What causes nocturnal polyuria?
Nocturnal polyuria occurs in both men and women. It becomes more common as people age. Nocturnal polyuria is caused by: • Congestive heart failure — A condition where the heart muscle weakens and can not pump blood efficiently throughout the body. If the heart can not pump efficiently, fluids can build up in your extremities (eg, legs). Swollen ankles are one sign of heart failure. During the night, your body absorbs this excess fluid, changing it into urine, and creating a need for you to urinate in the middle of the night. • Hypoalbuminemia — An abnormally low blood level of albumin. Normally, albumin is the most plentiful protein in human blood and the key to the regulation of its osmotic pressure. Albumin helps blood hold on to its fluidity, so as albumin levels decrease, fluid eases out of the bloodstream and body as urine. • Venous insufficiency — Venous insufficiency is a condition in which the flow of blood through the veins is impaired. When this happens, fluids can build u
