Increased intake of salt causes fluid retention. The doctor should be called if the patient eats a large amount of salt. In patients with heart failure, the sense of thirst can be misleading. The patient may drink too much fluid, which can worsen body swelling and shortness of breath. Doctors will tell patients when fluid limits are needed and how much fluid they can drink.
Diuretics compensate for the body's tendency to retain excess fluid.
Over time, they can become less effective and lead to excess fluid retention. Examine the body for swelling Excess fluid is often discovered by the patient. Clothes may fit differently, or the feet or ankles may appear swollen. Check for swelling by pressing a finger for 30 seconds over an area on the body. Check the pulse in any artery near the surface of the body.