The degree and criteria for tricuspid regurgitation are based on the rate of regurgitation, the presence of tricuspid valve dysfunction, an assessment of whether the patient’s right heart function is affected, whether surgery is needed, and whether there are other problems. Usually, the heart ultrasound will show that tricuspid regurgitation is less than 20% in mild cases, between 20% and 40% in moderate cases, and more than 40% in severe cases. If tricuspid regurgitation is mild after the examination, the health effects are not significant and can be observed for a long time without special treatment. If the test results suggest moderate or severe tricuspid regurgitation, a specialist evaluation is needed and surgery is required if necessary.