In a urodynamic study, what is measured to evaluate bladder storage and emptying?

In a urodynamic study, bladder pressure is a critical measurement used to evaluate both the storage and emptying functions of the bladder. This study assesses how well the bladder and urethra are functioning in terms of keeping urine in (storage) and releasing urine (emptying). By measuring bladder pressure during filling and voiding phases, healthcare providers can determine if there are any abnormalities in bladder function, such as weak bladder muscles or conditions that cause increased pressure during storage.

Monitoring bladder pressure helps identify issues related to detrusor muscle function and any detrusor overactivity, which can lead to urinary incontinence or retention. By understanding the pressure dynamics, clinicians can better diagnose conditions like neurogenic bladder and detrusor underactivity, guiding appropriate treatment plans.

While bladder volume is indeed important in the assessment of bladder function, it primarily reflects how much urine is present rather than the dynamics of pressure during storage and voiding. Urine flow rate does provide insight into emptying efficiency but does not address the underlying pressures affecting bladder function. Urine pH is more relevant in the evaluation of metabolic or infectious conditions rather than urodynamic function.