Publications by authors named "Margaret G E Peterson"

Background: Comparing cohorts with similar functional and motor status at admission to inpatient rehabilitation may delineate demographics or impairments associated with recovery from lateropulsion, also known as "pusher syndrome," after stroke based on lesion side. The aim of this case-control study was to determine how demographics and severity of stroke impairments at admission to inpatient rehabilitation distinguish patients who recover from lateropulsion from those who do not.

Methods: Patients with admission motor Functional Independence Measure (FIM) scores less than 31 and contralesional lower extremity Fugl-Meyer motor scores less than 19 out of 34 were included.

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Background: Rheumatic diseases in children are associated with significant morbidity and poor health-related quality of life (HRQOL). There is no health-related quality of life (HRQOL) scale available specifically for children with less common rheumatic diseases. These diseases share several features with systemic lupus erythematosus (SLE) such as their chronic episodic nature, multi-systemic involvement, and the need for immunosuppressive medications.

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Background: Lateropulsion, a postural control disorder, delays recovery following hemispheric stroke. The number of stroke impairments may lead to differential recovery rates, depending on the intact systems available for recovery from lateropulsion.

Objective: To study the impact of key postural control deficits on lateropulsion rate of recovery following stroke.

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Objectives: Understanding triggers is important for managing asthma particularly for patients who seek emergency department (ED) care for exacerbations. The objectives of this analysis were to delineate self-reported triggers in ED patients and to assess associations between triggers and asthma knowledge, severity, and quality of life.

Methods: At the time of an ED visit, 296 patients were asked what were their usual asthma triggers based on a checklist of 25 potential items, and what they thought specifically precipitated their current ED visit.

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Objectives: Understanding the events preceding emergency department (ED) asthma visits can guide patient education regarding managing exacerbations and seeking timely care. The objectives of this analysis were to assess time to seeking ED care, self-management of asthma exacerbations, and clinical status on presentation.

Methods: A total of 296 patients was grouped according to time to seeking ED care: ≤1 day (22%), 2-5 days (44%), and >5 days (34%) and was compared for clinical and psychosocial characteristics.

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Literature is lacking on partial IgA deficiency. In this study, the authors propose to describe the clinical manifestations of patients with partial IgA deficiency. Methods.

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Inferior vena cava (IVC) filters were developed for the treatment of venous thromboembolism but in high-risk patients are often used for prophylaxis instead. In the study reported here, we reviewed all the orthopedic surgery cases in which IVC filters were used at our institution in 2005. Charts were analyzed and patients contacted by telephone for long-term follow-up.

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Study Objective: Patients using the emergency department (ED) for asthma may benefit from self-management education. Our goal is to test an educational intervention in 296 asthma ED patients.

Methods: This was a randomized controlled trial with concealed allocation.

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Objective: To examine the clinimetric properties and clinical applicability of published tools for 'quantifying' the degree of lateropulsion or pusher syndrome following stroke.

Data Sources: Search through electronic databases (MEDLINE, EMBASE, CINAHL, Science Citation Index) with the terms lateropulsion, pushing, pusher syndrome, validity, reliability, internal consistency, responsiveness, sensitivity, specificity, posture and stroke. Databases were searched from their inception to October 2008.

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The aim was to assess the outcome of surgery at 5 years after hip fracture. In this prospective study, we analyzed 5-year survival of a cohort of 105 hip fracture patients as a function of preoperative health. The main outcome measurements were the status of the patient, dead or alive, and the SF-36 of their pre-fracture status as recalled during their hospital stay.

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Background: Life events have been shown to be associated with health and illness.

Methods: We studied the number of life events experienced by hip fracture patients, nonfracture rheumatology patients, and community-dwelling asymptomatic residents in the year before interview. Fifty-four hip fracture patients, 63 ambulatory patients, and 115 community-dwelling residents participated in the study.

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In an outpatient rehabilitation setting, both patients' use and therapists' knowledge of complementary and alternative medicine (CAM) varies widely. Based on this observation and a recognition of CAM as an emerging practice area for rehabilitation professionals, it was felt that a thorough and consistent approach to the education and orientation of physical therapists to the world of CAM and integrative care was needed. This special interest paper will describe one center's approach, development, and use of a unique and comprehensive training manual designed to provide both a structured and standardized approach for educating physical therapists about CAM and related therapeutic modalities.

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Reduced bone mineral density (BMD) was sporadically reported in patients with Marfan syndrome. This may or may not place the Marfan patient at increased risk for bone fracture. In comparing the BMDs of our patients with those reported in the literature, it seemed that agreement between values, and hence the degree of osteoporosis or osteopenia reported, was dependent on the instrumentation used.

