Outcomes in patients admitted for rehabilitation with spinal cord or cauda equina lesions following degenerative spinal stenosis

Factors affecting the prognosis of recovery of motor power and ambulatory function after surgery for metastatic epidural spinal cord compression

OBJECTIVE

Metastatic epidural spinal cord compression (MESCC) causes neurological deficits that may hinder ambulation. Understanding the prognostic factors associated with increased neurological recovery and regaining ambulatory functions is important for surgical planning in MESCC patients with neurological deficits. The present study was conducted to elucidate prognostic factors of neurological recovery in MESCC patients.

METHODS

A total of 192 patients who had surgery for MESCC due to preoperative neurological deficits were reviewed. A motor recovery rate ≥ 50% and ambulatory function restoration were defined as the primary favorable endpoints. Factors associated with a motor recovery rate ≥ 50%, regaining ambulatory function, and patient survival were analyzed.

RESULTS

About one-half (48.4%) of the patients had a motor recovery rate ≥ 50%, and 24.4% of patients who were not able to walk due to MESCC before the surgery were able to walk after the operation. The factors "involvement of the thoracic spine" (p = 0.015) and "delayed operation" (p = 0.041) were associated with poor neurological recovery. Low preoperative muscle function grade was associated with a low likelihood of regaining ambulatory functions (p = 0.002). Furthermore, performing the operation ≥ 72 hours after the onset of the neurological deficit significantly decreased the likelihood of regaining ambulatory functions (p = 0.020). Postoperative ambulatory function significantly improved patient survival (p = 0.048).

CONCLUSIONS

Delayed operation and the involvement of the thoracic spine were poor prognostic factors for neurological recovery after MESCC surgery. Furthermore, a more severe preoperative neurological deficit was associated with a lesser likelihood of regaining ambulatory functions postoperatively. Earlier detection of motor weaknesses and expeditious surgical interventions are necessary, not only to improve patient functional status and quality of life but also to enhance survival.

Outcomes Reported After Surgery for Cauda Equina Syndrome: A Systematic Literature Review

STUDY DESIGN

This is a systematic literature review following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines.

OBJECTIVE

To assess the outcomes reported in trials and observational studies of surgery for cauda equina syndrome (CES), and to inform the development of a core outcome set.

SUMMARY OF BACKGROUND DATA

Scoping searches revealed that there were inconsistencies in which outcomes were reported and how they were measured in research studies for patients who had undergone surgery for CES.

METHODS

Ovid Medline, Embase, CINAHL Plus, and trial registries were searched from January 1, 1990 to September 30, 2016 with the term "cauda equina syndrome." Inclusion and exclusion criteria were applied according to study design, diagnosis, procedure, publication date, language, and patient age. Data extracted included demographics, study design, the outcomes reported, and their definition. We also assessed variation in the use of terminology for each outcome domain.

RESULTS

A total of 1873 articles were identified, of which 61 met the inclusion criteria. Of these, 737 outcomes reported verbatim were categorized into 20 core outcome domains and 12 subdomains with a range of 1 to 141 outcomes per outcome domain or subdomain. The most commonly reported outcomes were bladder function (70.5%), motor function (63.9%), and sensation (50.8%). Significant variation in the terms used for each outcome was documented, for example, bladder function outcome domain had 141 different terms.

CONCLUSION

There is significant heterogeneity in outcomes reported for studies after surgery for CES patients. This indicates a clear need for the development of a core outcome set, which has been registered as number 824 on the COMET (Core Outcome Measure in Effectiveness Trials) database.

LEVEL OF EVIDENCE

1.

Nature of the Non-traumatic Spinal Cord Injury Literature: A Systematic Review

Background: Non-traumatic SCI (NTSCI) etiologies represent a markedly heterogeneous cluster of conditions defined within the consensus NTSCI taxonomy. This meta-analysis assembles evidence about the occurrence of NTSCI and its clinical outcomes with respect to 6 research domains. Purpose: To investigate the quality and quantity of clinical NTSCI evidence published in the peer reviewed literature with reference to prognosis, diagnosis, intervention, process of care, methodology, and qualitative approaches. Methods: PubMed and MEDLINE OVID MeSH heading searches were conducted for 5 common-language NTSCI descriptors. Filters were English language and Entrez date (1997-2016). Filters also controlled for case reports, editorials or errata, and invited reviews. NTSCI etiologies incorrectly classified, animal studies, and multidimensional mapping studies were excluded. Full texts were retrieved and ranked for evidence quality according to PRISMA statement guidelines, or PEDro criteria. Data were extracted and simple descriptive statistics applied. Results: The search terms non traumatic and non-traumatic SCI retrieved 282 articles, with 39 duplicates. After exclusion of 117 articles: Level 1V (60); NTSCI incorrectly evaluated (14); publication bias (2); non-English language (1); and animal experiments (1), 126 titles/abstracts were screened and ranked against criteria. Of the 8 papers allocated for full-text review, a subset of 3 articles was ranked level 1A (1) or level 11A (2); mean PEDro score 5.75±0.5. Reasons for full-text exclusions (5) were NTSCI incorrectly classified (1) and statistical limitations (4). Of the 6 domains, prognostics had adequate data yield (86) for evidence synthesis (4.8% ranked level 1A, or 11A). Notable evidence gaps were identified in qualitative (1), methodological (2), and diagnostic (8) domains. Conclusion: Therapeutic approaches require an evidence-based understanding of the distinct contexts in which NTSCI occurs, especially in less resourced settings. Our findings underscore the need for qualitative and quantitative research on the occurrence of NTSCI in all contexts.

