Furosemide: overview and clinical applications

Furosemide is a high-potency diuretic mainly used to treat edematous diseases (such as heart failure, cirrhosis and ascites) and hypertension. It promotes water excretion by inhibiting the reabsorption of sodium and chloride by the renal tubules. The content will revolve aroundMechanism of action, indications, usage and dosage, adverse reactions and manufacturerExpand and focus on analyzing its clinical applications and precautions.

Mechanism of action and indications

Furosemide belongs toloop diuretics, by inhibiting the Na-K-2Cl co-transporter in the thick ascending branch of the renal medullary loop, reducing the reabsorption of sodium and chloride, thereby increasing urine excretion. Mainly used clinically: 1)acute pulmonary edemaand emergency diuresis for chronic heart failure; 2) liver cirrhosis, nephrotic syndrome, etc.refractory edema;3) Assist in controlling high blood pressure. It has a rapid onset of action (30 minutes for oral administration and 5 minutes for intravenous injection), but attention should be paid to the risk of electrolyte imbalance.

Usage, Dosage and Special Populations

The usual adult dose is20-80mg/day, administered orally or intravenously in divided doses, adjusted according to efficacy. Severe edema may increase to 600mg/day. Children need to calculate based on body weight (1-2mg/kg).The elderly and those with renal insufficiencyThe dosage needs to be reduced to avoid excessive diuresis leading to hypokalemia. Pregnant women (risk level C) should only be used when the benefits outweigh the risks and should be used with caution during lactation.

Adverse reactions and drug interactions

Common side effects includeHypokalemia, hyponatremia, ototoxicity (during high-dose intravenous injection)and hyperuricemia. Combination with aminoglycoside antibiotics may aggravate ototoxicity, and serum potassium needs to be monitored when combined with cardiac glycosides. Long-term use requires regular checks of electrolytes and kidney function.

Summary and production information

Furosemide is an important drug in the treatment of edema and hypertension, but its medication needs to be strictly individualized. Major domestic manufacturers includeShanghai Xinyi Pharmaceutical Factory (product name: furosemide), China Resources Shuanghe Pharmaceutical (furosemide tablets)Wait. When using it, you should follow your doctor's advice and balance efficacy and safety.

Quote sources:

1. "Chinese Pharmacopoeia" 2020 Edition
2. Furosemide Drug Instructions (Shanghai Xinyi Pharmaceutical Factory)
3. US FDA drug database (Furosemide)
4. Clinical Medication Reference (Editor-in-Chief Zhang Shige)