Long-term survival in spinal cord injury: a fifty year investigation

Long-term outcome and predictors of neurological recovery in cervical spinal cord injury: a population-based cohort study

This retrospective study analyzed prognostic factors for neurological improvement and ambulation in 194 adult patients (≥ 15 years) with traumatic cervical spinal cord injuries treated at the neurological SCI unit (SCIU) at the Karolinska University Hospital Stockholm, Sweden, between 2010 and 2020. The primary outcome was American spinal injury association impairment scale (AIS) improvement, with secondary focus on ambulation restoration. Results showed 41% experienced AIS improvement, with 51% regaining ambulation over a median follow-up of 3.7 years. Significant AIS improvement (p < 0.001) and reduced bladder/bowel dysfunction (p < 0.001) were noted. Multivariable analysis identified initial AIS C-D (< 0.001), central cord syndrome (p = 0.016), and C0-C3 injury (p = 0.017) as positive AIS improvement predictors, while lower extremity motor score (LEMS) (p < 0.001) and longer ICU stays (p < 0.001) were negative predictors. Patients with initial AIS C-D (p < 0.001) and higher LEMS (p < 0.001) were more likely to regain ambulation. Finally, older age was a negative prognostic factor (p = 0.003). In conclusion, initial injury severity significantly predicted neurological improvement and ambulation. Recovery was observed even in severe cases, emphasizing the importance of tailored rehabilitation for improved outcomes.

Evidence based clinical practice guideline for follow-up care in persons with spinal cord injury

Introduction

While it is well-established that follow-up care programs play a crucial role in preventing and early detecting secondary health conditions (SHCs) in persons with spinal cord injury [SCI, including spina bifida (SB)], the availability of evidence-based follow-up care programs remains limited. Under the leadership of the German-speaking Medical Society for Paraplegiology (DMGP), we have developed an evidence based clinical practice guideline for follow-up care of SHCs in persons with SCI and identify research gaps.

Methods

This guideline was developed in accordance with the regulations of the Association of the Scientific Medical Societies in Germany (AWMF e.V.). To ensure an evidence-based guidance, we utilized the International Classification of Functioning, Disability and Health (ICF) generic core set and ICF Core Set for individuals with SCI in long-term context as our foundational framework. We conducted a comprehensive literature review to identify existing recommendations for follow-up care and graded the level of evidence according to relevant instruments. Subsequently, we formulated recommendations and achieved consensus through a structured nominal group process involving defined steps and neutral moderation, while adhering to the criteria outlined in the German guideline development instrument (DELBI).

Results

Although there is a fair number of literatures describing prevalence and severity of SHCs after SCI, the amount of literature including recommendations was low (19 for SCI and 6 for SB). Based on the current evidence on prevalence and severity of SHCs and available recommendations, a clinical practice guideline on follow-up care of most relevant SHCs was defined. The recommendations for follow-up care are described in the following chapters: (1) Nervous system; (2) (Neuropathic) pain; (3) Cardiovascular diseases; (4) Respiratory System; (5) Immunological system, vaccination and allergies; (6) Gastrointestinal tract and function; (7) Endocrinological system and nutrition; (8) Urogenital system; (9) Contraception, pregnancy, birth and postpartum care; (10) Musculoskeletal system; (11) Pressure injuries; (12) Psychological health; (13) Medication and polypharmacy.

Conclusion

We could successfully establish an evidence based clinical practice guideline for follow-up care of SHCs in individuals with SCI. There is however a notable lack of high-quality recommendations for SCI follow-up care.

Long-Term Pulmonary Function Postspinal Cord Injury

OBJECTIVE

To investigate mean values of pulmonary function tests (PFT) at specific time points to assess long-term progression in patients with spinal cord injury (SCI).

DESIGN

Retrospective cohort study from 1997-2022.

SETTING

National rehabilitation hospital, providing scheduled admission for potential SCI-related issues. Follow-up assessments are recommended annually, guiding the observation period into consecutive 1-year intervals.

PARTICIPANTS

This study included 1394 adult patients who were admitted at least twice to the National Rehabilitation Center between 1997 and 2022, selected from an initial pool of 1510. Overall, 116 patients were excluded owing to the absence of any PFT results.

INTERVENTIONS

Not applicable.

MAIN OUTCOME MEASURES

Changes in PFT values over time, specifically assessing for a potential 2-phase pattern after injury. The hypothesis that PFT values would initially improve before declining was formulated based on existing literature.

RESULTS

Significant changes in pulmonary function were noted among 1394 adults with SCI. Forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) initially increased within the first 1-2 years after injury but declined to below baseline levels after 6 years. Pronounced changes occurred between <1 year and 1-2 years after injury (FVC: Δ=4.89, SE=0.87, P<.001; FEV1: Δ=4.28, SE=1.09, P=.002) and 1-2 years to >6 years (FVC: Δ= -5.83, SE=0.94, P<.001; FEV1: Δ= -6.49, SE=1.18, P<.001). No significant changes in the FEV1/FVC ratio. Motor completeness was significantly associated with the increase and decline phase, showing a steeper increase and less decline compared with the motor-incomplete group.

CONCLUSIONS

Pulmonary function in SCI initially increases but declines over time, falling below initial levels by 6 years. Further evaluation with more complete datasets is warranted to elucidate the factors influencing these changes.

Rib cage contributions to inspiratory capacity in patients with cervical spinal cord injury

Background

Cervical spinal cord injury (CSI) often leads to impaired respiratory function, affecting the overall well-being of patients. This study aimed to investigate the influence of rib cage motion on inspiratory capacity in CSI patients.

Methods

We conducted a study with 11 CSI patients, utilising respiratory inductance plethysmography (RIP). We measured ventilatory volume by spirometry concurrently with RIP. Participants were instructed to perform maximal inspiratory efforts. Inspiratory capacity (IC) was calculated from spirometry waveforms. We converted the respiratory waveforms of the chest and abdomen into inspiratory volume measured by a spirometer. The inspiratory volume measured by the chest sensor was defined as VRIP-rib cage (VRIP-rc), and the inspiratory volume measured by the abdominal sensor was defined as VRIP-abdomen (VRIP-ab). Subsequently, the relationships of IC with VRIP-rc and VRIPab were assessed.

Results

The mean IC was 1.828 ± 0.459 L, with the mean VRIP-rc at 1.343 ± 0.568 L and the mean VRIP-ab at 0.485 ± 0.427 L. A significant correlation was observed between IC and VRIP-rc (r = 0.67, p = 0.02), indicating that rib cage motion significantly influences IC in CSI patients.

Conclusion

This study highlights the importance of rib cage motion in assessing inspiratory capacity in patients with CSI.

Management of neurogenic bladder in patients with spinal cord injuries/disorders and end stage renal disease: a case series

INTRODUCTION

Patients with spinal cord injuries/disorders (SCI/D) often suffer from bladder dysfunction, commonly referred to as neurogenic bladder or neurogenic lower urinary tract dysfunction (NLUTD). Standard urologic evaluation and management help to minimize complications such as vesicoureteral reflux, urinary tract infection, and nephrolithiasis. However, we have further encountered patients with more complex issues, such as chronic kidney disease (CKD), end-stage renal disease (ESRD), bilateral nephrectomies, and urinary diversion/augmentation surgeries. Of particular interest, there is a lack of standardized guidance for bladder management in SCI/D patients with ESRD. These patients are at high risk for urological complications and would benefit from codified bladder management strategies.

CASE PRESENTATION

In this article, we present eleven unique cases of NLUTD with associated ESRD and discuss recommendations utilizing simple and commonly available clinical interventions.

DISCUSSION

The inherently small population size of SCI/D patients with NLUTD and ESRD makes detailing a large sample size case series difficult. Future studies must aim to include a larger sample size as able, however, to better determine standardized protocols for chronic bladder management in SCI/D patients with NLUTD and ESRD. Experiences from this small case series are offered for consideration.

The protein kinase A signaling pathway mediates the effect of electroacupuncture on excessive contraction of the bladder detrusor in a rat model of neurogenic bladder

BACKGROUND

Neurogenic bladder (NB) is a form of neurological bladder dysfunction characterized by excessive contraction of the bladder detrusor. Protein kinase A (PKA) signaling is involved in the contraction of the detrusor muscle.

AIMS

To investigate whether PKA signaling mediates the effect of electroacupuncture (EA) on the excessive contraction of the bladder detrusor in NB.

METHODS

Sixty rats were randomly divided into control, sham, NB, NB + EA, and NB + EA + H89 (a PKA receptor antagonist) groups. The modified Hassan Shaker spinal cord transection method was used to generate a NB model. After EA intervention for one week, urodynamic tests were used to evaluate bladder function, hematoxylin and eosin staining was conducted to assess morphological changes, enzyme-linked immunosorbent assay (ELISA) was performed to measure the concentration of PKA, and Western blotting was conducted to measure the protein levels of phosphorylated myosin light chain kinase (p-MLCK)/p-MLC.

RESULTS

The results showed that NB resulted in morphological disruption, impairment of urodynamics, and decreases in the concentration of PKA and the protein levels of p-MLCK/p-MLC. EA reversed the changes induced by NB dysfunction. However, the improvement in urodynamics and the increases in the concentration of PKA and the protein levels of p-MLCK/p-MLC were inhibited by H89.

CONCLUSION

Our findings indicate that the PKA signaling pathway mediates the beneficial effect of EA on excessive contraction of the bladder detrusor in a rat model of NB.

Epidemiology and healthcare utilization of First Nations peoples living with spinal cord injury in Alberta: an observational study to explore health inequities

STUDY DESIGN

Retrospective observational cohort study.

