👉 The eastern fluid, also known as the pericardial fluid, is a clear or colorless liquid found within the pericardium, the sac surrounding the heart. It serves as a lubricant, reducing friction between the heart and its surrounding structures during cardiac movements. This fluid is constantly produced by the pericardium and absorbed by the bloodstream, maintaining a delicate balance that ensures efficient heart function. Abnormalities in the composition or quantity of the eastern fluid can indicate various cardiac conditions, such as inflammation, infection, or heart failure.