Patient Perceptions and Clinical Assessments of Cardiometabolic Disease After Subacute Spinal Cord Injury.

OBJECTIVES: To investigate the effectiveness of health care team communication regarding cardiometabolic disease (CMD) risk factors with patients with subacute spinal cord injury (SCI). DESIGN: Multi-site prospective cross-sectional study. SETTING: Five National Institute on Disability, Independent Living, and Rehabilitation Research Model SCI Rehabilitation Centers. PARTICIPANTS: Ninety-six patients with subacute SCI, aged 18-70 years, with SCI (neurologic levels of injury C2-L2, American Spinal Injury Association Impairment Scale grades A-D), and enrolled within 2 months of initial rehabilitation discharge (N=96). INTERVENTIONS: None. MAIN OUTCOME MEASURE(S): Objective risk factors of CMD (body mass index, fasting glucose, insulin, high-density lipoprotein cholesterol, triglyceride levels, and resting blood pressure). Patient reported recall of these present risk factors being shared with them by their health care team. Medications prescribed to patients to address these present risk factors were checked against guideline- assessed risk factors. RESULTS: Objective evidence of 197 CMD risk factors was identified, with patients recalling less than 12% of these (P<.0001) being shared with them by their health care team. Thirty-one individuals (32%) met criteria for a diagnosis of CMD, with only 1 of these patients (3.2%) recalling that this was shared by their health care team (P<.0001). Pharmacologic management was prescribed to address these risk factors only 7.2% of the time. CONCLUSIONS: Despite high prevalence of CMD risk factors after acute SCI, patients routinely do not recall being told of their present risk factors. Multifaceted education and professionals' engagement efforts are needed to optimize treatment for these individuals.

Acute Spinal Cord Injury Is Associated With Prevalent Cardiometabolic Risk Factors.

OBJECTIVES: To (1) describe the prevalence of cardiometabolic disease (CMD) at spinal cord injury (SCI) rehabilitation discharge; (2) compare this with controls without SCI; and (3) identify factors associated with increased CMD. DESIGN: Multicenter, prospective observational study. SETTING: Five National Institute on Disability, Independent Living, and Rehabilitation Research Model SCI Rehabilitation Centers. PARTICIPANTS: SCI (n=95): patients aged 18-70 years, with SCI (neurologic levels of injury C2-L2, American Spinal Injury Association Impairment Scale grades A-D), and enrolled within 2 months of initial rehabilitation discharge. Control group (n=1609): age/sex/body mass index-matched entries in the National Health and Nutrition Examination Education Survey (2016-2019) (N=1704). INTERVENTIONS: None MAIN OUTCOME MEASURES: Percentage of participants with SCI with CMD diagnosis, prevalence of CMD determinants within 2 months of rehabilitation discharge, and other significant early risk associations were analyzed using age, sex, body mass index, insulin resistance (IR) by fasting glucose and Homeostasis Model Assessment (v.2), fasting triglycerides, high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol, total cholesterol, and resting blood pressure (systolic and diastolic). RESULTS: Participants with SCI had significantly higher diastolic blood pressure and triglycerides than those without SCI, with lower fasting glucose and HDL-C. A total of 74.0% of participants with SCI vs 38.5% of those without SCI were obese when applying population-specific criteria (P<.05). Low HDL-C was measured in 54.2% of participants with SCI vs 15.4% of those without (P<.05). IR was not significantly different between groups. A total of 31.6% of participants with SCI had ≥3 CMD determinants, which was 40.7% higher than those without SCI (P<.05). Interplay of lipids and lipoproteins (ie, total cholesterol:HDL-C ratio and triglyceride:HDL-C ratio) were associated with elevated risk in participants with SCI for myocardial infarction and stroke. The only significant variable associated with CMD was age (P<.05). CONCLUSIONS: Individuals with SCI have an increased CMD risk compared with the general population; obesity, IR, and low HDL-C are the most common CMD risk determinants; age is significantly associated with early CMD.

Cardiometabolic changes and disparities among persons with spinal cord injury: a 17-year cohort study.

