What is the primary purpose of urodynamics?

• A. Assess lower urinary tract function
• B. Evaluate kidney filtration
• C. Treat infection
• D. Measure blood pressure

Answer: (A)

Urodynamics is about how the lower urinary tract stores and releases urine. It uses measurements of pressure, flow, and capacity during filling and voiding to reveal how the bladder and outlet are behaving—detrusor muscle activity, bladder compliance, and urethral resistance. This objective insight helps determine whether symptoms come from bladder overactivity, underactivity, or outlet obstruction, guiding management of urinary incontinence and other lower urinary tract disorders. It doesn't assess kidney filtration, it doesn't treat infections, and it doesn't measure systemic blood pressure, which are outside the scope of this test.