OBJECTIVES

Estimate spinal cord injury (SCI) prevalence in First Nations and non-First Nations populations and compare healthcare utilization as an indirect marker of health inequities.

SETTING

Alberta, Canada.

METHODS

We created a prevalent adult SCI cohort by identifying cases between April 1, 2002 and December 31, 2017 who were followed for common SCI complications and location of healthcare access from January 1, 2018 to December 31, 2019 using administrative data sources housed within Alberta Health Services (AHS). First Nations and non-First Nations SCI cohorts were divided into SCI etiology: traumatic SCI (TSCI) and non-traumatic SCI (NTSCI). Statistical analyses compared prevalence, demographics, healthcare utilization, and SCI complication rates. A secondary analysis was performed using case matching for demographics, injury type, injury level, and comorbidities.

RESULTS

TSCI prevalence: 248 and 117 per 100,000 in First Nations and non-First Nations cohorts, respectively. NTSCI prevalence: 74 and 50 per 100,000 in First Nations and non-First Nations cohorts, respectively. Visit rates were higher in the TSCI First Nations cohort for visits to General Practitioner (GP), Emergency Department (ED), inpatient visits, and inpatient days with higher complication rates due to pulmonary, genitourinary, skin, and 'other' causes after case matching. Visits rates were higher in the NTSCI First Nations cohort for GP and specialists without differences in complication types after case matching.

CONCLUSIONS

Significant differences exist between First Nations and non-First Nations cohorts living with SCI in Alberta, suggesting healthcare inequities against First Nations Peoples in this province.

Stem Cell Therapy in Spinal Cord Injury-Induced Neurogenic Lower Urinary Tract Dysfunction

Spinal cord injury (SCI) is a devastating condition that enormously affects an individual's health and quality of life. Neurogenic lower urinary tract dysfunction (NLUTD) is one of the most important sequelae induced by SCI, causing complications including urinary tract infection, renal function deterioration, urinary incontinence, and voiding dysfunction. Current therapeutic methods for SCI-induced NLUTD mainly target on the urinary bladder, but the outcomes are still far from satisfactory. Stem cell therapy has gained increasing attention for years for its ability to rescue the injured spinal cord directly. Stem cell differentiation and their paracrine effects, including exosomes, are the proposed mechanisms to enhance the recovery from SCI. Several animal studies have demonstrated improvement in bladder function using mesenchymal stem cells (MSCs) and neural stem cells (NSCs). Human clinical trials also provide promising results in urodynamic parameters after MSC therapy. However, there is still uncertainty about the ideal treatment window and application protocol for stem cell therapy. Besides, data on the therapeutic effects regarding NSCs and stem cell-derived exosomes in SCI-related NLUTD are scarce. Therefore, there is a pressing need for further well-designed human clinical trials to translate the stem cell therapy into a formal therapeutic option for SCI-induced NLUTD.

Diagnosis and Management of Cardiovascular Risk in Individuals With Spinal Cord Injury: A Narrative Review

More than 16 000 Americans experience spinal cord injury (SCI), resulting in chronic disability and other secondary sequelae, each year. Improvements in acute medical management have increased life expectancy. Cardiovascular disease is a leading cause of death in this population, and seems to occur earlier in individuals with SCI compared with the general population. People with SCI experience a high burden of traditional cardiovascular disease risk factors, including dyslipidemia and diabetes, and demonstrate anatomic, metabolic, and physiologic changes alongside stark reductions in physical activity after injury. They also experience multiple, complex barriers to care relating to disability and, in many cases, compounding effects of intersecting racial and socioeconomic health inequities. Given this combination of risk factors, some investigators have proposed that people with SCI are at increased risk for cardiovascular disease, beyond that associated with traditional risk factors, and SCI could be considered a risk-enhancing factor, analogous to other risk-enhancing factors defined by the 2019 American Heart Association/American College of Cardiology Primary Prevention Guidelines. However, more research is needed in this population to clarify the role of traditional risk factors, novel risk factors, health care access, social determinants of health, and intersectionality of disability, race, and socioeconomic status. There is an urgent need for primary care physicians and cardiologists to have awareness of the importance of timely diagnosis and management of cardiac risk factors for people with SCI.

Assessment of the incremental prognostic value from the modified frailty index-5 in complete traumatic cervical spinal cord injury

Frailty, as measured by the modified frailty index-5 (mFI-5), and older age are associated with increased mortality in the setting of spinal cord injury (SCI). However, there is limited evidence demonstrating an incremental prognostic value derived from patient mFI-5. We conducted a retrospective cohort study to evaluate in-hospital mortality among adult complete cervical SCI patients at participating centers of the Trauma Quality Improvement Program from 2010 to 2018. Logistic regression was used to model in-hospital mortality, and the area under the receiver operating characteristic curve (AUROC) of regression models with age, mFI-5, or age with mFI-5 was used to compare the prognostic value of each model. 4733 patients were eligible. We found that both age (80 y versus 60 y: OR 3.59 95% CI [2.82 4.56], P < 0.001) and mFI-5 (score ≥ 2 versus < 2: OR 1.53 95% CI [1.19 1.97], P < 0.001) had statistically significant associations with in-hospital mortality. There was no significant difference in the AUROC of a model including age and mFI-5 when compared to a model including age without mFI-5 (95% CI Δ AUROC [- 8.72 × 10^-4 0.82], P = 0.199). Both models were superior to a model including mFI-5 without age (95% CI Δ AUROC [0.06 0.09], P < 0.001). Our findings suggest that mFI-5 provides minimal incremental prognostic value over age with respect to in-hospital mortality for patients complete cervical SCI.

Anterior cervical discectomy and fusion with plate versus posterior screw fixation after traumatic subaxial fractures in octogenarians: complications and outcomes with a 2-year follow-up

INTRODUCTION

Surgical intervention for management of spinal instability after traumatic subaxial fractures in octogenarians requires a clear consensus on optimal treatments. This study aimed to provide a guide for more efficient management through comparison and assessment of clinical outcomes and complications of anterior cervical discectomy and fusion with plate (pACDF) and posterior decompression fusion (PDF) instrumentation alone in patients aged 80 years.

METHODS

A single institution retrospective review of electronic medical records was undertaken between September 2005 and December 2021. Comorbidities were assessed using the age-adjusted Charlson comorbidity index (CCI). Logistic regression was used to identify potential risk factors for ACDF complications.

RESULTS

The rate of comorbidities were similarly high between the pACDF (n=13) and PDF (n=15) groups (pACDF: 8.7 ± 2.4 points vs. 8.5 ± 2.3 points; p=0.555). Patients in the PDF group had significantly longer surgical duration (235 ± 58.4 min vs. 182.5 ± 32.1 min; p<0.001) and significantly higher volumes of intraoperative blood loss (661.5 ± 100.1 mL vs. 487.5 ± 92.1 mL; p<0.001). The in-hospital mortality was 7.7% for the pACDF group and 6.7% for the PDF group. On day 90, the mortality rate increased in both groups from baseline (pACDF: 15.4% vs. PDF: 13.3; p>0.05). Motor scores (MS) improved significantly after surgery in both groups (pACDF: preOP MS: 75.3 ± 11.1 vs. postOP MS: 82.4 ± 10.1; p<0.05; PDF: preOP MS: 80.7 ± 16.7 vs. postOP MS: 89.5 ± 12.1; p<0.05). Statistically significant predictors for postoperative complications included longer operative times (odds ratio 1.2, 95% confidence interval 1.1-2.1; p=0.005) and larger volume of blood loss (odds ratio 1.5, 95% confidence interval 1.2-2.2; p=0.003).

CONCLUSIONS

Both pACDF and PDF can be considered safe treatment strategies for octogenarians with a poor baseline profile and subaxial fractures as they lead to patients substantial neurological improvements, and they are accompanied with low morbidity and mortality rates. Operation duration and intraoperative blood loss should be minimized to increase the degree of neurological recovery in octogenarian patients.

Species Differences in Blood Lymphocyte Responses After Spinal Cord Injury

People with spinal cord injury (SCI) get recurrent infections, such as urinary tract infections (UTIs) and pneumonias, that cause mortality and worsen neurological recovery. Over the past decades, researchers have proposed that post-SCI lymphopenia and decreased lymphocyte function increase susceptibility to infections and worsen neurological outcome in humans, leading to a condition called SCI-induced immune depression syndrome (SCI-IDS). In this review, we explore how SCI affects blood lymphocyte homeostasis and function in humans and rodents. Understanding how SCI affects blood lymphocytes will help the management of recurrent infections in spinal cord injured people and shed light on the clinical translation of findings in animal models to humans.

Bladder Management Strategies for Urological Complications in Patients with Chronic Spinal Cord Injury

Neurogenic lower urinary tract dysfunction, common in patients with chronic spinal cord injury, inevitably results in urological complications. To address neurogenic lower urinary tract dysfunction after spinal cord injury, proper and adequate bladder management is important in spinal cord injury rehabilitation, with the goal and priorities of the protection of upper urinary tract function, maintaining continence, preserving lower urinary tract function, improvement of SCI patients' quality of life, achieving compatibility with patients' lifestyles, and decreasing urological complications. This concise review aims to help urologists address neurogenic lower urinary tract dysfunction by focusing on the risks of long-term urological complications and the effects of different bladder management strategies on these complications based on scientifically supported knowledge.