The prevalence and impact of age and gender on rehabilitation outcomes in spinal cord injury in India: a retrospective pilot study

STUDY DESIGN

Retrospective, 1 year case series.

OBJECTIVES

To analyze the relationship between gender, age, injury-related variables and rehabilitation outcomes in patients with spinal cord injury (SCI).

SETTING

Tertiary Rehabilitation Center, Inpatient rehabilitation unit, India.

METHODS

The data from a series of SCI cases were analyzed. Each case was followed from admission into the hospital until their discharge. Patients were described according to age, gender, etiology of SCI, neurological classification, medical complications, American spinal injury association (ASIA) classification, length of rehabilitation stay and spinal cord independence measure (SCIM).

RESULTS

Forty-seven new SCI cases, 37 (78.7%) male and 10 (21.3%) female patients, were reported over a 1-year period during 2009-2010. Male patients were younger than the female ones, but the difference was not statistically significant. There was no statistically significant relationship between age or gender, and the following SCI variables: ASIA classification, neurological classification, SCI complications and length of stay (P>0.05). Traumatic etiology and Pott's disease was found be related with gender (P<0.05). There was no statistically significant relationship between age or gender and SCIM score at admission or discharge (P>0.05).

CONCLUSION

Age and gender are not significantly related to outcomes of rehabilitation or characteristics of SCI in this sample. Further research is needed to confirm the generalizability of these findings and to identify which factors contribute more strongly to SCI rehabilitation outcomes.

Survival after spinal cord injury: a systematic review

Spinal cord injury (SCI) leading to neurological deficits produces long-term effects that persist over a lifetime. Survival analysis of patients with SCI, at individual and population level, is important for public health management and the assessment of treatment achievements. The current study evaluated survival following traumatic and non-traumatic SCI worldwide. A systematic review was conducted, and all included papers were assessed for quality using a purposely designed assessment form. Survival data were presented in Kaplan-Meier curves and compared using the log-rank test. Sixteen studies were included of which 11 concerned traumatic SCI, four non-traumatic SCI, and one both. Crude standard mortality rates (SMRs) revealed that overall mortality in SCI is up to three times higher than in the general population. Survival rates were statistically significantly lower in non-traumatic SCI than in traumatic SCI (log-rank p = 0.000). Age at injury, neurological level, extent of lesion, and year of injury have been described as predictors of survival. Causes of death stem from secondary complications, with failure of the respiratory system being the leading cause. This is the first systematic literature review on survival analysis following SCI worldwide. An increase in survival over time was found. However, the SMRs of individuals with SCI still exceed those of an age-matched non-disabled population, mainly due to secondary complications. Lower survival rates were observed in non-traumatic SCI compared with traumatic SCI.

Effects of gender on inpatient rehabilitation outcomes in the elderly with incomplete paraplegia from nontraumatic spinal cord injury

OBJECTIVE

To examine gender differences in rehabilitation outcomes for patients with nontraumatic spinal cord injury.

RESEARCH DESIGN

Secondary analysis was conducted on Medicare beneficiary data from 65 to 74 year olds with incomplete paraplegia discharged from inpatient rehabilitation facilities in 2002 through 2005.

MAIN OUTCOME MEASURES

Length of stay, Functional Independence Measure instrument motor item and subscale scores on discharge, and discharge destination.

RESULTS

Among patients with degenerative spinal disease, men had significantly longer rehabilitation stays than women (P < 0.001). Men with degenerative spinal disease had significantly lower discharge Functional Independence Measure scores than women, indicating more dependence in self-care (P < 0.001) and mobility (P < 0.001). Among patients with degenerative spinal disease, men were less likely to walk (odds ratio = 0.58; 95% CI = 0.38-0.87) and less likely to be independent with bladder management (odds ratio = 0.44; 95% CI = 0.31-0.62). Among patients with vascular ischemia, men were more independent (B = 2.59; 99% CI = 0.42-4.76) in mobility than women. There were no gender differences in the malignant spinal tumors group. There were no gender differences in being discharged to a community-based residence.

