Dystrophic metaplasia of brain cells is usually referred to as primary hypertension with mental disorders, which is the most common type of mental disorder associated with vascular disease, and refers to the mental disorders that accompany the development of primary hypertension. Psychiatric disorders associated with primary hypertension mainly manifest as neurotic-like syndrome, but also depressive syndrome, hallucinations, delusional states, etc. When hypertensive crisis occurs with a sharp increase in blood pressure, it often manifests as a disorder of consciousness. What are the tests needed for dystrophic metaplasia of brain cells? 1. Plasma cavity fluid pathogens Plasma cavity fluid is divided into exudate and leaky fluid. Exudate is mostly seen as a result of bacterial infection and parasitic infection, such as pleurisy, peritonitis, and pericarditis. 2, plasma cavity effusion Plasma cavity effusion refers to the excessive fluid accumulation in the thoracic, abdominal or pericardial cavity (always called plasma cavity) in disease conditions is always called plasma cavity effusion. General characterization is used to distinguish the nature of the effusion. Leaky fluid is usually pale yellow, clear, and has a low specific density. Exudate is mostly of various colors and dark, with a high specific density. 3, plasma cavity effusion cell count Cell count is to determine the number of cells in the effusion, generally with microscopic counting method and specimen dilution method, direct counting method is suitable for the detection of effusion with clear appearance and small number of cells. Plasma cavity, also called body cavity, includes pleural cavity, peritoneal cavity and pericardial cavity. The surface of plasma membrane is covered with mesothelial cells, and there is a narrow plasma membrane cavity between the dirty plasma membrane and the wall plasma membrane, which contains a small amount of thin fluid and plays a lubricating role. In pathological conditions such as tumor metastasis, inflammatory stimulation or circulatory disorders, pleural fluid, ascites and pericardial effusion can be formed and the effusion can be aspirated for cytological examination.