For a kidney stone approximately 6 mm in size, what is the recommended management according to the notes?

• A. Intravenous fluids
• B. Pass spontaneously
• C. Invasive procedure
• D. Diet changes

Answer: (A)

Stone passage depends on size, and about a 6 mm stone is in a range where conservative management focused on maximizing passage is used. Rehydration with intravenous fluids is chosen because it increases urine flow, promotes diuresis, and helps the stone move through the urinary tract rather than getting stuck. This approach addresses the immediate goal of letting the stone pass spontaneously while controlling pain and monitoring for any signs of complication. Diet changes mainly influence prevention over the longer term and don’t acutely aid passage, and an invasive procedure is reserved if the stone fails to pass or if there are signs of obstruction or infection.