In congestive hea failure patients
High-Yield Explanation
Diuretics are given orally in hypeension, given slow iv in CCF for rapid onset of action. Diuretics although donot treat the pathologic changes in HF they are used as main stay for symptomatic treatment to remove excess fluid.Switching to iv or infusion bypasses the GI tract and helps in over coming diuretic resistance. Ref: Goodman and Gillman 13th ed. kidney.