CONCLUSIONS

Gender distributions varied by etiology. Gender differences were found in demographics, length of stay, and functional outcomes but not discharge destination. Men were more dependent than women at discharge in the etiology group with the least overall disability (degenerative spinal disease) and more independent in mobility than women at discharge in the etiology group with the most overall disability (vascular ischemia).

Effects of etiology on inpatient rehabilitation outcomes in 65- to 74-year-old patients with incomplete paraplegia from a nontraumatic spinal cord injury

OBJECTIVE

To examine differences in rehabilitation outcomes for older patients with a nontraumatic spinal cord injury (NT-SCI) for 5 etiologic diagnoses: degenerative spinal disease (DSD), malignant spinal tumor, benign spinal tumor, vascular ischemia, and spinal abscess.

DESIGN

Retrospective cohort study that used Medicare claims and assessment data.

SETTING

A total of 479 inpatient rehabilitation hospitals and units.

PATIENTS

A total of 1780 Medicare beneficiaries (65-74 years old) with incomplete paraplegia attributable to NT-SCI who were discharged from inpatient rehabilitation facilities from 2002 through 2005.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Length of stay, discharge Functional Independence Measure (FIM) instrument motor item and subscale scores, and discharge destination.

RESULTS

Demographic characteristics varied by etiology group. Mean +/- SD rehabilitation stays ranged from 13.3 +/- 7.7 days for DSD to 26.4 +/- 13.4 days for vascular ischemia. Adjusted data showed stays differed (P < .001) across etiology groups. Adjusted discharge mean self-care and mobility subscores revealed that patients with DSD and benign tumor were more independent (P < .001) than patients with a malignant tumor or spinal abscess. Patients with vascular ischemia were more dependent (P < .01) in mobility than the DSD and benign tumor groups. Etiologic differences (P < .01) in independence in discharge FIM modifiers for walking (FIM > or = 4), bladder (FIM > or = 6) and bowel management (FIM > or = 6) and bowel accidents/continence (FIM > or = 6), but not bladder accidents (FIM > or = 6), were present. The percent of patients discharged to a community residence ranged from 59.3% to 92.6%. Adjusted data showed that significantly larger percentages (P < .01) of patients in the DSD and malignant tumor groups than in the spinal abscess group were discharged to a community residence (versus nursing home).

CONCLUSION

There are etiologic differences in demographics, rehabilitation length of stay, functional outcomes, and discharge destination in elderly patients with NT-SCI.

Non-traumatic spinal cord lesions: epidemiology, complications, neurological and functional outcome of rehabilitation

STUDY DESIGN

Prospective cross-sectional study.

OBJECTIVE

To study epidemiology, complication, neurological and functional outcome in non-traumatic spinal cord lesions (NTSCL) after inpatient rehabilitation.

SETTING

Neurological rehabilitation unit of a tertiary research hospital.

METHODS

Sixty-four patients (M/F=28:36) with NTSCL admitted from June 2005 to January 2008 for multidisciplinary rehabilitation. Epidemiology, medical complications during stay in rehabilitation, admission and discharge--Barthel Index (BI) and American Spinal Injury Association (ASIA) impairment scale for functional and neurological recovery, respectively, were recorded and analyzed.

RESULTS

NTSCL constituted 60% (64 of 106) of the total SCL patients admitted for rehabilitation during the same period. Female patients outnumbered males (56.25%) in the study. Mean age, duration of illness and duration of stay in rehabilitation were 30.64+/-13.67 years (6-57), 7.09+/-9.15 months (1-48) and 55.75+/-40.91 days (14-193), respectively. The ratio of paraplegia and quadriplegia was 2:1. Forty-four patients (68.75%) had incomplete cord lesion according to the ASIA impairment scale. Spinal tumors (26.6%) were found to be the most common etiology, followed by Pott's spine (25%) and transverse myelitis (22%). Urinary tract infection was found to be the most common complication (50%), followed by spasticity (35.93%) and urinary incontinence (31.25%). The mean BI scores showed significant (P=0.000) functional recovery during rehabilitation using paired Student's t-test. The ASIA impairment scale showed significant neurological recovery (P=0.001) using the Wilcoxon non-parametric test.

CONCLUSIONS

NTSCL constitute a significant proportion of overall SCL. Female population, paraplegia and incomplete cord lesions are more common among NTSCL in this study. Patients with NTSCL recover significantly both neurologically and functionally with rehabilitation intervention.