Determination system for determining a heart failure risk

The invention relates to a determination system for determining a heart failure risk for a subject (4). The determination system (1) comprises a photoplethysmogram providing unit for providing a photoplethysmogram of the subject and a heart failure risk determination unit for determining the heart failure risk based on the provided photoplethysmogram. A photoplethysmogram can be provided in an unobtrusive way by using a photoplethysmogram sensor without requiring a physician's attendance. In particular, it is not necessarily required to measure electrocardiograms, to carry out blood tests and to perform a coronary angiography for determining the heart failure risk. The heart failure risk can therefore be determined in a technically relatively simple way without requiring a physician's attendance.