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Related Experiment Video

Updated: Jun 22, 2026

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing

Published on: August 14, 2019

Urethrography in men: conventional technique versus clamp method.

Juan D Berná-Mestre¹, Juan D Berná-Serna, Martín Aparicio-Mesón

¹Department of Radiology, University Hospital of Salamanca, Paseo San Vicente s/n, 37007 Salamanca, Spain. mesjubermu@hotmail.com

|June 30, 2009

Summary

The clamp method for retrograde urethrography (RUG) is more effective and less painful than the conventional balloon method. Drip infusion further enhances patient comfort during RUG and voiding cystourethrography (VCUG).

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Area of Science:

Urology
Radiology
Medical Imaging

Background:

Retrograde urethrography (RUG) and voiding cystourethrography (VCUG) are common diagnostic procedures.
The conventional balloon method for RUG can cause significant patient discomfort and may not always be effective.
Alternative methods are needed to improve the adequacy and tolerability of these examinations.

Purpose of the Study:

To compare the examination adequacy and patient discomfort between the conventional balloon method and a clamp method for RUG.
To evaluate the use of drip infusion for contrast administration in RUG and VCUG.

Main Methods:

A prospective study involving 80 men suspected of urethral stenosis.
Patients were randomized into a control group (conventional balloon RUG) and a clamp group (clamp method RUG and VCUG with drip infusion).
Pain levels were assessed using verbal descriptor and visual analogue scales.

Main Results:

The clamp method achieved 100% success in RUG, with most patients reporting no or mild pain.
The conventional balloon method had a 69% success rate and caused significant pain.
Drip infusion successfully facilitated bladder filling for VCUG in 96% of patients.

Conclusions:

The clamp method is a well-tolerated and effective alternative to the conventional balloon method for RUG.
Drip infusion enhances patient comfort by eliminating the need for syringes and catheters during RUG and VCUG.
These improved techniques increase diagnostic evaluation success and patient satisfaction.