Andrea Townson

Measurement properties of the CESD scale among individuals with spinal cord injury

Background:Depression is common after spinal cord injury (SCI), yet it can be difficult and costly to diagnose. Screening tools such as the Center for Epidemiological Studies Depression scale (CESD) can assist with case identification; however, insufficient knowledge of their measurement properties exists to use them in the SCI population.Objectives:To assess the reliability and validity of the CESD-20 and the CESD-10.Setting:Tertiary care centre in Vancouver, British Columbia, Canada.Methods:A 2-week retest study of 47 individuals with traumatic SCI. Subjects ⩾19, who had their SCI for ⩾1 year and had American Spinal Injury Association Impairment scale ranking of A or B. Short Form-36 (SF-36) subscales and a visual analogue scale for fatigue (VAS-F) were used to assess validity using Pearsons correlations coefficients. Internal consistency was assessed using Cronbachs alpha, retest reliability was assessed using intraclass correlation coefficients (ICCs) and Bland–Altman plots. Normative data are presented based on key demographic and clinical factors.Results:Cronbachs alpha was 0.91 and 0.86 and retest reliability was ICC=0.87 (95% confidence interval (CI) 0.79–0.93) and ICC=0.85 (95% CI 0.75–0.92) for the CESD-20 and CESD-10, respectively. Minimal bias was evident based on the Bland–Altman plots. The strongest correlations were with outcomes representing mental health (r=−0.71), vitality (r=−0.60) and the VAS-F (r=0.57). The weakest correlation was with the physical function score of the SF-36 (r=−0.37).Conclusion:The CESD-20 and CESD-10 are quick and easy to use. This study provides evidence in support of the reliability and validity.

The Rick Hansen Spinal Cord Injury Registry (RHSCIR): a national patient-registry.

Study design:Development of a prospective patient registry.Objective:To develop a patient registry for persons with traumatic spinal cord injuries (SCI), which can be used to answer research questions and improve patient outcomes.Setting:Nine provinces in Canada.Methods:The Rick Hansen Spinal Cord Injury Registry (RHSCIR) is part of the Translational Research Program of the Rick Hansen Institute. The launch of RHSCIR in 2004 heralded the initiation of the first nation-wide SCI patient registry within Canada. Currently, RHSCIR is being implemented in 14 cities located in 9 provinces, and there are over 1500 individuals who have sustained an acute traumatic SCI registered to date. Data are captured from the pre-hospital, acute and rehabilitation phases of care, and participants are followed in the community at 1, 2, 5 and then every 5 years post-injury.Results:During the development of RHSCIR, there were many challenges that were overcome in selecting data elements, establishing the governance structure, and creating a patient privacy and confidentiality framework across multiple provincial jurisdictions. The benefits of implementing a national registry are now being realized. The collection of an internationally standardized set of clinical information is helping inform clinicians of beneficial interventions and encouraging a shift towards evidence-based practices. Furthermore, through RHSCIR, a network is forming amongst SCI clinicians and researchers, which is fostering new collaborations and the launch of multi-center clinical trials.Conclusions:For networks that are establishing SCI registries, the experiences and lessons learned in the development of RHSCIR may provide useful insights and guidance.

The Influence of Time from Injury to Surgery on Motor Recovery and Length of Hospital Stay in Acute Traumatic Spinal Cord Injury: An Observational Canadian Cohort Study

To determine the influence of time from injury to surgery on neurological recovery and length of stay (LOS) in an observational cohort of individuals with traumatic spinal cord injury (tSCI), we analyzed the baseline and follow-up motor scores of participants in the Rick Hansen Spinal Cord Injury Registry to specifically assess the effect of an early (less than 24 h from injury) surgical procedure on motor recovery and on LOS. One thousand four hundred and ten patients who sustained acute tSCIs with baseline American Spinal Injury Association Impairment Scale (AIS) grades A, B, C, or D and were treated surgically were analyzed to determine the effect of the timing of surgery (24, 48, or 72 h from injury) on motor recovery and LOS. Depending on the distribution of data, we used different types of generalized linear models, including multiple linear regression, gamma regression, and negative binomial regression. Persons with incomplete AIS B, C, and D injuries from C2 to L2 demonstrated motor recovery improvement of an additional 6.3 motor points (SE=2.8 p<0.03) when they underwent surgical treatment within 24 h from the time of injury, compared with those who had surgery later than 24 h post-injury. This beneficial effect of early surgery on motor recovery was not seen in the patients with AIS A complete SCI. AIS A and B patients who received early surgery experienced shorter hospital LOS. While the issues of when to perform surgery and what specific operation to perform remain controversial, this work provides evidence that for an incomplete acute tSCI in the cervical, thoracic, or thoracolumbar spine, surgery performed within 24 h from injury improves motor neurological recovery. Early surgery also reduces LOS.

