Furosemide is a tab diuretic, mainly a potassium excretory diuretic, with significant diuretic effect, suitable for edema caused by congestive heart failure and various factors leading to renal insufficiency, with the following side effects: 1. 3. prolonged application and induced anion disorders leading to arrhythmias. 4. patients may suffer from thirst, weakness, peripheral muscle pain and other side effects. 5. may cause blurred vision, light sensitivity, dizziness, headache, blurred vision and other optic nerve damage. 6. may also cause endocrine system dysfunction, so for patients with hyperglycemia or previous history of gout disease, a small amount of furosemide should be applied. Therefore, for patients with hyperglycemia or previous history of gout disease, furosemide should be applied in small amounts.