What is a sign of a successful catheterization for residual urine?

A successful catheterization for measuring residual urine is indicated by the measurement of urine volume collected after a patient attempts to void. The purpose of this procedure is to determine how much urine remains in the bladder after the patient urinates. A clear output of urine volume provides objective data about bladder function and urinary retention, helping to assess the patient's urinary health.

Decreased pain during urination may suggest improvement in urinary conditions, but it does not specifically indicate successful catheterization. Improved appetite and increased blood pressure do not directly relate to the effectiveness of catheterization for assessing residual urine. Therefore, the measurement of urine volume is the most relevant sign that accurately reflects the success and purpose of the catheterization procedure.