right atrial pressure

Right atrial pressure (RAP) measures the blood pressure in the right atrium of the heart, indicating how much blood is returning to the heart and how well the heart is pumping it out. It reflects the filling status of the heart’s right side and can help identify conditions like fluid overload, heart failure, or dehydration. Elevated RAP suggests increased blood volume or resistance to blood flow, while low RAP indicates low blood volume or decreased filling. It's an important parameter used by healthcare providers to assess heart function and guide treatment decisions.