Measuring Fatigue in Persons with Spinal Cord Injury

OBJECTIVE To evaluate the psychometric properties of the Fatigue Severity Scale (FSS) in persons with spinal cord injury (SCI). DESIGN A 2-week methodologic study was conducted to assess the internal consistency, reliability, and construct validity of the FSS. SETTING A tertiary spinal cord rehabilitation facility. PARTICIPANTS Forty-eight community-living subjects at least 1 year post-SCI with American Spinal Injury Association (ASIA) grade A or B SCI and no medical conditions causing fatigue. The sample was predominantly male (n=31 [65%]) with tetraplegia (n=26 [54%]) and ASIA grade A injuries (n=30 [63%]). The average duration since injury was 14.9 years. INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES The ASIA Impairment Scale, the FSS, a visual analog scale for fatigue (VAS-F), the vitality scale of the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36), and the Center for Epidemiologic Studies Depression Scale (CES-D). RESULTS Mean FSS score +/- standard deviation at baseline was 4.4+/-1.4, with 54% (n=26) scoring greater than 4. The internal consistency of the FSS was excellent (Cronbach alpha=.89). Two-week test-retest reliability was adequate (intraclass correlation coefficient, .84; 95% confidence interval, .74-.90). The magnitude of the relationship was as hypothesized for the VAS-F (r=.67) and CES-D (r=.58) and lower than hypothesized for the vitality subscore (r=-.48) of the SF-36. CONCLUSIONS The FSS has acceptable reliability with regard to internal consistency, test-retest reliability, and validity in persons with motor complete SCI.

Clinical correlates of fatigue in spinal cord injury.

Study design:Retrospective chart review.Objectives:To determine the prevalence of fatigue in an outpatient spinal cord injury population and to examine the clinical variables contributing to that fatigue.Setting:GF Strong Rehabilitation Centre, Vancouver, British Columbia, Canada.Methods:Medical charts of 76 individuals admitted to the GF Strong Outpatient SCI Program between December 2004 and December 2005 were reviewed. Data collected included information on clinical characteristics, demographics and Fatigue Severity Scale (FSS) scores. Multivariable analysis was completed to determine the independent association between these variables and fatigue severity.Results:A total of 57% (95% confidence interval (CI)=45–67%) of the sample were found to have fatigue severe enough to interfere with function. People that were admitted for medical reasons; had pain, spasticity, incomplete injuries, and/or were on more that one medication with a known side effect of fatigue had significantly higher FSS scores. Multivariable analysis indicated incomplete injury was the only statistically significant predictor of a higher FSS scores; pain approached significance (P=0.07, CI=−0.09, 2.06). Together these variables account for 18% of the variance in FSS scores in this sample.Conclusion:Fatigue among individuals with spinal cord injury who are seeking outpatient rehabilitation is very common. The severity of fatigue was greater for individuals with incomplete lesions. Pain was also a potentially important covariate of fatigue. Further research is required to determine what else contributes to fatigue severity beyond these clinical variables as only minimal variance was accounted for in our model.

Modeling the Patient Journey from Injury to Community Reintegration for Persons with Acute Traumatic Spinal Cord Injury in a Canadian Centre

Background A patient’s journey through the health care system is influenced by clinical and system processes across the continuum of care. Methods To inform optimized access to care and patient flow for individuals with traumatic spinal cord injury (tSCI), we developed a simulation model that can examine the full impact of therapeutic or systems interventions across the care continuum for patients with traumatic spinal cord injuries. The objective of this paper is to describe the detailed development of this simulation model for a major trauma and a rehabilitation centre in British Columbia (BC), Canada, as part of the Access to Care and Timing (ACT) project and is referred to as the BC ACT Model V1.0. Findings To demonstrate the utility of the simulation model in clinical and administrative decision-making we present three typical scenarios that illustrate how an investigator can track the indirect impact(s) of medical and administrative interventions, both upstream and downstream along the continuum of care. For example, the model was used to estimate the theoretical impact of a practice that reduced the incidence of pressure ulcers by 70%. This led to a decrease in acute and rehabilitation length of stay of 4 and 2 days, respectively and a decrease in bed utilization of 9% and 3% in acute and rehabilitation. Conclusion The scenario analysis using the BC ACT Model V1.0 demonstrates the flexibility and value of the simulation model as a decision-making tool by providing estimates of the effects of different interventions and allowing them to be objectively compared. Future work will involve developing a generalizable national Canadian ACT Model to examine differences in care delivery and identify the ideal attributes of SCI care delivery.

Orthostatic hypotension in the first month following acute spinal cord injury

Study Design:Retrospective data analysis.Objectives:To determine prevalence of orthostatic hypotension (OH) in patients with spinal cord injury (SCI) during the acute rehabilitation period.Setting:Quaternary care spinal unit, Vancouver General Hospital, British Columbia, CanadaMethods:Eighty-nine patients with acute SCI stratified by neurological level (cervical, 55 (62%); upper thoracic, 12 (13%); lower thoracic, 22 (25%)), and graded by American Spinal Injury Association standards. Non-invasive measurement of systolic and diastolic blood pressure and heart rate were made at baseline and 3 min following an orthostatic challenge test administered during the first month after SCI.Results:Patients with cervical or upper thoracic motor complete SCI more frequently experienced OH (P<0.01). OH persisted during the first month following SCI in 74% of cervical and only 20% of upper thoracic motor complete SCI patients.Conclusion:Patients with cervical and upper thoracic motor complete SCI are more likely to experience persistent OH than those with lower level or motor incomplete SCI during the first month of rehabilitation.