Prevalence of bacteriuria in cats with neurogenic bladder

Urinary tract infections are defined as the adherence, multiplication, and persistence of an infectious agent within the urogenital system, causing an associated inflammatory response and clinical signs; instead, the presence of bacteria in urine as determined by positive bacterial culture (PUC) from a properly collected urine specimen, in the absence of clinical signs, is defined subclinical bacteriuria. Limited information on the prevalence of PUC in spinal cord injury cats affected by neurogenic bladder (NB) is available. On contrary, in NB dogs and humans the prevalence of bacteriuria is well documented. Moreover, while in humans information about bacteriemia associated with NB is already available, this aspect has never been studied in NB cats. The aim of this prospective study was to determine the prevalence of PUC in cats with NB, compared to animals affected by chronic kidney disease (CKD) and healthy cats. Furthermore, the prevalence of bacteriemia in cats with NB was evaluated. Fifty-one cats met the inclusion criteria: 12 cats were affected by NB, 22 had CKD and 17 were healthy. The prevalence of PUC was 58.33% and 18% in NB and CKD cat populations, respectively. All blood cultures were negative. The incomplete bladder emptying and the decreased resistance in the bladder wall could be considered predisposing elements to PUC in the NB feline population. The results of this study highlight, for the first time, an high prevalence of PUC in cats affected by NB, which was not found to be associated with bacteriemia.

Laryngeal and swallow dysregulation following acute cervical spinal cord injury

Laryngeal function is vital to airway protection. While swallow is mediated by the brainstem, mechanisms underlying increased risk of dysphagia after cervical spinal cord injury (SCI) are unknown. We hypothesized that loss of descending phrenic drive affects swallow and breathing differently, and loss of ascending spinal afferent information alters swallow regulation. We recorded electromyograms from upper airway and chest wall muscles in freely breathing pentobarbital-anesthetized cats and rats. Inspiratory laryngeal activity increased ~two-fold following C2 lateral-hemisection. Ipsilateral to the injury, crural diaphragm EMG amplitude was reduced during breathing (62 ± 25% change post-injury), but no animal had complete termination of activity; 75% of animals increased contralateral diaphragm recruitment, but this did not reach significance. During swallow, laryngeal adductor and pharyngeal constrictor muscles increased activity, and diaphragm activity was bilaterally suppressed. This was unexpected because of the ipsilateral-specific response during breathing. Swallow-breathing coordination was also disrupted and more swallows occurred during early expiration. Finally, to determine if the chest wall is a major source of feedback for laryngeal regulation, we performed T1 total transections in rats. As in the C2 lateral-hemisection, inspiratory laryngeal recruitment was the first feature noted. In contrast to the C2 lateral-hemisection, diaphragmatic drive increased after T1 transection. Overall, we found that SCI alters laryngeal drive during swallow and breathing, and reduced swallow-related diaphragm activity. Our results show behavior-specific effects, suggesting SCI affects swallow more than breathing, and emphasizes the need for additional studies on the effects of ascending afferents from the spinal cord on laryngeal function.

Efficacy and toxicity of the DPCPX nanoconjugate drug study for the treatment of spinal cord injury in rats

Effects of the Adenosine A1 blockade using 8-cyclopentyl-1,3-diprophyxanthine (DPCPX) nanoconjugate on inducing recovery of the hemidiaphragm paralyzed by hemisection have been thoroughly examined previously; however, the toxicology of DPCPX nanoconjugate remains unknown. This research study investigates the therapeutic efficacy and toxicology of the nanoconjugate DPCPX in the cervical spinal cord injury (SCI) rat model. We hypothesized that a single injection of nanoconjugate DPCPX in the paralyzed left hemidiaphragm (LDH) of hemisected rats at the 2^nd cervical segment (C2Hx) would lead to the long-term recovery of LDH while showing minimal toxicity. Adult male rats underwent left C2Hx surgery and the diaphragms' baseline electromyography (EMG). Subsequently, rats were randomized into a control group, and four treated subgroups. Three subgroups received a single intradiaphragmatic dose of either 0.09, 0.15, 0.27 µg/kg, and one subgroup received 0.1 mg/kg of native DPCPX 2 times/day intravenous (i.v.) for 3 days (total 0.6 mg/kg). Rats were monitored for a total of 56 days. Compared to control, the treatment with nanoconjugate DPCPX at 0.09 µg/kg, 0.15 µg/kg, and 0.27 µg/kg doses elicited significant recovery of paralyzed LDH (i.e., 67% recovery at eight weeks) (p<0.05). DPCPX nanoconjugate treated rats had significant weight loss first two weeks but recovered significantly by day 56 (p<0.05). The levels of gold in the blood and body tissues were below the recommended levels. No sign of weakness, histology of tissue damage, or organ abnormality was observed. A single dose of DPCPX nanoconjugate can induce long-term diaphragm recovery after SCI without observed toxicity.

Netrin-1: A Serum Marker Predicting Cognitive Impairment after Spinal Cord Injury

Objective

Although cognitive impairment has received more attention in recent years as a result of spinal cord injury (SCI), the pathogenic process that causes it is still unknown. The neuroprotective effects of Netrin as a family of laminin-related secreted proteins were discovered. The purpose of this study was to determine the changes of serum Netrin-1 after SCI and its relationship with cognitive impairment.

Methods

96 SCI patients and 60 controls were included in our study. We collected baseline data from all participants, measured their serum Netrin-1 levels, and followed up their cognitive levels 3 months later.

Results

The clinical baseline values between the control and SCI groups were not significantly different (p > 0.05). However, the serum Netrin-1 level in the SCI group was significantly lower than that in the control group (528.4 ± 88.3 pg/ml vs. 673.5 ± 97.2 pg/ml, p < 0.05). According to the quartile level of serum Netrin-1 level in the SCI group, we found that with the increase of serum Netrin-1 level, the MoCA score also increased significantly (p < 0.001), indicating that the serum Netrin-1 level was positively correlated with the MoCA score after SCI. After controlling for baseline data, multiple regression analysis revealed that Netrin-1 remained an independent risk factor for cognitive impairment after SCI (=0.274, p = 0.036).

Conclusions

Netrin-1 may be a neuroprotective factor for cognitive impairment, which may serve as a serum marker to predict cognitive impairment after SCI.

Metabolic and cardiopulmonary impact of aquatic exercise and nutritional guidance for four individuals with chronic motor incomplete spinal cord injury: a case series

BACKGROUND

Persons living with chronic spinal cord injury (SCI) demonstrate an increased risk of cardiovascular diseases.

Purpose The aim of this report was to assess the cardiopulmonary and metabolic impact of prescribed aquatic exercise in combination with dietary guidance for four individuals experiencing chronic SCI.

CASE DESCRIPTION

We measured peak oxygen consumption (peak VO₂), resting energy expenditure (REE), weight, food logs, fasting glucose, insulin and glycated hemoglobin (HbA1C) in four men with incomplete SCI, aged 34 to 63 years.

INTERVENTION

The men received a group aquatic exercise program three times per week for 10 weeks, and a weekly individual nutritional consultation by phone.

OUTCOMES

Peak VO₂ increased by 7.9% and 34.4% in participants #3 and #4 and decreased by 12% and 16.4% in #1 and #2. Glucose values decreased by 19.6% and 14.2% for #1 and #3, and increased by 9.3% for both #2 and #4. Body mass decreased by 9.9%, 3.0% and 5.7% for participants #1, #2 and #3, but demonstrated no change for participant #4. Dietary guidance and education produced positive changes, including reduced fat, carbohydrate, daily sugar, and average calorie intake.

CONCLUSION

Moderate exercise with weekly nutritional guidance appeared to positively impact body mass and dietary selections with varied metabolic and cardiopulmonary results.

A systematic review of suicidal ideation and behaviors among adults with spinal cord injury

CONTEXT

Suicide is a public health crisis within the United States. Individuals with spinal cord injury (SCI) are vulnerable to negative outcomes such as suicide.

OBJECTIVE

This systematic review describes frequency of suicidal ideation (SI) and behaviors (suicide attempt [SA] and deaths) among samples of adults living with SCI. Associated risk and protective factors of SI and suicidal behaviors were also explored.

METHODS

On July 7, 2021, OVID Medline, EMBASE, OVID PsycINFO, Web of Science Core Collection, CINAHL, Cochrane Library, and Google Scholar databases were searched for SI, SA, and deaths by suicide among adults with a history of SCI. Risk of bias (RoB) was assessed using the Effective Public Health Practice Project (EPHPP) quality assessment tool. Results were synthesized descriptively considering the likely impact of RoB. The updated Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 reporting method was used.

RESULTS

Sixty-nine articles were included. Frequency of SI and SAs within study samples ranged from 4% to 67%, and 0% to approximately 66%, respectively. While assessment methods for SI and SA widely varied, suicide deaths data sources were more consistent. Studies assessing SI and SA generally had high RoB and the overall strength of evidence was low. Stronger observational study designs assessing death by suicide had low RoB and the overall strength of evidence was high. Very few studies examined protective factors.

DISCUSSION

Findings support previous work. Quality of evidence, and therefore confidence in the frequency of these outcomes, was impacted by the use of assessment measures without sufficient psychometric properties. The field will benefit from use of psychometrically sound measures to assess for SI, SA and suicide deaths. Furthermore, additional work is needed to elucidate risk and protective factors and to clearly characterize samples to increase generalizability of findings to the larger SCI community, including standardized reporting of SCI characteristics (e.g. use of American Spinal Injury Association classification system). Ultimately, improved suicide assessment and risk management is expected to prevent suicide among those living with SCI.

REGISTRATION

CRD42020164686.

Hybrid Therapy (Surgery and Radiosurgery) for the Treatment of Renal Cell Carcinoma Spinal Metastases

BACKGROUND

The management of spinal metastatic renal cell carcinoma (mRCC) is controversial regarding extent of resection and radiation dosing.

