Interpretation of Urodynamics

Interpretation of Urodynamics consists of the 3 C’s and 2 S’s. The 3 C refers to the sphincter’s Capacity, Compliance, and Competence. The 2 S’s refer to Sensation and Stability.

Bladder capacity is studied to determine the amount of fluid the bladder holds. Compliance is the ability of the bladder wall to distend. The relationship between change in the bladder volume and change in the detrusor pressure is measured. The EFP or (End Filling Pressure) should be below 15cnH20. The EFP (End Filling Pressure) of 40cmH20 or greater may lead to high risk to the upper tract. The competence of the sphincter is the ability of the external striated muscle to hold urine and to relax and release urine. This can be evaluated by using VLPP (Valsalva Leak Point Pressure). The VLPP is automatically marked and calculated with a simple keystroke.

Sensations of the patient are recorded during the filling phase. Volume, pressures, and psychosocial environment affect a patient’s feelings. According to ICS, Morpheus® has conveniently placed study markers to indicate these sensations.

Stability refers to the detrusor function during filling. Normal detrusor function allows bladder filling with little or no change in pressure. Detrusor overactivity is a urodynamic observation characterized by involuntary detrusor contractions during the filling phase, which may be spontaneous or provoked. Convenient study markers are easily placed during the study with a click of a button or tap of the touch screen.

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