Spinal Cord Injury Tied to Greater Risk for Heart Disease

Researchers analyzed data from Korea's National Health Insurance Service on 5083 patients with cervical, thoracic, or lumbar SCI (mean age, 58; 75% men) and 1:3 age- and sex-matched non-SCI controls.
The study endpoint was new-onset myocardial infarction (MI), heart failure (HF), or atrial fibrillation (AF) during a mean follow-up of 4.3 years.
Covariates included low income, living in an urban or rural area, alcohol consumption, smoking status, physical activity engagement, body mass index, and blood pressure; comorbidities included hypertension, type 2 diabetes, and dyslipidemia.

A total of 169 MI events (7.3 per 1000 person-years), 426 HF events (18.8 per 1000 person-years), and 158 AF events (6.8 per 1000 person-years) occurred among SCI survivors.
After adjustment, SCI survivors had a higher risk for MI (adjusted hazard ratio [aHR], 2.41), HF (aHR, 2.24), and AF (aHR, 1.84) than controls.
Among SCI survivors with a disability, the risks increased with disability severity, and those with severe disability had the highest risks for MI (aHR, 3.74), HF (aHR, 3.96), and AF (aHR, 3.32).
Cervical and lumbar SCI survivors had an increased risk for heart disease compared with controls regardless of disability, and the risk was slightly higher for those with a disability; for cervical SCI survivors with a disability, aHRs for MI, HF, and AF, respectively, were 2.30, 2.05, and 1.73; for lumbar SCI survivors with a disability, aHRs were 2.79, 2.35, and 2.47.
Thoracic SCI survivors with disability had a higher risk for MI (aHR, 5.62) and HF (aHR, 3.31) than controls.

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