OBJECTIVE

To determine outcomes in patients treated with hybrid therapy (separation surgery plus adjuvant stereotactic body radiation therapy [SBRT]) for mRCC.

METHODS

A retrospective study of a prospectively collected cohort of patients undergoing hybrid therapy for mRCC between 2003 and 2017 was performed. SBRT was delivered as high-dose single-fraction, high-dose hypofractionated, or low-dose hypofractionated. Extent of disease, clinical and operative outcomes, and complications data were collected, and associations with overall survival (OS) and progression-free survival were determined.

RESULTS

Ninety patients with mRCC with high-grade epidural spinal cord compression (ESCC grades 2 and 3) were treated. Metastases were widespread, oligometastatic, and solitary in 56%, 33%, and 11% of patients, respectively. SBRT delivered was high-dose single-fraction, high-dose hypofractionated, and low-dose hypofractionated in 24%, 56%, and 20% of patients, respectively. The 1-yr cumulative incidence of major complications was 3.4% (95% confidence interval [CI]: 0.0%-7.2%). The median follow-up was 14.2 mo for the entire cohort and 38.3 mo for survivors. The 1-yr cumulative incidence of progression was 4.6% (95% CI: 0.2%-9.0%), which translates to a local control rate of 95.4% (95% CI: 91.0%-99.8%) 1 yr after surgery. The median OS for the cohort was 14.8 mo.

CONCLUSION

These data support the use of hybrid therapy as a safe and effective strategy for the treatment of renal cell spine metastases.

Spinal Cord Injury in Middle-aged and Older Adults Who Had Undergone Active Rehabilitation Treatment at a Remote Hospital: A Case Series

Background:

Middle-aged and older individuals with spinal cord injury (SCI) often require long-term care even after receiving rehabilitation treatment, making it difficult for them to return home. We retrospectively investigated our active rehabilitation treatment for patients with SCI.

Case:

Included in this case series were ten patients with SCI who were admitted to our general hospital (located in the southern part of Wakayama Prefecture) and who underwent active rehabilitation treatment. The participants were investigated retrospectively by access to electronic medical records. The Barthel index scores for discharged patients were determined at an outpatient clinic, and the community phase of rehabilitation management was recorded. The average age of the 10 patients was 67.4 ± 13.4 years, and the average period from onset to transfer to our hospital was 102.6 ± 69.9 days. The Barthel index scores significantly improved from 39.0 ± 30.9 at admission to 65.0 ± 28.2 at discharge (P<0.05). Among the seven patients who were discharged to their homes, six had cervical SCI. Some patients with American Spinal Injury Association impairment scale grades A and B at admission could be discharged home, and their Barthel index scores were maintained after discharge.

Discussion

: Even in a remote rural hospital, the activities of daily living of patients with SCI improved, and seven of the ten patients were discharged home. The activities of daily living of the discharged patients were maintained. To achieve these results, active rehabilitation treatment conducted by rehabilitation specialists is important.

[Urinary drainage of spinal cord injured patients in the acute phase of trauma: A descriptive, retrospective study]

INTRODUCTION

Urinary retention in the acute phase of a spinal cord injury (SCI) requires bladder drainage (BD). International scientific societies recommend early implementation of intermittent catheterisation (IC) to prevent lower urological complications, preserve fertility, the urological future of the patient and improve its quality of life. The aim of our study was to analyze the mode of BD in the acute phase of a trauma in patients with SCI.

MATERIALS AND METHODS

We retrospectively analyzed the mode of BD of patients with SCI in the acute phase of trauma at the Bordeaux University Hospital from 2013 to 2018.

RESULTS

The care pathways of 81 patients were analyzed; patients were hospitalized in intensive care unit (ICU) (42%, n=34), in orthopaedic ward (19.8%, n=16) or in ICU and orthopaedic ward (38.2%, n=31). All of them had an indwelling catheter (IUD) inserted before IC was introduced in 56 of them (69%). On hospital discharge, IC was the BD for only 37% of patients, with differences according to the care pathway: 65% of patients leaving ICU were on IC, compared with 11% leaving orthopaedic ward. 80% of patients who had IC in ICU had an IUD installed in orthopaedic ward.

CONCLUSION

In this study, during the acute phase of a trauma in the majority of SCI patient, IC was introduced only in a minority of patients and the promotion was different within the hospital care pathways. Those results enhanced the need for IC awareness in different hospital units to standardize the best patient care.

LEVEL OF EVIDENCE

3.

Peripheral Immune Dysfunction: A Problem of Central Importance after Spinal Cord Injury

Simple Summary

Spinal cord injury can result in an increased vulnerability to infections, but until recently the biological mechanisms behind this observation were not well defined. Immunosuppression and concurrent sustained peripheral inflammation after spinal cord injury have been observed in preclinical and clinical studies, now termed spinal cord injury-induced immune depression syndrome. Recent research indicates a key instigator of this immune dysfunction is altered sympathetic input to lymphoid organs, such as the spleen, resulting in a wide array of secondary effects that can, in turn, exacerbate immune pathology. In this review, we discuss what we know about immune dysfunction after spinal cord injury, why it occurs, and how we might treat it.

Abstract

Individuals with spinal cord injuries (SCI) exhibit increased susceptibility to infection, with pneumonia consistently ranking as a leading cause of death. Despite this statistic, chronic inflammation and concurrent immune suppression have only recently begun to be explored mechanistically. Investigators have now identified numerous changes that occur in the peripheral immune system post-SCI, including splenic atrophy, reduced circulating lymphocytes, and impaired lymphocyte function. These effects stem from maladaptive changes in the spinal cord after injury, including plasticity within the spinal sympathetic reflex circuit that results in exaggerated sympathetic output in response to peripheral stimulation below injury level. Such pathological activity is particularly evident after a severe high-level injury above thoracic spinal cord segment 6, greatly increasing the risk of the development of sympathetic hyperreflexia and subsequent disrupted regulation of lymphoid organs. Encouragingly, studies have presented evidence for promising therapies, such as modulation of neuroimmune activity, to improve regulation of peripheral immune function. In this review, we summarize recent publications examining (1) how various immune functions and populations are affected, (2) mechanisms behind SCI-induced immune dysfunction, and (3) potential interventions to improve SCI individuals’ immunological function to strengthen resistance to potentially deadly infections.

Health inequalities and income for people with spinal cord injury. A comparison between and within countries

Income and health are related in a bi-directional manner, whereby level of income affects health and vice versa. People in poorer households tend to experience worse health status and higher mortality rates than people in wealthier households, and, at the same time, having poor health could restrict workability leading to less income. This gap exists in almost every country, and it is more pronounced in more unequal countries and in vulnerable populations, such as people experiencing disability. The goal of this paper is to estimate the health-income gap in people with a Spinal Cord Injury (SCI), which is a chronic health condition often associated with multiple comorbidities that leads to disability. As data on mortality is inexistent, to estimate the health-income gap for persons with SCI, this paper uses two health outcomes: the number of years a person has lived with the injury, and a comorbidity index. Data was obtained from the International Spinal Cord Injury survey (InSCI), which is the first worldwide survey on community-dwelling persons with SCI. To compare across countries, the health outcomes were adjusted through hierarchical models, accounting for country fixed-effects, individual characteristics such as age and gender, and injury characteristics (cause, type and degree). Our results suggest that for the years living with SCI, the gap varies from 1 to 6 years between the lowest and the highest income groups. The main driver of such a difference is the cause of injury, where injuries caused by work accidents showed the biggest gap. Similarly, for the comorbidity index, persons with SCI in poorer deciles reported significantly more comorbidities, forty times more, than people in richer deciles.

Impact of Frailty on Morbidity and Mortality in Adult Patients Presenting with an Acute Traumatic Cervical Spinal Cord Injury

OBJECTIVE

The aim of this study was to determine if baseline frailty was an independent predictor of adverse events (AEs) and in-hospital mortality in patients being treated for acute cervical spinal cord injury (SCI).

METHODS

A retrospective cohort study was performed using the National Trauma Database (NTDB) from 2017. Adult patients (>18 years old) with acute cervical SCI were identified using the International Classification of Diseases, Tenth Revision, Clinical Modification diagnostic and procedural coding systems. Patients were categorized into 3 cohorts based on the criteria of the 5-item modified frailty index (mFI-5): mFI = 0, mFI = 1, or mFI≥2. Patient demographics, comorbidities, type of injury, diagnostic and treatment modality, AEs, and in-patient mortality were assessed. A multivariate logistic regression analysis was used to identify independent predictors of in-hospital AEs and mortality.

RESULTS

Of 8986 patients identified, 4990 (55.5%) were classified as mFI = 0, 2328 (26%) as mFI = 1, and 1668 (18.5%) as mFI≥2. On average, the mFI≥2 cohort was 5 years older than the mFI = 1 cohort and 22 years older than the mFI = 0 cohort (P < 0.001). Most patients in each cohort sustained either complete SCI or central cord syndrome after a fall or transport accident (mFI = 0, 77.31% vs. mFI = 1, 89.5% vs. mFI≥2, 93.65%). With respect to in-hospital events, the proportion of patients who experienced any AE increased significantly along with frailty score (mFI = 0, 30.42% vs. mFI = 1, 31.74% vs. mFI≥2, 34.95%; P < 0.001). In-hospital mortality followed a similar trend, increasing with frailty score (mFI = 0, 10.53% vs. mFI = 1, 11.33% vs. mFI≥2, 16.23%; P < 0.001). On multivariate regression analysis, both mFI = 1 1.21 (odds ratio [OR], 1.21; 95% confidence interval [CI], 1.05-1.4; P = 0.008) and mFI≥2 (OR, 1.23; 95% CI, 1.05-1.45; P = 0.012) predicted AEs, whereas only mFI≥2 was found to be a predictor for in-hospital mortality (OR, 1.45; 95% CI, 1.14-1.83; P = 0.002).

