The excess fluid, primarily salt and water, builds up in various locations in the body and leads to an increase in weight, swelling in the legs and arms (peripheral edema), and/or fluid in the abdomen (ascites). Eventually, the fluid enters the air spaces in the lungs (pulmonary edema) reduces the amount of oxygen that can enter the blood, leading to Anemia and causes shortness of breath (dyspnea) or enters pleural space by transudation (pleural effusion which also causes dyspnea), which is the best indicator of estimating central venous pressure is increased. It can also cause swelling of the face. Fluid can also collect in the lungs when lying down at night, possibly making nighttime breathing and sleeping difficult (paroxysmal nocturnal dyspnea). Complications Congestive heart failure is the most common result of fluid overload. Also, it may be associated with hyponatremia <unk>  hyponatremia).
Hypervolemia
Dehydration
Hypovolemia
Hyperosmolar syndrome
Isotonic hyponatremia
Hypotonic hyponatremia
Cholemia
Renal tubular acidosis