BACKGROUND: Aortic stiffness and left ventricular (LV) diastolic dysfunction are common and associated with increased morbidity and mortality in systemic lupus erythematosus (SLE). HYPOTHESIS: In SLE, aortic stiffness and LV diastolic dysfunction may be associated. METHODS: This 6-year-duration, cross-sectional, and controlled study was conducted in 76 SLE patients (69 women; mean age, 37 ± 12 years) and 26 age- and sex-matched healthy controls. All subjects underwent clinical and laboratory evaluations and transesophageal echocardiography (TEE) to assess LV diastolic function and stiffness of the descending thoracic aorta using the pressure-strain elastic modulus (PSEM). To validate results using PSEM, aortic strain, stiffness, and distensibility were assessed. RESULTS: Patients as compared with controls had higher PSEM (8.14 ± 4.25 vs 5.97 ± 2.31 U, P < 0.001) and had lower mitral inflow E/A and septal and lateral mitral annulus tissue Doppler E'/A' velocity ratios, longer isovolumic relaxation time, lower septal and lateral mitral annulus E' velocities, and higher mitral E/septal E' and mitral E/lateral E' velocity ratios (all P ≤ 0.03), all indicative of LV diastolic dysfunction. In patients, PSEM was correlated with parameters of LV diastolic dysfunction (all P < 0.05), was independently negatively associated with E/A and E'/A' ratios and E' velocities, and was positively associated with E/E' ratios (P ≤ 0.02 for each parameter and P < 0.001 for all parameters as a profile). Aortic strain, stiffness, and distensibility were also worse in patients than in controls (all P < 0.05) and were correlated with parameters of LV diastolic dysfunction (all P ≤ 0.03). CONCLUSIONS: Aortic stiffness is independently associated with LV diastolic dysfunction in young adult patients with SLE.
BACKGROUND:Aortic stiffness and left ventricular (LV) diastolic dysfunction are common and associated with increased morbidity and mortality in systemic lupus erythematosus (SLE). HYPOTHESIS: In SLE, aortic stiffness and LV diastolic dysfunction may be associated. METHODS: This 6-year-duration, cross-sectional, and controlled study was conducted in 76 SLEpatients (69 women; mean age, 37 ± 12 years) and 26 age- and sex-matched healthy controls. All subjects underwent clinical and laboratory evaluations and transesophageal echocardiography (TEE) to assess LV diastolic function and stiffness of the descending thoracic aorta using the pressure-strain elastic modulus (PSEM). To validate results using PSEM, aortic strain, stiffness, and distensibility were assessed. RESULTS:Patients as compared with controls had higher PSEM (8.14 ± 4.25 vs 5.97 ± 2.31 U, P < 0.001) and had lower mitral inflow E/A and septal and lateral mitral annulus tissue Doppler E'/A' velocity ratios, longer isovolumic relaxation time, lower septal and lateral mitral annulus E' velocities, and higher mitral E/septal E' and mitral E/lateral E' velocity ratios (all P ≤ 0.03), all indicative of LV diastolic dysfunction. In patients, PSEM was correlated with parameters of LV diastolic dysfunction (all P < 0.05), was independently negatively associated with E/A and E'/A' ratios and E' velocities, and was positively associated with E/E' ratios (P ≤ 0.02 for each parameter and P < 0.001 for all parameters as a profile). Aortic strain, stiffness, and distensibility were also worse in patients than in controls (all P < 0.05) and were correlated with parameters of LV diastolic dysfunction (all P ≤ 0.03). CONCLUSIONS:Aortic stiffness is independently associated with LV diastolic dysfunction in young adult patients with SLE.
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