CONCLUSIONS

Increasing frailty is associated with an increased risk of AEs and in-hospital mortality in patients undergoing treatment for cervical SCI.

Effects of CNS Injury-Induced Immunosuppression on Pulmonary Immunity

Patients suffering from stroke, traumatic brain injury, or other forms of central nervous system (CNS) injury have an increased risk of nosocomial infections due to CNS injury-induced immunosuppression (CIDS). Immediately after CNS-injury, the response in the brain is pro-inflammatory; however, subsequently, local and systemic immunity is suppressed due to the compensatory release of immunomodulatory neurotransmitters. CIDS makes patients susceptible to contracting infections, among which pneumonia is very common and often lethal. Ventilator-acquired pneumonia has a mortality of 20–50% and poses a significant risk to vulnerable patients such as stroke survivors. The mechanisms involved in CIDS are not well understood. In this review, we consolidate the evidence for cellular processes underlying the pathogenesis of CIDS, the emerging treatments, and speculate further on the immune elements at play.

The reorganisation of a dedicated neurourology service: An interim review

Objective:

Neuropathic bladder and urinary system pathology, such as incontinence and stone formation, are the most frequently encountered complications of spinal cord injury (SCI) and neurological disease. This study assesses the patient population and current practice at a tertiary UK neurourology service following dedicated clinic restructuring in 2017.

Methods:

A retrospective database was created to assess all patients attending the neurourology clinic over an 8-month period. The database recorded patient demographics, pathologies and subsequent investigations and management. Clinical innovations such as dedicated patient questionnaires and the formation of a dedicated multidisciplinary team, and their subsequent impacts on service improvement, were also assessed.

Results:

A total of 99 patients attended the clinic during the study. The most common pathology was SCI (51.5% (51)). The most common complaints were continence and catheter issues (61.6% (61)). Urinary symptoms such as frequency (15.2% (15)), infection (13.1% (13)) and urinary tract stones (9.1% (9)) accounted for the remainder of presenting complaints. Operative intervention was required in 25.3% (25) of cases.

Conclusion:

Patients with SCI and neurological disease experience a range of urinary symptoms with significant morbidity. Ensuring upper tract integrity, safe bladder management and intervening when necessary to improve quality of life are important concerns for the neurourologist. The redesigning of a dedicated neurourology clinic has permitted the treatment of such patients with a systematic approach ensuring safe bladder monitoring and upper tract surveillance. The introduction of a validated patient-reported symptom score has helped objective monitoring of symptoms before and after specific interventions. Patient concerns regarding sexual function and fertility are increasingly being encountered and addressed in the clinic. Level of evidence: 4

All-cause and cause-specific mortality following non-traumatic spinal cord injury: evidence from a population-based cohort study in Switzerland

Study design

Observational cohort study.

Objective

To benchmark all-cause and cause-specific mortality following NTSCI to the general population (GP).

Setting

Specialized rehabilitation centers in Switzerland.

Methods

Longitudinal data from the Swiss Spinal Cord Injury (SwiSCI) Medical Record study were probabilistically linked with cause of death (CoD) information from the Swiss National Cohort. Standardized mortality ratios (SMRs) were estimated for all-cause and cause-specific mortality. Competing risk frameworks were used to estimate the probability of death due to specific CoD.

Results

One thousand five hundred and one individuals were admitted for first rehabilitation with NTSCI between 1990–2011; CoD information was available for 454 individuals of the 525 individuals that died. Overall, the mortality rate for persons with NTSCI was 1.6 times greater than that of the GP. Deaths due to cardiovascular disease (39.8%), neoplasms (22%), and infection (9.9%) were most often reported. Individuals with an SCI due to a vascular etiology indicated the greatest burden of mortality from infection compared with the GP (SMR 5.4; 95% CI, 3.1 to 9.2).

Conclusions

Cause-specific SMRs varied according to etiology. This supports the need for targeted clinical care and follow-up. Cardiovascular disease, neoplasms, and infection, emerged as main causes of death following NTSCI and should thus be targets for future research and differential clinical management approaches.

Fecal Incontinence and Neurogenic Bowel Dysfunction in Women With Traumatic and Nontraumatic Spinal Cord Injury

BACKGROUND

In the literature on chronic spinal cord injury, neurogenic bowel dysfunction has not gained as much attention as bladder dysfunction, the traditional cause of morbidity and mortality.

OBJECTIVE

The purpose of this study was to investigate the prevalence of fecal incontinence and conditions associated with fecal incontinence in women with spinal cord injury.

DESIGN

In this cross-sectional study, data were obtained from an electronic medical chart database containing standardized questionnaires.

SETTINGS

The study was conducted at the Clinic for Spinal Cord Injuries, Rigshospitalet, where patients from Eastern Denmark are followed every second year.

PATIENTS

Women who sustained a spinal cord injury between September 1999 and August 2016 and attended a consultation between August 2010 and August 2016 were included. If the bowel function questionnaire had never been answered, the woman was excluded.

MAIN OUTCOME MEASURES

The newest completed questionnaire regarding bowel function, urinary bladder function, quality of life, neurologic level/completeness/etiology of injury, mobility status, and spousal relationship was obtained from each woman.

RESULTS

Among the 733 identified women, 684 were included, of whom only 11% had a complete motor injury. A total of 35% experienced fecal incontinence, varying from daily to less than monthly, and 79% experienced bowel dysfunction. Fecal incontinence was associated with urinary incontinence and decreased satisfaction with life in general and psychological health. In the multivariate logistic regression analysis, the odds of daily-monthly fecal incontinence increased significantly with increasing age, myelomeningocele as etiology of injury, a more complete paraplegic injury, use of wheelchair permanently, and follow-up <3 months.

LIMITATIONS

There were missing data in the study, including 12% with no answer to the fecal incontinence question.

CONCLUSIONS

Fecal incontinence is a severe problem that affects more than one third of women with spinal cord injury and is associated with decreased quality of life. The present study emphasizes that women with myelomeningocele, a more complete paraplegic injury, older age, short follow-up period, and permanent wheelchair use have an increased risk of fecal incontinence. See Video Abstract at http://links.lww.com/DCR/A985. INCONTINENCIA FECAL Y DISFUNCIÓN NEUROGÉNICA DEL INTESTINO EN MUJERES CON LESIÓN DE LA MEDULA ESPINAL TRAUMÁTICA Y NO TRAUMÁTICA: En la literatura sobre la lesión crónica de la médula espinal, la disfunción neurógena del intestino no ha ganado tanta atención como la disfunción de la vejiga, la causa tradicional de morbilidad y mortalidad. OBJETIVÓ:: Investigar la prevalencia de la incontinencia fecal y las condiciones asociadas con la incontinencia fecal en mujeres con lesión de la médula espinal. DISEÑO:: En este estudio transversal, los datos se obtuvieron de una base de datos de registros médicos electrónicos que contenía cuestionarios estandarizados. CONFIGURACIÓN:: Clínica para Lesiones de la Médula Espinal, Rigshospitalet, donde los pacientes del Este de Dinamarca son seguidos cada dos años.

PACIENTES

Mujeres que sufrieron una lesión en la médula espinal entre Septiembre de 1999 a Agosto de 2016 y asistieron a una consulta entre Agosto de 2010 a Agosto de 2016. Si nunca se había respondido el cuestionario de la función intestinal, se excluyó a la mujer.

MEDIDA DE RESULTADOS PRINCIPALES

Se obtuvo el cuestionario más reciente y completo sobre la función intestinal, la función de la vejiga urinaria, la calidad de vida, el nivel neurológico/integridad/etiología de la lesión, el estado de movilidad y la relación con el cónyuge.

RESULTADOS

Entre las 733 mujeres identificadas, se incluyeron 684, de las cuales solo el 11% tenía una lesión de motor completa. Un total de 35% experimentó incontinencia fecal que varió de diaria a menos de mensual, y el 79% experimentó disfunción intestinal. La incontinencia fecal se asoció con incontinencia urinaria y disminución de la satisfacción de vida en general y con la salud psicológica. En el análisis de regresión logística multivariable, las probabilidades de incontinencia fecal diaria-mensual aumentaron significativamente con el aumento de la edad, el mielomeningocele como etiología de la lesión, una lesión parapléjica más completa, el uso de silla de ruedas de forma permanente y el seguimiento <3 meses.

LIMITACIONES

Faltaban datos en el estudio, incluyendo el 12% sin respuesta a la pregunta sobre incontinencia fecal.

CONCLUSIONES

La incontinencia fecal es un problema grave que afecta a más de un tercio de las mujeres con lesión de la médula espinal y se asocia con una disminución de calidad de vida. El presente estudio enfatiza que las mujeres con mielomeningocele, una lesión parapléjica más completa, mayor edad, corto período de seguimiento y uso de silla de ruedas permanente tienen un mayor riesgo de incontinencia fecal. Vea el Video del Resumen en http://links.lww.com/DCR/A985.

Poor adherence to influenza vaccination guidelines in spinal cord injury: results from a community-based survey in Switzerland

STUDY DESIGN

Cross-sectional survey.

OBJECTIVES

To evaluate the annual influenza vaccination coverage rate (IVCR) among community-dwelling individuals with spinal cord injury (SCI).

SETTING

SCI community in Switzerland.