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We conducted a randomized controlled trial to assess the efficacy and safety of a multiple-component intervention designed to improve functional recovery after hip fracture. One hundred seventy-six patients who underwent surgery for a primary unilateral hip fracture were assigned randomly to receive usual care (control arm, n = 86) or a brief motivational videotape, supportive peer counseling, and high-intensity muscle-strength training (intervention arm, n = 90). Between-group differences on the physical functioning, role-physical, and social functioning domains of the SF-36 were assessed postoperatively at 6 months.

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Objective: To measure functional recovery after hip fracture in the subacute setting.

Background: There are over 340,000 hip fractures that occur in the United States annually. Three out of five hospitalizations attributable to injury among persons over 75 were for fractures.

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Study Design: Thromboembolic disease (TED) after anterior/posterior spinal reconstructions was prospectively evaluated in 66 consecutive patients.

Objective: Determine the incidence of TED after anterior/posterior spinal reconstruction.

Summary Of Background Data: Few studies have examined the rate of TED after potentially high-risk combined anterior/posterior reconstructions.

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Existing technologies have not met the challenge of designing a construct for the repair of focal cartilage defects such that it mimics the mechanical properties of and can integrate with native cartilage. Herein we describe a novel construct consisting of a non-degradable poly-vinyl alcohol (PVA) scaffold to provide long-term mechanical stability, interconnected pores to allow for the infiltration of chondrocytes, and poly-lactic glycolic acid (PLGA) microspheres for the incorporation of growth factors to enhance cellular migration. The objective of this study was to characterize the morphological features and mechanical properties of our porous PVA-PLGA construct as a function of PLGA content.

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Unlabelled: Patients have multiple expectations of THA and TKA. We asked whether preoperative educational classes addressing recovery during the first year could modify patients' expectations of their 12-month postoperative recovery. Participants were enrolled consecutively in two randomized, controlled trials, one for THA (177 patients) and one for TKA (143 patients).

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We assessed the agreement and repeatability of a software package for wear measurement in 19 total hip arthroplasties followed up for 4 to 8 years. Three observers with different levels of expertise (a hip surgeon [O1], a fellow [O2], and a medical student who is a research assistant of the laboratory in which the software was developed [O3]) determined the 2-dimensional wear and wear direction with the Hip Suite software (University of Chicago, Chicago, Ill). For intraobserver and interobserver comparisons, we used intraclass correlation coefficient (ICC) and repeatability.

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A transfer of a best practice model was performed between a new institution in the United Kingdom and a leading orthopedic hospital in the United States. The quality concepts transferred to the UK were surgical and hospital throughput, hospital facility design, an Interdisciplinary Preoperative Patient Education Program, infection control standards, and a standardized rehabilitation model. The new hospital was officially opened in February 2004, and the average length of stay for total hip arthroplasty between February and December 2004 was 6.

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Our aim in this study was to evaluate the prevalence of patella baja after total knee arthroplasty (TKA) using 2 different surgical techniques. Postoperative changes in patella height were measured on serial radiographs of 74 TKAs implanted using a mini-midvastus capsular approach without patella eversion (group 1) and 57 TKAs implanted using a standard medial parapatellar capsular approach with patella eversion (group 2). Preoperative and postoperative Knee Society scores, operative data, and complications were compared.

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Objective: Pediatric systemic lupus erythematosus (SLE) is a chronic fluctuating disease that significantly impacts quality of life (QOL). There is no pediatric SLE-specific health-related QOL (HRQOL) scale. Our objective was to develop and validate a new pediatric SLE-specific HRQOL scale.

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Phosphorylation of the organic matrix proteins of dentin is important for the initiation of mineralization, but its relevance in later mineralization stages is controversial. The objective of this study was to analyze changes in the total matrix phosphate content during dentin development and to identify their origin. Amino acid and total matrix phosphate analyses of microdissected developing mantle and circumpulpal fetal bovine dentin specimens were performed.

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The purpose of this study is to address the safety and efficacy of a warfarin dosing nomogram. Patients undergoing hip or knee arthroplasty were randomized to warfarin dosed by nomogram (n = 106) or by house staff (n = 110) during their hospital stay. The average daily dose of warfarin was 4.

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Single-stage bilateral total hip arthroplasty can be performed with a completely new sterile setup for the second side or with the same instruments for both sides. The latter could theoretically lead to a higher prevalence of infection in the second side. We retrospectively determined the prevalence of deep infection during the first postoperative year in 271 consecutive patients operated on with different sterile setups (group 1) and 289 patients operated on with the same setup (group 2).

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