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Pulse pressure (PP) is a complex physiologic trait affected by many variables, including left ventricular contractility (reflected by stroke volume), arterial stiffness, and central-to-brachial amplification. The impact of age on the relationship between stroke volume and central or brachial PP has not been investigated.

Increased arterial stiffness has been reported in subjects with systemic lupus erythematosus (SLE) compared with healthy controls, and this association is partially reverted by immunosuppressive treatment. In SLE, indexes of organ damage are related to a poor clinical status and worse prognosis independently from the activity of the disease. Data are controversial about the association between organ damage and arterial stiffness in SLE.