinedione and quantitative autoradiography. II: Characterization of the extracellular fluid compartment using pH-sensitive microelectrodes and [14C]sucrose. J Cereb Blood Flow Metab 1986; 6:435-40. [PMID: 3733903 PMCID: PMC3047405 DOI: 10.1038/jcbfm.1986.76] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We measured the extracellular (interstitial) pH (pHe) of RG-2 rat gliomas using H+-sensitive microelectrodes and estimated the volume of tumor extracellular space based on the tissue-plasma ratio of [14C]sucrose. The average RG-2 pHe was 7.63 +/- 0.15 (mean +/- SD, n = 6), whereas the average pHe of contralateral brain tissue was 7.34 +/- 0.10 (n = 3) and arterial pH was 7.36 +/- 0.02. RG-2 extracellular space water volume was estimated to be 0.3 ml water/g tissue. In separate experiments in normal, nontumored rats, intracellular pH (pHi) was calculated for nine gray and white matter regions based on measurements of tissue and plasma [14C]dimethyloxazolidinedione concentration. pHi values ranged from 6.80 to 6.94, and no consistent gray-white differences were observed. Our data suggest that tumor pHi is not more acidic than that of normal brain tissue and that the observed alkalinity of primary brain tumors is due to the presence of a large alkaline extracellular space.
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Arnold JB, Junck L, Rottenberg DA. In vivo measurement of regional brain and tumor pH using [14C]dimethyloxazolidinedione and quantitative autoradiography. J Cereb Blood Flow Metab 1985; 5:369-75. [PMID: 4030915 DOI: 10.1038/jcbfm.1985.51] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Using [14C]dimethyloxazolidinedione ([14C]-DMO) and quantitative autoradiography, we estimated tissue pH (pHt) and intracellular pH (pHi) in nine regions of the normal rat brain and in intracerebrally implanted RG-2 gliomas. Calculations of regional pHt, based on equilibrium tissue and arterial plasma [14C]DMO concentration, ranged from 6.83 to 6.94; pHi, calculated assuming an extracellular water volume of 0.15 ml/g for gray matter and 0.11 ml/g for white matter, ranged from 6.61 to 6.78. No consistent difference was found in pHt or pHi between white and gray matter regions. Tumor tissue water content was determined by drying to constant weight, and extracellular space water volume (Ve) was estimated with [14C]sucrose in nephrectomized rats using quantitative autoradiography. Tumor pHt ranged from 7.08 to 7.18. For Ve = 0.17 (measured), pHi was 6.94-7.06; for Ve = 0.30 (assumed), the corresponding range for pHi was 6.63-6.90. Thus, the RG-2 glioma is not more "acidic" than adjacent brain tissue and its "alkaline" pHt probably reflects a large extracellular water content and plasma-like extracellular pH.
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Abstract
A low-dose maintenance schedule of Adriamycin was evaluated in six children whose metastatic solid tumors regressed following toxic induction therapy with Adriamycin. Three of these children are now disease-free more than one year following discontinuation of therapy. Adriamycin can be given on a low-dose maintenance schedule free from alopecia, fever, stomatitis, myelosuppression and recognizable cardiomyopathy. Further studies of similar schedules are warranted.
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Arnold JB, Steger PJ, Saito TT. Tool feed influence on the machinability of CO(2) laser optics. Appl Opt 1975; 14:1777-1782. [PMID: 20154919 DOI: 10.1364/ao.14.001777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Influence of tool feed on reflectivity of diamond-machined surfaces was evaluated using materials (gold, silver, and copper) from which CO(2) laser optics are primarily produced. Fifteen specimens were machined by holding all machining parameters constant, except tool feed. Tool feed was allowed to vary by controlled amounts from one evaluation zone (or part) to another. Past experience has verified that the quality of a diamond-machined surface is not a function of the cutting velocity; therefore, this experiment was conducted on the basis that a variation in cutting velocity was not an influencing factor on the diamondturning process. Inspection results of the specimens indicated that tool feeds significantly higher than 5.1 micro/rev (200 microin./rev) produced detrimental effects on the machined surfaces. In some cases, at feeds as high as 13 microm/rev (500 microin./rev), visible scoring was evident. Those surfaces produced with tool feeds less than 5.1 microm/rev had little difference in reflectivity. Measurements indicat d that their reflectivity existed in a range from 96.7% to 99.3% at 10.6 microm.
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Komp DM, Vaden EB, Stevens D, Arnold JB. Childhood leukemia--perspectives 1974. Va Med Mon (1918) 1974; 101:132-4 passim. [PMID: 4812539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Arnold JB, Komp DM, Peterson WH, Johnston CL, dos Santos-Neto JG. The cytocentrifuge. A useful tool in cancer diagnosis. A significant increase in the speed and accuracy in cytological diagnosis is possible with the cytocentrifuge. Va Med Mon (1918) 1973; 100:708-12. [PMID: 4731500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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