International comparison of the organisation of rehabilitation services and systems of care for patients with spinal cord injury

Study design:Survey.Objectives:Describe and compare the organisation and delivery of rehabilitation services and systems of care for patients with spinal cord injury (SCI).Setting:International. Nine spinal rehabilitation units that manage traumatic SCI and non-traumatic SCI (NTSCI) patients.Methods:Survey based on clinical expertise and literature review. Completed between November 2010 and April 2011.Results:All units reported public/government funding. Additional funding sources included compensation schemes, private insurance and self funding. Six units had formal attachment to an acute SCI unit. Five units (Italy, Ireland, India, Pakistan and Switzerland) provided a national service; two units (the Netherlands and USA) provided regional and two units (Australia and Canada) provided state/provincial services. The median number of SCI rehabilitation beds was 23 (interquartile range=16–30). All units admitted both traumatic SCI and NTSCI patients. The median proportion of patients admitted who had traumatic SCI was 45% (IQR 20–48%) and 40% (IQR 30–42%) had NTSCI. The rehabilitation team in all centres determined patient readiness for discharge. There was great variability between units in the availability of SCI speciality services, ancillary services and staff/patient ratios.Conclusion:There was a wide range of differences in the organisation, systems of care and services available for patients with SCI in rehabilitation units in different countries. Understanding these differences is important when comparing patient outcomes from different settings. A standardised collection of these system variables should be considered as part of future studies and could be included in the ISCoS data set project.

Effects of exercise training and inspiratory muscle training in spinal cord injury: a systematic review.

Abstract Objective: To provide a systematic review of the studies assessing exercise training and inspiratory muscle training (IMT) in individuals for the improved respiratory function of patients with spinal cord injury (SCI). Methods: Thirteen studies (5 exercise training, 8 IMT) were identified. Articles were scored for their methodological quality using the Physiotherapy Evidence Database scores and Downs and Black tools for randomized and nonrandomized studies, respectively. Conclusions were based on the most rigorously executed studies using Sacketts levels of evidence. Results: Study comparison was compromised by diverse research designs; small sample sizes; and heterogeneity of studied populations, protocols, and outcome measures. Based on current literature, there is level 2 evidence supporting exercise training as an intervention to improve respiratory strength andendurance and level 4 evidence to support exercise training as an intervention that might improve restingand exercising respiratory function in people with SCI. There is level 4 evidence to support IMT as anintervention that might decrease dyspnea and improve respiratory function in people with SCI. Conclusions: There are insufficient data to strongly support the use of exercise training or IMT for improved respiratory function in people with SCI. There is some evidence of efficacy of both regimens; however, the evidenceis not of the best possible quality.

Spinal Column and Spinal Cord Injuries in Mountain Bikers: A 13-Year Review

Background: Multiple studies have described in general the injuries associated with mountain biking, and detailed accounts of spine injuries sustained in hockey, gymnastics, skiing, snowboarding, rugby, and paragliding have previously been published. However, no large-scale detailed assessment of mountain biking associated spinal fractures and spinal cord injuries has previously been published. Purpose: This study was undertaken to describe the patient demographics, injuries, mechanisms, treatments, outcomes, and resource requirements associated with spine injuries sustained while mountain biking. Study Design: Case series; Level of evidence, 4. Methods: Patients who were injured while mountain biking, and who were seen at a provincial spine referral center between 1995 and 2007 inclusive, with spinal cord injuries and/or spine fracture were included. A chart review was performed to obtain demographic data, and details of the injury, treatment, outcome, and resource requirements. Results: A total of 102 men and 5 women were identified for inclusion. The mean age at injury was 32.7 years (95% confidence interval 30.6, 35.0). Seventy-nine patients (73.8%) sustained cervical injuries, while the remainder sustained thoracic or lumbar injuries. Forty-three patients (40.2%) sustained a spinal cord injury. Of those with cord injuries, 18 (41.9%) were American Spinal Injury Association (ASIA) A, 5 (11.6%) were ASIA B, 10 (23.3%) ASIA C, and 10 (23.3%) ASIA D. Sixty-seven patients (62.6%) required surgical treatment. The mean length of stay in an acute hospital bed was 16.9 days (95% confidence interval 13.1, 30.0). Thirty-three patients (30.8%) required intensive care unit attention, and 31 patients (29.0%) required inpatient rehabilitation. Of the 43 patients (40.2%) seen with spinal cord injuries, 14 (32.5%) improved by 1 ASIA category, and 1 (2.3%) improved by 2 ASIA categories. Two patients remained ventilator-dependent at discharge. Conclusion: Spine fractures and spinal cord injuries caused by mountain biking accidents typically affect young, male, recreational riders. The medical, personal, and societal costs of these injuries are high. Injury prevention should remain a primary goal, and further research is necessary to explore the utility of educational programs, and the effect of helmets and other protective gear on spine injuries sustained while mountain biking.