What can you tell me about a urodynamic test?

Here are some...: Urodynamic test is to confirm if the function between the bladder and urinary sphincter is in their normal coherent coordination by measuring the pressure inside bladder at voiding, investigating the pressure profile of the urethra, observing the relaxation or contraction of sphincter during urination. These are done with placing specially designed catheter to bladder and urethra, & electrodes....