The NI (non-invasive) clinical platform EV1000NI and its accessories are a monitoring system that shows hemodynamic parameters derived from continuous noninvasive measurements of blood pressure waves. The EV1000NI system helps physicians in the assessment of the patient's physiological status and supports the clinical decision related to hemodynamic optimization. The EV1000NI clinical platform is indicated for use in patients over 18 years of age in whom the balance between cardiac function, fluid status and vascular resistance requires continuous evaluation. Additionally EV1000NI is indicated for use in patients with co-morbidities for which hemodynamic optimization and invasive measures are difficult. EV1000NI measures non-invasive blood pressure and the associated hemodynamic parameters.