Prevalence and risk factors for left ventricular diastolic dysfunction in systemic sclerosis: a multi-center study of CRDC cohort in China
2021
Left ventricular diastolic dysfunction (LVDD) is a common manifestation of cardiac involvement in systemic sclerosis (SSc), which is associated with increased mortality, but little is known about the risk factors. The aim is to determine the frequency and potential predictors of SSc-LVDD. We conducted a prospective multi-center cohort study, enrolling 784 SSc patients assessed by echocardiography between April 2008 and June 2019. Diagnosis of systemic sclerosis was according to the 2013 American College of Rheumatology (ACR)/the European League Against Rheumatism (EULAR) classification criteria. Data were compared between patients with and without LVDD, while univariate and multivariate regression analysis was performed to determine the factors independently associated with LVDD. LV diastolic dysfunction was present in 246/784 (31.4%) of the subjects. There were no significant differences in gender, BMI, or disease duration between the two groups. Around 40% of the patients in the SSc-LVDD group and in the SSc-non LVDD group had diffused cutaneous involvements. Factors independently associated with LV diastolic dysfunction in multivariable analysis included age at onset (OR 1.053, 95%CI 1.021–1.086, p = 0.001), pulmonary arterial hypertension (OR 3.057, 95%CI 1.468–6.367, p = 0.003), positivity of anti-RNP antibody (OR 2.455, 95%CI 1.049–5.745, p = 0.038), increased WBC count (OR 1.156, 95%CI 1.037–1.287, p = 0.009), elevated levels of uric acid (OR 1.003, 95%CI 1.000–1.006, p = 0.036), and triglyceride (OR 1.515, 95%CI 1.106–2.077, p = 0.010). LV diastolic dysfunction was prevalent in the SSc population. Advanced onset age, PAH, positive anti-RNP antibody, increased WBC count, and adverse metabolic status were independent risk factors for SSc-related LVDD.
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