Diuresis used to increase urine output and decrease extracellular fluid volume. Substances in the circulation can also increase the amount of circulating fluid by increasing the osmolarity of the blood. This has the effect of pulling water from the interstitial space, making more water available in the blood and causing the kidney to compensate by removing it as urine. In hypotension, often colloids are used intravenously to increase circulating volume in themselves, but as they exert a certain amount of osmotic pressure, water is therefore also moved, further increasing circulating volume. As blood pressure increases, the kidney removes the excess fluid
O Blood and Water O Blood and Water O Blood and Water (Polish: "O krwi i wodo"), also known as conversion prayer, is a prayer to the Divine Mercy revealed by Jesus to saint Faustina Kowalska. Its full text, as reported in the "Diary", is: "O blood and water, which gushed forth from the heart of Jesus as a fountain of mercy for us, I/we trust in you". In the Polish original it is: "O krwi i wodo, któraś wytrysnęła z serca Jezusowego jako zdrój miłosierdzia dla nas, ufam/-y tobie". It may be regarded as an extension of the jaculatory prayer "Jezu, ufam tobie"