Normal urodynamic parameters in women: part II--invasive urodynamics

Area of Science:

• Urology
• Medical Engineering
• Physiology

Background:

• Urodynamic evaluation assesses lower urinary tract (LUT) function.
• Invasive urodynamic techniques are essential for comprehensive assessment.
• Establishing normal reference ranges is critical for accurate diagnosis.

Purpose of the Study:

• To provide reference ranges for normal variability in invasive urodynamic parameters.
• To define "normality" ranges for key urodynamic measures.
• To supplement previous work on non-invasive urodynamics.

Main Methods:

• Literature review of MEDLINE, International Continence Society abstracts, and standardization reports (1956-2011).
• Search terms included cystometry, urethral pressure profilometry, leak point pressure, video urodynamics (UDS), and electromyography.
• Analysis of clinical data to establish normality ranges.

Main Results:

• Normal values for urodynamic parameters showed wide variability in the literature.
• Defined "normality" ranges for most parameters were established using clinical data.
• This review focuses on invasive urodynamic techniques.

Conclusions:

• Urodynamic evaluation is the best available tool for LUT function assessment, despite not being purely physiological.
• Normality in urodynamics can be defined, but interpretation requires consideration of patient-specific characteristics.
• Clinical context, patient complaints, and symptoms are vital for interpreting urodynamic test results.