BACKGROUND: Cardiometabolic syndrome in individuals who are aging with spinal cord injury (SCI) increases the risk of cardiovascular disease and diabetes. Longitudinal research is needed on the natural progression of cardiometabolic syndrome in SCI. OBJECTIVE: To identify the magnitude of changes in biomarkers of cardiometabolic syndrome and diabetes over time in people aging with SCI, and to discern how these biomarkers relate to demographics of race/ethnicity and sex. METHODS: This cohort study was a follow-up of a convenience sample of 150 participants (mean age, 51.3; duration of SCI, 27.3 years) from a full cohort of 845 who participated in research in which physiologic and serologic data on cardiovascular disease had been prospectively collected (1993-1997). Inclusion criteria were adults with traumatic-onset SCI. Average years to follow-up were 15.7 ± 0.9. Assessments were age, race, level and completeness of injury, duration of injury, blood pressure, body mass index, waist circumference, serum lipids, fasting glucose, hemoglobin A1c, and medications used. Primary outcome was meeting at least 3 of the criteria for cardiometabolic syndrome. RESULTS: The frequency of cardiometabolic syndrome increased significantly from 6.7% to 20.8% or 38.2% according to 2 definitions. It was significantly higher in Hispanics and apparently higher in women. Diabetes increased significantly by a factor of 6.7. CONCLUSION: Our data indicate clinically important increases in the frequency of cardiometabolic syndrome, especially among Hispanic and female participants, and a similar increase in diabetes among individuals aging with SCI. Clinical practice guidelines need to be customized for women and Hispanics with SCI.

Predictors of subclinical atherosclerosis in women with spinal cord injury.

BACKGROUND: Chronic spinal cord injury (SCI) is associated with an increase in risk factors for cardiovascular disease (CVD). In the general population, atherosclerosis in women occurs later than in men and usually presents differently. Associations between risk factors and incidence of CVD have not been studied in women with SCI. OBJECTIVE: To determine which risk factors for CVD are associated with increased carotid intima-media thickness (CIMT), a common indicator of atherosclerosis, in women with SCI. METHODS: One hundred and twenty-two females older than 18 years with traumatic SCI at least 2 years prior to entering the study were evaluated. Participants were asymptomatic and without evidence of CVD. Exclusion criteria were acute illness, overt heart disease, diabetes, and treatment with cardiac drugs, lipid-lowering medication, or antidiabetic agents. Measures for all participants were age, race, smoking status, level and completeness of injury, duration of injury, body mass index, serum lipids, fasting glucose, hemoglobin A1c, and ultrasonographic measurements of CIMT. Hierarchical multiple linear regression was conducted to predict CIMT from demographic and physiologic variables. RESULTS: Several variables were significantly correlated with CIMT during univariate analyses, including glucose, hemoglobin A1c, age, and race/ethnicity; but only age was significant in the hierarchical regression analysis. CONCLUSIONS: Our data indicate the importance of CVD in women with SCI.

Safety, tolerance, and efficacy of extended-release niacin monotherapy for treating dyslipidemia risks in persons with chronic tetraplegia: a randomized multicenter controlled trial.

OBJECTIVE: To test the safety, tolerance, and efficacy of extended-release niacin monotherapy on dyslipidemia in persons with chronic tetraplegia. DESIGN: Placebo-controlled, blinded, multicenter, randomized controlled trial. SETTING: Three spinal cord injury research/rehabilitation centers. PARTICIPANTS: Persons with chronic tetraplegia (N=54) and low plasma high-density lipoprotein cholesterol (HDL-C) levels. INTERVENTION: Extended-release niacin monotherapy (48 weeks; n=31) on a dose-titration schedule versus matched placebo (n=23). MAIN OUTCOME MEASURES: Safety was assessed by using percentages of treatment-emergent adverse events and increased levels of hepatic transaminases, uric acid, glycosylated hemoglobin, and fasting glucose. Tolerance was assessed by using participant reports for frequency and intensity of adverse effects of extended-release niacin. Primary effectiveness outcomes were fasting HDL-C level and plasma total cholesterol (TC)/HDL-C ratio. Secondary outcomes included plasma low-density lipoprotein cholesterol (LDL-C) and TC levels and LDL-C/HDL-C ratio. RESULTS: Significant increases in fasting HDL-C levels (24.5%) were accompanied by decreases in TC/HDL-C and LDL-C/HDL-C ratios, LDL-C levels, and TC levels (all P<.05). No evidence of sustained hepatotoxicity or hyperglycemia was observed. Treatment-emergent withdrawals (12.9%) accompanied flushing (n=1), hypotension/presyncope (n=1), and diarrhea (n=2). One subject experienced transient hyperuricemia. Other drug-reported symptoms did not differ from those for placebo. CONCLUSIONS: Extended-release niacin monotherapy is safe, tolerated, and effective for most persons with chronic tetraplegia. Special precautions for changes in bowel habits and postadministration hypotension should be observed.