METHODS

Participants were responders to the influenza vaccination question (n = 492) in the 2012 community survey of the Swiss Spinal Cord Injury (SwiSCI) cohort study. IVCR of SwiSCI participants were compared to the normative Swiss population, sampled in the Swiss Health Survey of 2012 using direct standardization, logistic regression standardization, and a genetic matching approach to control for differences in age, sex, and quarterly period of survey response.

RESULTS

Individuals with SCI showed higher crude (26%, 95% confidence interval (CI): 22-30%) and age- and sex-standardized (24%, CI: 23-24%) IVCR than observed in the general population (15% CI, 14-15%). The adjustment for age and sex as well as quarterly period of survey response showed that the standardized IVCR of individuals with SCI (17%; CI: 12-23%) approached that of the general population. Low IVCR of about 10% were found among individuals with SCI younger than 45 years. IVCR were similar between men and women and between individuals with incomplete and complete paraplegia and tetraplegia.

CONCLUSION

The IVCR in individuals with chronic SCI was not higher than in the general population and much lower than guidelines recommend. The improvement of the IVCR is an important target of health policy in SCI in Switzerland as to reduce the evidenced excess burden in respiratory-disease related morbidity and mortality.

Prognostic implication of gait function following treatment for spinal cord compression in men diagnosed with prostate cancer

Background: Malignant spinal cord compression (MSCC) is a severe complication of metastatic prostate cancer (PCa) and may compromise neurological functions, including gait function. This study aimed to evaluate the association between survival and gait function prior to, immediately after and 6 weeks following radiotherapy for MSCC in PCa patients.Patient sample: All PCa patients admitted with MSCC at Rigshospitalet, Denmark from January 1, 2010 to December 31, 2011 were included. Patients were followed until death to analyze gait function as a prognostic factor.Methods: Of the 76 included patients, four patients underwent surgical decompression followed by radiotherapy and 72 patients received only radiotherapy. Gait was evaluated prior to radiotherapy, immediately after radiotherapy and at 6 weeks follow-up.Results: Before radiotherapy, 88% had normal gait function and 12% had complete loss of gait function. Corresponding percentages after radiotherapy were 72% and 28%, respectively. Median overall survival following MSCC was 4.9 months (95% CI = 3.6-6.2) with a 3-, 6-, and 12-months survival probability of 64%, 42%, and 21%, respectively. Multivariate analyses demonstrated that patients without gait function after radiotherapy had a 2.6-2.8-fold increased risk of dying compared to men with gait function. Patients with more than two vertebrae involved had a 2.3-3.4-fold increased risk of dying when compared to patients with 1-2 vertebral metastases.Conclusions: PCa patients with MSCC have a poor prognosis. Most likely reflecting differences in tumor burden, preserved gait function following radiotherapy is associated with better prognosis. Further prospective studies are required to confirm this association.

Hyperthermia due to heat retention in chronic spinal cord injury: A case report

An 80-year-old male with past history of cervical spinal cord injury visited our hospital owing to perforation in the digestive tract. Upon admission to the general ward, he presented with a sustained fever that was unresponsive to acetaminophen and antibiotics. Based on the dry skin and underlying disease, he was diagnosed with hyperthermia due to heat retention. After controlling the room temperature to cool his body and performing evaporative and convective cooling, his symptoms completely resolved. This case highlights that primary physicians should be aware of thermoregulatory dysfunction in patients with cervical spinal cord injury.

It still hurts! Persistent pain and use of pain medication one year after injury

BACKGROUND

Given the scarce literature data on chronic post-traumatic pain, we aim to identify early predictors of long-term pain and pain medication use after major trauma.

METHODS

Major trauma patients (Injury Severity Score ≥ 9) from three Level I Trauma Centers at 12 months after injury were interviewed for daily pain using the Trauma Quality of Life questionnaire. Multivariate logistic regression models identified patient- and injury-related independent predictors of pain and use of pain medication.

RESULTS

Of 1238 patients, 612 patients (49%) felt daily pain and 300 patients (24%) used pain medication 1 year after injury. Of a total of 8 independent predictors for chronic pain and 9 independent predictors for daily pain medication, 4 were common (pre-injury alcohol use, pre-injury drug use, hospital stay ≥ 5 days, and education limited to high school). Combinations of independent predictors yielded weak predictability for both outcomes, ranging from 20% to 72%.

CONCLUSIONS

One year after injury, approximately half of trauma patients report daily pain and one-fourth use daily pain medication. These outcomes are hard to predict.

Epidemiological State, Predictors of Early Mortality, and Predictive Models for Traumatic Spinal Cord Injury: A Multicenter Nationwide Cohort Study

STUDY DESIGN

Multi-center, retrospective cohort study.

OBJECTIVE

To determine the epidemiology, identify predictors of early mortality, and develop predictive models for traumatic spinal cord injury (SCI).

SUMMARY OF BACKGROUND DATA

Despite improved initial care and management strategies, traumatic SCI remains a devastating event. Knowledge of the epidemiological state and predictive factors for mortality is important for developing strategies and counseling; however, they have not been adequately investigated, and predictive modeling regarding outcomes remains an underused modality for patients with traumatic SCI.

METHODS

Using a nationwide trauma registry-the Japan Trauma Data Bank-we identified adult (≥18 yrs) patients with SCI between 2004 and 2015. The endpoint was in-hospital mortality. Characteristics of each patient were described. Multivariate logistic regression analyses were performed to identify factors significantly associated with in-hospital mortality and develop a predictive model.

RESULTS

In total, 236,698 patients were registered in the database. Of the 215,835 adult patients, 8069 (3.7%) had SCI. The majority had SCI at the cervical level with falls at ground level being the primary etiology. Over the study period, median age, the proportion of cervical SCI, and the etiology of falls at ground level increased. The mortality rate was 5.6%. The following eight factors, age, sex, Glasgow Coma Scale on arrival (GCS), hypotension on arrival, bradycardia on arrival, severe head injury, Injury Severity Score (ISS), and neurological severity of SCI, were independently associated with mortality. A predictive model consisting of these variables predicted mortality with area under the receiver operating characteristic curve of 0.88 (95% confidence interval [CI], 0.86-0.90).

CONCLUSION

Over the 12-year period, patient characteristics, etiology, and post-SCI outcomes significantly changed. We identified eight prognostic factors of early mortality. A predictive model including these factors showed excellent performance and may improve treatment strategies, healthcare resource allocation, and counseling.

LEVEL OF EVIDENCE

3.

Patient subjective assessment of urinary tract infection frequency and severity is associated with bladder management method in spinal cord injury

STUDY DESIGN

The Neurogenic Bladder Research Group (NBRG) registry is a multicenter prospective observational study. This manuscript is retrospective based on a cross-sectional survey.

OBJECTIVES

To assess patient subjective assessment of urinary tract infection (UTI) frequency and severity are associated with the degree of use of catheters or incontinence products.

SETTING

Multiple hospitals across the United States.

METHODS

Eligibility included: age > 18 years and acquired SCI. Over 1.5 years, 1479 eligible participants were enrolled. We excluded those with surgical reconstruction or diversion of the bladder. In total, 1282 participants were grouped by bladder management: (1) indwelling catheter (IDC), (2) clean intermittent catheterization (CIC), (3) external devices (pads/condom), and (4) volitional voiding (Void). UTI frequency was classified as 0, 1-3, 4-6, or > 6 over the prior year. UTI severity was determined by hospitalization for UTI in the prior year. Multivariate regression compared these factors across groups.

RESULTS

UTIs were least frequent in Void followed by pads/condom, CIC, and IDC (all p ≤ 0.001). UTI severity followed a similar pattern. Controlling for covariates, the adjusted odds of UTI frequency (Void = reference) were 2.28 (1.38-3.76) for pads/condom, 3.42 (2.25-5.18) for CIC, and 4.3 (2.59-6.70) for IDC (all p ≤ 0.001).

CONCLUSIONS

Patient subjective assessment of UTI frequency is highest with IDC, followed by CIC, pads/condom, and lowest with spontaneous voiding. The odds of hospitalization for UTI were three times higher for IDC than spontaneous voiding. UTI risk should be considered when counseling patients about bladder management options. These associations do not imply causation but warrant further investigation in a prospective manner.

SPONSORSHIP

Patient-Centered Outcomes Research Institute (PCORI) Award (CER14092138).

The effect of level of injury and physical activity on heart rate variability following spinal cord injury

OBJECTIVE/BACKGROUND

To assess frequency domain heart rate variability (HRV) parameters at rest and in response to postural autonomic provocations in individuals with spinal cord injury (SCI) and investigate the autonomic influences on the heart of different physical activities.

DESIGN

Cross-sectional study.

METHODS

Ten subjects with complete cervical SCI and fourteen subjects with complete low thoracic SCI were prospectively recruited from the community and further divided in sedentary and physically active groups, the latter defined as regular weekly 4 hour physical activity for the preceding 3 months. Sixteen healthy individuals matched for sex and age were recruited to participate in the control group. The Low Frequency (LF), High Frequency (HF) powers and the LF/HF ratio of HRV were measured from continuous electrocardiogram (ECG) recordings at rest and after sitting using a fast Fourier transformation.

OUTCOME MEASURES

The LF,HF, and the LF/HF ratio at rest and after sitting.

RESULTS

A significant decrease in all HRV parameters in patients with SCI was found compared to controls. The change in HF, LF and LF/HF following sitting maneuver was significantly greater in controls as compared with the SCI group and greater in subjects with paraplegia as compared to subjects with tetraplegia. Better HRV values and enhanced vagal activity appears to be related to the type of physical activity in active subjects with paraplegia.

CONCLUSION

In this cohort of subjects spectral parameters of HRV were associated with the level of the injury. Passive standing was associated with higher HRV values in subjects with paraplegia.

