The main ingredients of Lactate Ringer Solution are sodium lactate, sodium chloride, potassium chloride and calcium chloride. The main effect is to regulate fluid and electrolyte balance for metabolic acidosis or dehydration diseases. Especially potassium deficiency has great impact on heart, such as lower limb edema caused by heart failure, if the diuretic dosage is too large will lead to dehydration and electrolyte disorders, electrolyte disorders can be corrected by supplementing Ringer lactate injection, 500ml at a time for adults. can be increased or decreased according to the condition, heart failure patients are due to the decline of heart function, the speed of drug administration should not be too fast, otherwise it will lead to palpitations, chest tightness, dyspnea, heart failure It can be used alone or in combination with vitamins in clinical application. Blood pressure should be monitored during the use of the drug and should be discontinued in time if it rises.