Functional bladder neck obstruction. Voiding cysto-urethrography and pressure-flow measurements

Area of Science:

• Urology
• Diagnostic Imaging
• Physiology

Background:

• Functional bladder neck obstruction (FBNO) is a condition affecting urination.
• Accurate diagnosis is crucial for effective management and preventing complications.

Purpose of the Study:

• To evaluate the diagnostic utility of voiding cysto-urethrography (VCUG) with pressure-flow measurements in patients with FBNO.
• To compare urodynamic and imaging findings in FBNO patients versus healthy controls.

Main Methods:

• VCUG and simultaneous pressure-flow measurements were performed on 24 patients diagnosed with FBNO.
• Findings were compared to those of 10 healthy younger males.

Main Results:

• Patients with FBNO exhibited a statistically significant smaller bladder neck diameter (p < 0.01).
• Seventy-nine percent of FBNO patients showed absent or minimal bladder neck funnelling during voiding.
• Pressure-flow recordings confirmed infravesical obstruction in the patient group.

Conclusions:

• VCUG, particularly when combined with pressure-flow studies, is essential for diagnosing functional bladder neck obstruction.
• The characteristic findings of smaller diameter and reduced funnelling support VCUG's role in FBNO diagnosis.