👉 Cardiolysis, also known as pericardial effusion or cardiac fluid accumulation, is a medical condition in which the fluid that normally circulates within the heart's chambers and blood vessels becomes trapped between layers of tissue called the pleural and subpleural membranes. This fluid buildup can cause symptoms such as chest pain, shortness of breath, nausea, and other conditions depending on the level and type of fluid accumulation. The exact mechanism behind cardiolysis varies in different tissues and organs,