Effuusiota

Effuusiota is the Finnish term for effusion, a general concept describing the movement of fluid through a barrier or its abnormal accumulation in a body cavity. In medical use, effusion refers to the unwanted buildup of fluid in a space, most commonly pleural effusion (fluid between the lungs and chest wall) and pericardial effusion (fluid around the heart). Other examples include peritoneal effusion, such as ascites. Causes vary and include heart failure, infection, inflammation, malignancy, liver or kidney disease, and postoperative states. Symptoms depend on location and may include shortness of breath, chest pain, abdominal distension, or fatigue. Diagnosis relies on imaging (ultrasound, chest X-ray, CT) and analysis of the fluid obtained by tapping (paracentesis, thoracentesis, or pericardiocentesis) to determine etiology and guide treatment. Management focuses on addressing the underlying cause and, when appropriate, draining the fluid to relieve symptoms.

In physics, effusion describes the flow of gas through a small aperture into a region of lower pressure. The rate of effusion is described by Graham’s law and is inversely proportional to the square root of the molar mass of the gas. The term derives from Latin effusio, from effundere, “to pour out.” The Finnish form effuusiota thus covers both the medical concept of fluid buildup and the physical concept of gas flow, depending on context.