Acute uremic syndrome, accurately called acute injury, is characterized by a short period of oliguria, anuria, accompanied by significant nausea, vomiting, chest tightness, breath-holding, significantly elevated blood pressure, and in some cases, panic. The name acute uremia is not entirely accurate, uremia is the end stage of chronic renal failure, so acute uremia should be called acute kidney injury. In acute kidney injury, the kidneys become impaired in drainage within a short period of time, and the patient will have little or no urine, and the toxins will accumulate in the digestive tract at a significantly higher level, causing nausea and vomiting. Many patients with acute kidney injury have heart failure, and patients will have symptoms of chest tightness and breath-holding. Most acute kidney injuries are accompanied by elevated blood pressure, which is sometimes difficult to control and is mainly related to water retention. If patients with acute kidney injury are accompanied by hyperkalemia, which affects the function of the heart, then patients will have symptoms of heartburn.