Plasma fatty acids as markers for desaturase and elongase activities in spinal cord injured males

OBJECTIVE

To investigate the use of surrogate plasma fatty acid analysis to provide further insights into the underlying adiposity and the development of metabolic syndrome in men with spinal cord injury (SCI).

DESIGN

Case-control, cross-sectional study.

SETTING

Community-based individuals with spinal cord injury and healthy controls.

PARTICIPANTS

Twenty men with SCI age, height and weight matched with 20 able-bodied controls.

OUTCOME MEASURES

Lean tissue (LTM) and fat mass (FM) were determined using dual energy X-ray absorptiometry. Fasting blood samples were taken for analysis of fatty acids, adiponectin, insulin, glucose and leptin. Enzymatic indices were calculated using relevant fatty acids.

RESULTS

Total FM, leptin, stearoyl coenzyme A desaturase (SCD) Δ9 (SCD-16, 16:1/16:0, and SCD-18, 18:1/18:0) indices and Δ6 desaturase index were significantly higher (P < 0.05) in the SCI group than the controls. Significant differences between the groups was observed for several individual fatty acids. Correlational analysis revealed a different pattern between blood biomarkers and indices of SCDs, de novo lipogenesis and elongase. Associations between the desaturase and elongase indices and biomarkers in the controls followed those reported elsewhere for able bodied participants; the same associations were not observed in the SCI group.

CONCLUSION

We have identified disturbances in fatty acid biosynthesis in SCI individuals likely associated with the development of adipose tissue below the lesion and a decrease in LTM. Loss of LTM may disturb the normal skeletal muscle-fatty acid metabolic processes leading to the disruption of metabolic homeostasis, previously identified in persons with SCI.

Cervical spinal contusion alters Na+-K+-2Cl- and K+-Cl- cation-chloride cotransporter expression in phrenic motor neurons

Spinal chloride-dependent synaptic inhibition is critical in regulating breathing and requires neuronal chloride gradients established by cation-chloride cotransporters Na+-K+-2Cl- (NKCC1) and K+-Cl- (KCC2). Spinal transection disrupts NKCC1/KCC2 balance, diminishing chloride gradients in neurons below injury, contributing to spasticity and chronic pain. It is not known if similar disruptions in NKCC1/KCC2 balance occur in respiratory motor neurons after incomplete cervical contusion (C2SC). We hypothesized that C2SC disrupts NKCC1/KCC2 balance in phrenic motor neurons. NKCC1 and KCC2 immunoreactivity was assessed in CtB-positive phrenic motor neurons. Five weeks post-C2SC: 1) neither membrane-bound nor cytosolic NKCC1 expression were significantly changed, although the membrane/cytosolic ratio increased, consistent with net chloride influx; and 2) both membrane and cytosolic KCC2 expression increased, although the membrane/cytosolic ratio decreased, consistent with net chloride efflux. Thus, contrary to our original hypothesis, complex shifts in NKCC1/KCC2 balance occur post-C2SC. The functional significance of these changes remains unclear.

Early ventral surgical treatment without traction of acute traumatic subaxial cervical spine injuries

Background:

Spinal cord decompression after cervical spinal cord injury (SCI) is the standard of care. However, there is a lack of consensus regarding the optimal management of these injuries, including the role of traction and timing of surgery. Here, we report the safety/efficacy of ventral surgery without preoperative traction for intraoperative fracture reduction following acute cervical SCI.

Methods:

We prospectively collected a series of patients who sustained acute traumatic subaxial cervical (C3–7) spine fractures between 2004 and 2016. Patients underwent anterior cervical decompression and fusion within 24 h of injury without the utilization of preoperative traction.

Results:

Thirty-six patients (27 male, 9 female), averaging 35 years of age, sustained 25 motor-vehicle accidents, 4 sports-related injuries, and 7 falls. Fracture dislocations were seen in 26 patients, whereas burst fractures were seen in 10. The majority of injuries occurred at the C4–5 (13 patients) and C5–6 (13 patients) levels. Complete SCI occurred in 10 patients, and incomplete SCI in 26 patients. All patients underwent anterior surgery only; 16 required vertebrectomy in addition to anterior cervical discectomy and fusion. Intraoperative reduction was achieved in all patients using a Cobb elevator or distraction pins without the use of preanesthesia traction. There were no intraoperative complications. Postoperatively, there were one postoperative hematoma, two wound/hardware revisions, one subsequent posterior fusion, and one reoperation anteriorly after screw pullout. The average hospital length of stay was 10.6 days (range 1–39).

Conclusion:

Early direct surgical stabilization/fusion for acute SCI because of subaxial cervical spine fractures is both safe and effective in selected cases when performed anteriorly without preoperative traction in select cases.

Mechanisms of compensatory plasticity for respiratory motor neuron death

Respiratory motor neuron death arises from multiple neurodegenerative and traumatic neuromuscular disorders. Despite motor neuron death, compensatory mechanisms minimize its functional impact by harnessing intrinsic mechanisms of compensatory respiratory plasticity. However, the capacity for compensation eventually reaches limits and pathology ensues. Initially, challenges to the system such as increased metabolic demand reveal sub-clinical pathology. With greater motor neuron loss, the eventual result is de-compensation, ventilatory failure, ventilator dependence and then death. In this brief review, we discuss recent advances in our understanding of mechanisms giving rise to compensatory respiratory plasticity in response to respiratory motor neuron death including: 1) increased central respiratory drive, 2) plasticity in synapses on spared phrenic motor neurons, 3) enhanced neuromuscular transmission and 4) shifts in respiratory muscle utilization from more affected to less affected motor pools. Some of these compensatory mechanisms may prolong breathing function, but hasten the demise of surviving motor neurons. Improved understanding of these mechanisms and their impact on survival of spared motor neurons will guide future efforts to develop therapeutic interventions that preserve respiratory function with neuromuscular injury/disease.

Long-term compliance with bladder management in patients with spinal cord injury: A Saudi-Arabian perspective

Objective: To examine long-term compliance with bladder management in patients with spinal cord injury (SCI) at a tertiary care rehabilitation facility in Saudi Arabia.Design: Cross-sectional survey.Setting: Tertiary care rehabilitation facility in Saudi Arabia.Participants: A self-administered questionnaire was distributed to patients with SCI during their clinic visits. 50 patients (41 males and nine females) participated in the survey. Data documentation included demographic characteristics, type and level of injury, compliance with bladder management and barriers in compliance.Main outcome measures: The type of bladder management employed at first follow-up visit was compared with that employed at discharge.Results: Eleven out of 41 patients who were discharged on clean intermittent catheterization (CIC) stopped it within 3 months of discharge, mainly due to lack of accessibility and financial support to buy catheters. Of the total sample, 23% reported that they did not know the difference between catheter types and their advantages, and 49% stated that they did not receive proper health education regarding bladder management.Conclusion: CIC was the most commonly used bladder management technique in patients with SCI following up at a tertiary care rehabilitation facility in Saudi Arabia. Compliance with CIC may be improved by ensuring access to catheters post-discharge and by providing appropriate education about bladder management during inpatient rehabilitation.

Non-surgical urologic management of neurogenic bladder after spinal cord injury

PURPOSE

To review the available data on non-surgical management for neurogenic bladder in patients with spinal cord injury (SCI). Before the introduction of urinary catheters and antibiotics, neurogenic bladder was one of the main culprits for death in those patients with SCI. Currently, the management of neurogenic bladder is focused in improving quality of life and preserving renal function.

METHODS

A literature review was performed and therapeutic management for neurogenic bladder was divided in six sections: (1) intermittent bladder catheterization; (2) indwelling catheters; (3) condom catheter drainage; (4) reflex voiding and bladder expression with Valsalva or Credé; (5) oral drug therapy of the spinal cord injured bladder; and (6) botulinum neurotoxin (BoNT).

RESULTS

Intermittent catheterization is recommended as the preferable method for management of neurogenic bladder in patients with SCI based on limited high-quality data. However, this may not be feasible or available to all and other alternative options include condom catheter drainage or indwelling catheters such as urethral catheters or suprapubic tube, reflex voiding, and bladder expression with Valsalva or Credé. Non-invasive medical therapies are the key to improve incontinence, urodynamic parameters, and quality of life in this population. Botulinum neurotoxin has revolutionized the management of neurogenic bladder in the last two decades decreasing the need for reconstruction or diversion.

CONCLUSION

The Joint SIU-ICUD (Société Internationale d'Urologie) (International Consultation on Urological Diseases) International Consultation reviewed the available presented data and provided specific conclusions and recommendations for each non-surgical urologic method to address neurogenic bladder after SCI.

Soft tissue sarcoma affecting the right shoulder of a man with paraplegia from a remote traumatic spinal cord injury: a case report

Introduction

People with spinal cord injury (SCI) are getting older due to a combination of increased life expectancy and older age at the time of injury. This trend makes it more likely for these patients to have other chronic health conditions including cancer. Inevitably relatively rare cancers such as soft tissue sarcomas (STS), which are more common with advancing age, will occur in some SCI patients. The present case represents the first report of a limb STS in a patient with chronic paraplegia from a traumatic SCI.

Case presentation

We report a case of a 50-year-old right handed male with a T6 chronic, complete SCI (American Spinal Injury Association Impairment Scale A) who presented with a large mass involving his right shoulder musculature that was determined to be a high grade spindle cell sarcoma. The patient was followed closely by Physiatry over an approximately 6-month time course including prior to his tumor diagnosis, during the pre-radiation and pre-surgical planning phase, and then post-operatively for his acute inpatient rehabilitation. He was successfully discharged home to live alone in his accessible apartment complex.