Amenorrhea, pregnancy, and pregnancy outcomes in women following spinal cord injury: a retrospective cross-sectional study.

OBJECTIVE: To assess the prevalence of amenorrhea and pregnancy as well as pregnancy outcomes following spinal cord injury (SCI) in women. METHODS: In this retrospective cross-sectional study, women with SCI were interviewed regarding demographic data, details about the timing and type of SCI they sustained, whether the neurologic deficit was complete or incomplete, and reproductive history. The study was initiated in September 2001 and lasted 3 years. Measures were compared for significance with the level of injury and extent of neurologic deficit using descriptive statistics, analysis of variance, and 2-tailed t tests. RESULTS: Of 128 women, 53 (41.4%) had postinjury amenorrhea. The amenorrhea was transient in 50 of 53 women. SCI occurred at the mean (+/- SD) age of 27 +/- 9 years. In this group the lesions were at thoracic spine in 35 (66%), cervical spine in 16 (30%), and lumbar spine in 2 (4%). Neurologic deficit was complete in 31 women (58%) and incomplete in 22 (42%). The occurrence of amenorrhea was not influenced by the extent of neurologic deficit. Of 50 women who experienced transient amenorrhea, 10 (20%) became pregnant (6 livebirths, 4 elective terminations). Mean duration of amenorrhea was 7.96 +/- 10.9 months; there was no significant difference between mean duration of amenorrhea in women who got pregnant vs those who did not (6.4 +/- 3.8 months vs 15.8 +/- 30.8 months; P = .34). Pregnancy rate was significantly higher among those who sustained injury at a younger age (21.6 +/- 5.3 years vs 28.3 +/- 9.3 years; P = .033). CONCLUSIONS: Level of injury did not influence duration of amenorrhea or occurrence of pregnancy. Women who experience transient amenorrhea after SCI may achieve successful pregnancies.

Clinical significance of abnormal electrocardiographic findings in individuals aging with spinal injury and abnormal lipid profiles.

BACKGROUND: Cardiovascular risk factors are common in individuals with chronic spinal cord injury (SCI), and their prevalence increases with age. The actual prevalence of overt cardiovascular disease (CVD) in this population has not been well established. METHODS: Electrocardiograms (ECGs) were examined for abnormalities in 43 individuals with abnormal lipid profiles being followed in the outpatient SCI clinic of our institution. The mean age of the study population of predominantly men was 43 +/- 9.9 years and the mean duration of injury 16.6 +/- 8 years. RESULTS: ECG abnormalities were common and present in 60.5% of participants. ST-T wave abnormalities were the most commonly observed (35%). Evidence of previous myocardial infarction was present in 7% of all individuals and in 12% of those with ECG abnormalities. The only clinical parameter differentiating the group with normal vs abnormal ECG was the duration of injury (19.5 +/- 8 y vs 12 +/- 5 y; P = 0.0026). Analysis of variance showed that injury duration was the sole predictor of abnormal ECG with 68% accuracy (P = 0.006). Among those with ECG abnormalities, although no significant differences were detected between those with and without evidence of previous myocardial infarction, mean total cholesterol and low-density lipoprotein were higher, and mean high-density lipoprotein was lower. Mean age and injury duration were greater in those with evidence of previous myocardial infarction. CONCLUSION: Although age is an important risk factor for CVD in the population of individuals without disabilities, injury duration is at least as important as age in those with SCI. Our findings support the recommendation that individuals with SCI and abnormal lipids should be screened for CVD regardless of age.

Incidence and clinical correlates of increased serum creatine kinase levels in persons with spinal cord injury.

BACKGROUND: Elevated plasma levels of creatine kinase (CPK) are found in various neuromuscular conditions as a result of muscle damage and necrosis. Elevated CPK has also been described in elite wheelchair athletes and in able-bodied individuals after strenuous exercise. METHODS: The incidence of elevated CPK in individuals with spinal cord injury (SCI) has not been well established. We reviewed laboratory data from 581 individuals with chronic SCI. RESULTS: Most individuals with SCI (73.3%) had CPK values within 95% confidence intervals for able-bodied individuals. The highest levels were seen in African Americans (21% had CPK values > 95 confidence intervals for able-bodied individuals). Significant associations between CPK and the following independent variables were identified: impairment group, gender, duration of injury, body mass index, and ethnic group. Multiple regression analysis revealed significant correlations between CPK and oxygen consumption (beta .37, P < .01) in 32 individuals who performed the exercise test. CONCLUSIONS: These findings are important for clinicians evaluating symptoms of fatigue and myopathy in individuals with SCI.