Moderate
Established
Açıklama
Sequential nephron blockade with furosemide and thiazide diuretics produces a synergistic diuretic effect that can rapidly cause severe hypovolemia, hyponatremia, and hypokalemia.
Mekanizma
Furosemide inhibits the thick ascending limb NKCC2; HCTZ inhibits the distal convoluted tubule NCC transporter. Blocking consecutive nephron segments produces additive (and sometimes supra-additive) natriuresis.
Klinik Önemi
Electrolyte emergencies (severe hyponatremia, hypokalemia, metabolic alkalosis) and acute kidney injury from hypovolemia have been reported; reserved for refractory edema under close monitoring.
Yönetim
Use only in refractory edema under specialist supervision; monitor electrolytes daily when initiating; ensure adequate potassium replacement; reassess frequently.