Discussion

This case is the first ever reported case of a person living with a traumatic SCI who subsequently developed a limb STS. In addition to its novelty, this case illustrates how health conditions such as rare cancers are presenting more often as the chronic SCI population is getting older, which creates both unique diagnostic and management challenges for cancer rehabilitation specialists.

Mortality Rate and Predicting Factors of Traumatic Thoracolumbar Spinal Cord Injury; A Systematic Review and Meta-Analysis

Objective

To estimate the summation of mortality rate and the contributing factors in patients with traumatic thoracolumbar spinal cord injuries (TLSCI).

Methods

A systematic search of observational studies that evaluated the mortality associated with TLSCI in MEDLINE and EMBASE was conducted. The study quality was evaluated using a modified quality assessment tool previously designed for observational studies.

Results

Twenty-four observational studies involving 11,205 patients were included, published between January 1, 1997, and February 6, 2016. Ten studies were of high quality, thirteen were of moderate quality, and one study was of low quality. Seventeen reports described risk factors for mortality and eleven of these studies used a multiple regression models to adjust for confounders. The reported mortality rate ranged from 0 to 37.7% overall and between 0 and 10.4% in-hospital. The sum of mortality for in-hospital, 6-month, and 12-month were 5.2%, 26.12%, 4.3%, respectively. The mortality at 7.7 years follow-up was 10.07% and for 14 years follow-up reports ranged from 13.47% to 21.46%. Associated data such as age at injury, male to female ratio, pre-existing comorbidities, concomitant injuries, duration of follow-up, and cause of death have been underreported in studies investigating the mortality rate after TLSCI.

Conclusion

There is no study was found that accurately assessed mortality in the thoracolumbar spine, while there is general agreement that traumatic thoracolumbar spinal cord injuries are important.

Role of CT scan in theranostic and management of traumatic spinal cord injury

Traumatic spinal cord injury (TSCI) is a condition with suffering of neural structures from acute trauma with short-term or permanent sensory and motor problems. This study was conducted with the aim of determining the prevalence of TSCI in Tehran with emphasis on demographic characteristics of patients and to evaluate the effect of computed tomography (CT) in determining fracture type and severity grade of injury among TSCI patients. In a cross-sectional study, all TSCI and spinal fracture patients (N = 520) who referred to the main trauma center in Tehran, Iran, in 2013 and 2014 were selected. Radiography and CT scan were prepared and reported blindedly by two radiologists. Majority of the patients was 21-30 years male, married and their most common occupation was car driver. A significant difference was observed between gender and etiology (P = 0.001). The main etiology was traffic accident followed by falling from height. While the most common location of injury for males was thoracic vertebrae followed by lumbar vertebrae; for females it was lumbar followed by thoracic. Majority of patients had ASIA (American Spinal Injury Association) impairment scale of E (normal), followed by B (sensory incomplete). Most of the cases were hospitalized less than one week. Age of the patient and duration of hospitalization had a significant association (P = 0.015). The results showed that in traumatic spinal cord events, traffic accident and falling from height are the main etiologies; hence, authorities in Iranian health system could consider preventive policies to decline the load and TSCI effects in hospitals and population.

[Original strategy for prevention of recurrent symptomatic urinary tract infections in patients with neurogenic bladder: Bacterial interference, state of the art]

PURPOSE

Urinary tract infection (UTI) is the most common complication in patients with neurogenic bladder. The long-term use of antibiotic drugs induces an increase in antimicrobial resistance and adverse drug reactions. Bacterial interference is a new concept to prevent recurrent UTI which consists in a bladder colonization with low virulence bacteria. We performed a literature review on this emerging therapy.

MATERIALS AND METHODS

Literature review of bacterial interference to prevent symptomatic urinary tract infection in neurological population.

RESULTS

Seven prospectives study including 3 randomized, double-blind and placebo controlled trial were analyzed. The neurological population was spinal cord injured in most cases. The bladder colonization was performed with 2 non-pathogen strains of Escherichia coli: HU 2117 and 83972. At 1 month, 38 to 83% of patients were colonized. Mean duration of colonization was 48.5 days to 12.3 months. All studies showed that colonization might reduce the number of urinary tract infections and is safe with absence of serious side effects.

CONCLUSION

Bacterial interference is a promising alternative therapy for the prevention of recurrent symptomatic urinary tract infections in neurogenic patients. This therapy should have developments for a daily use practice and for a long-term efficacy.

One-year and three-year mortality prediction in adult major blunt trauma survivors: a National Retrospective Cohort Analysis

Background

Survivors of trauma are at increased risk of dying after discharge. Studies have found that age, head injury, injury severity, falls and co-morbidities predict long-term mortality. The objective of our study was to build a nomogram predictor of 1-year and 3-year mortality for major blunt trauma adult survivors of the index hospitalization.

Methods

Using data from the Singapore National Trauma Registry, 2011–2013, we analyzed adults aged 18 and over, admitted after blunt injury, with an injury severity score (ISS) of 12 or more, who survived the index hospitalization, linked to death registry data. The study population was randomly divided 60/40 into separate construction and validation datasets, with the model built in the construction dataset, then tested in the validation dataset. Multivariable logistic regression was used to analyze 1-year and 3-year mortality.

Results

Of the 3414 blunt trauma survivors, 247 (7.2%) died within 1 year, and 551 (16.1%) died within 3 years of injury. Age (OR 1.06, 95% CI 1.05–1.07, p < 0.001), male gender (OR 1.53, 95% CI 1.12–2.10, p < 0.01), low fall from 0.5 m or less (OR 3.48, 95% CI 2.06–5.87, p < 0.001), Charlson comorbidity index of 2 or more (OR 2.26, 95% CI 1.38–3.70, p < 0.01), diabetes (OR 1.31, 95% CI 1.68–2.52, p = 0.04), cancer (OR 1.76, 95% CI 0.94–3.32, p = 0.08), head and neck AIS 3 or more (OR 1.79, 95% CI 1.13–2.84, p = 0.01), length of hospitalization of 30 days or more (OR 1.99, 95% CI 1.02–3.86, p = 0.04) were predictors of 1-year mortality. This model had a c-statistic of 0.85. Similar factors were found significant for the model predictor of 3-year mortality, which had a c-statistic of 0.83. Both models were validated on the second dataset, with an overall accuracy of 0.94 and 0.84 for 1-year and 3-year mortality respectively.

Conclusions

Adult survivors of major blunt trauma can be risk-stratified at discharge for long-term support.

Testing of a New Portable Device for Dynamic Bladder Pressure Monitoring

OBJECTIVE

To develop a portable dynamic bladder pressure monitoring device for facilitating the monitoring of bladder detrusor pressure in patients with neurogenic bladder (NB) caused by spinal cord injury and further compared the effect with traditional urodynamics devices.

METHODS

Portable dynamic bladder pressure monitoring device was implemented by software and hardware. The hardware was mainly composed of seven parts, such as micro liquid pressure sensor, electric bridge amplifying circuit, clock module, SD card storage circuit, liquid crystal display circuit, touch circuit, controller circuit and so on. The main program of the software included system initialization, data acquisition, storage, display, alarm, etc. A total of 45 patients with neurogenic bladder caused by spinal cord injury were enrolled in the study. Detrusor pressure was measured with the portable device and traditional urodynamics device.

RESULTS

The test-retest reliability of the portable device was modest in two times test (intra-class correlation coefficient (ICC) = 0.852), no significant difference was found in the results of volume perfusion evaluation between our device and conventional urodynamic (each P > 0.05).

CONCLUSION

The portable dynamic bladder pressure monitoring device is conducive to the dynamic monitoring of bladder pressure in patients with neurogenic bladder caused by spinal cord injury.

Hyperbaric Oxygen Therapy After Acute Thoracic Spinal Cord Injury: Improvement of Locomotor Recovery in Rats

STUDY DESIGN

A controlled laboratory study.

OBJECTIVE

The aim of this study was to analyze the effectiveness of hyperbaric therapy (HT) using mild and moderate models of spinal cord injury (SCI).

SUMMARY OF BACKGROUND DATA

SCI can cause permanent impairment with socioeconomic consequences. The motor deficit occurs by two mechanisms: destruction of neuronal cells and local inflammatory response, resulting in hypoxia. HT acts by increasing oxygen in the injured area.

METHODS

Thoracic laminectomy was performed in 72 female Wistar rats. The MASCIS impactor was used at 12.5 mm (n = 35) and 25 mm (n = 35) of height to perform, respectively, mild and moderate SCI. Muscle strength was assessed through the Basso, Beattie, and Bresnahan scale (BBB) on days 1, 7, 14, 21, and 28 after SCI. The animals were randomized into five subgroups with seven animals each: (1) control group had SCI without HT; (2) HT 30 minutes after SCI; (3) HT 30 minutes after SCI and daily for 7 days; (4) HT 12 hours after SCI; and (5) HT 12 hours after SCI and daily for 7 days. HT was performed at 2.5 atm for 1 hour.

RESULTS

There was a linear relationship between injury severity and motor deficit until day 21, with similar BBB scores on day 28. A pattern of uniform lesions was observed in the mild SCI, with lower variation of BBB when compared with moderate SCI. All animals that underwent HT had significant improvement in motor function and histology when compared with control group. Regardless of the injury model, animals submitted to 7-day protocols had an early improvement in motor function and a smaller area of histological injury.

CONCLUSION

The present study reported that the sooner HT is begun after mild and moderate SCI and the larger the number of sessions, the greater and earlier is the motor recovery and smaller is the tissue injury.

LEVEL OF EVIDENCE

N/A.