Which test evaluates the pressure in the bladder and its function during filling and emptying?

A urodynamic study is the correct choice for evaluating the pressure in the bladder as well as its function during both the filling and emptying phases. This test involves a series of measurements to assess how well the bladder holds urine, how well it empties, and the pressures involved during these processes.

During a urodynamic study, various parameters are monitored, such as bladder pressure, abdominal pressure, and flow rates. This comprehensive assessment helps to diagnose conditions such as urinary incontinence, bladder dysfunction, and outlet obstruction. The detailed insights gained from this study enable healthcare providers to formulate appropriate treatment plans for patients with micturition disorders.

In contrast, other tests like urinalysis are primarily used to examine the composition of urine and detect various health issues, such as infections or metabolic disorders. Cystoscopy is a procedure that allows direct visualization of the bladder and urethra but does not assess pressures or functional dynamics. Ultrasound can provide images of the bladder and other organs, but it does not measure bladder pressures or evaluate the functional aspects of bladder filling and emptying.