The most common causes of hypokalemia are 1. Long-term fasting or insufficient food intake, or insufficient potassium salt supplementation in fluid rehydration. 2. Vomiting, continuous gastrointestinal decompression, and small intestinal fistula, resulting in loss of potassium from extrarenal pathways. 3. Potassium Excessive excretion from the kidneys, such as the use of diuretics such as furosemide and diuretic acid, potassium loss due to renal tubular disease, and excessive mineralocorticoids can cause continued potassium loss when blood potassium is not high. 4. Metabolic acidosis, use glucose and insulin Treatment or cell uptake of water and nutrients can cause potassium to enter the cells from the extracellular fluid

Potassium supplementation can be used for treatment.

(1) Treat the primary disease first.

(2) Oral potassium supplementation: Give 1~2g of potassium chloride or potassium citrate, 3 times a day.

(3) Intravenous potassium supplementation: 10% potassium chloride intravenous infusion is commonly used. Precautions for intravenous potassium supplementation: ①Total amount: Supplement 4-8 g of potassium daily according to the degree of hypokalemia. ②Concentration: Generally not greater than 3‰. ③Speed: no more than 80 drops/min. If it exceeds this speed, it must be guarded by a dedicated person and comprehensive monitoring of heart, blood potassium and urine output must be carried out. ④Urine output: Generally, potassium supplementation is required when urine output is above 30 ml/h. ⑤ Intravenous injection is prohibited: to avoid a sudden increase in blood potassium, which may cause cardiac arrest.

Eat foods rich in potassium, or go to the hospital for potassium injections, usually potassium chloride.

Fruits rich in potassium include hawthorn, peaches, and bananas.

Vegetables rich in potassium are mainly fungi, such as kelp, fungus, mushrooms, seaweed, etc.

When using medicine to supplement potassium, you should pay attention to urinating freely to supplement potassium.