Anders H Tennøe1, Klaus Murbræch2, Johanna C Andreassen2, Håvard Fretheim1, Torhild Garen3, Einar Gude2, Arne Andreassen2, Svend Aakhus4, Øyvind Molberg1, Anna-Maria Hoffmann-Vold5. 1. Department of Rheumatology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway. 2. Department of Cardiology, Oslo University Hospital, Oslo, Norway. 3. Department of Rheumatology, Oslo University Hospital, Oslo, Norway. 4. Department of Circulation and Imaging, Faculty of Medicine and Health Sciences, NTNU, Norwegian University of Science and Technology, Trondheim, Norway; Clinic of Cardiology, St. Olav's Hospital, Trondheim, Norway. 5. Department of Rheumatology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway. Electronic address: a.m.hoffmann-vold@medisin.uio.no.
Abstract
BACKGROUND: Primary cardiac affection is common and is a major cause of death in systemic sclerosis (SSc), but there are knowledge gaps regarding the effect of cardiac dysfunction on mortality. OBJECTIVES: The purpose of this study was to evaluate diastolic function in a large, unselected SSc cohort and assess the effect of diastolic dysfunction (DD) on mortality. METHODS: SSc patients followed prospectively at the Oslo University Hospital from 2003 to 2016 with available echocardiographies and matched control subjects were included. DD was assessed by echocardiography according to the 2016 American Society of Echocardiography/European Association of Cardiovascular Imaging guidelines. Pulmonary hypertension (PH) was diagnosed by right heart catheterization. Vital status was available for all patients. Cox regression analyses with hazards ratios (HRs) were conducted. RESULTS: Diastolic function was assessed in 275 SSc patients at baseline and in 186 patients at follow-up. At baseline, 46 of the 275 SSc patients (17%) were diagnosed with DD and 195 (71%) had normal diastolic function. After a median follow-up of 3.4 years (interquartile range: 1.6 to 6.2 years), the proportion of DD increased from 17% to 29%. During follow-up, 57% of patients with DD at baseline died, compared with 13% of patients with normal diastolic function. At baseline, 86 patients had performed right heart catheterization, and 43 were diagnosed with PH; of these 60% deceased. In multivariable Cox regression analyses, DD was a stronger predictor of death (HR: 3.7; 95% CI: 1.69 to 8.14; c-index 0.89) than PH (HR: 2.0; 95% CI: 1.1 to 3.9; c-index 0.84). CONCLUSIONS: DD is frequent in SSc, and the presence of DD is associated with high mortality. DD exceeds PH with respect to predicting mortality.
BACKGROUND: Primary cardiac affection is common and is a major cause of death in systemic sclerosis (SSc), but there are knowledge gaps regarding the effect of cardiac dysfunction on mortality. OBJECTIVES: The purpose of this study was to evaluate diastolic function in a large, unselected SSc cohort and assess the effect of diastolic dysfunction (DD) on mortality. METHODS: SSc patients followed prospectively at the Oslo University Hospital from 2003 to 2016 with available echocardiographies and matched control subjects were included. DD was assessed by echocardiography according to the 2016 American Society of Echocardiography/European Association of Cardiovascular Imaging guidelines. Pulmonary hypertension (PH) was diagnosed by right heart catheterization. Vital status was available for all patients. Cox regression analyses with hazards ratios (HRs) were conducted. RESULTS: Diastolic function was assessed in 275 SSc patients at baseline and in 186 patients at follow-up. At baseline, 46 of the 275 SSc patients (17%) were diagnosed with DD and 195 (71%) had normal diastolic function. After a median follow-up of 3.4 years (interquartile range: 1.6 to 6.2 years), the proportion of DD increased from 17% to 29%. During follow-up, 57% of patients with DD at baseline died, compared with 13% of patients with normal diastolic function. At baseline, 86 patients had performed right heart catheterization, and 43 were diagnosed with PH; of these 60% deceased. In multivariable Cox regression analyses, DD was a stronger predictor of death (HR: 3.7; 95% CI: 1.69 to 8.14; c-index 0.89) than PH (HR: 2.0; 95% CI: 1.1 to 3.9; c-index 0.84). CONCLUSIONS:DD is frequent in SSc, and the presence of DD is associated with high mortality. DD exceeds PH with respect to predicting mortality.
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