Liquid paraffin is superior to 2% lidocaine gel in reducing urethral pain during urodynamic study in men: A pilot study

Authors

  • Kobi Stav,

    Corresponding author
    1. Neurourology Division, Department of Urology, Assaf Harofeh Medical Center (Affiliated to Sackler School of Medicine, Tel Aviv University), Zerifin, Israel
    • Correspondence to: Kobi Stav, M.D., Neurourology Division, Department of Urology, Assaf-Harofeh Medical Center, Zerifin 70300, Israel. E-mail: stavkobi@gmail.com

    Search for more papers by this author
  • Eyal Taleb,

    1. Neurourology Division, Department of Urology, Assaf Harofeh Medical Center (Affiliated to Sackler School of Medicine, Tel Aviv University), Zerifin, Israel
    Search for more papers by this author
  • Itay M. Sabler,

    1. Neurourology Division, Department of Urology, Assaf Harofeh Medical Center (Affiliated to Sackler School of Medicine, Tel Aviv University), Zerifin, Israel
    Search for more papers by this author
  • Yoram I. Siegel,

    1. Neurourology Division, Department of Urology, Assaf Harofeh Medical Center (Affiliated to Sackler School of Medicine, Tel Aviv University), Zerifin, Israel
    Search for more papers by this author
  • Ilia Beberashvili,

    1. Nephrology Departement, Assaf Harofeh Medical Center (Affiliated to Sackler School of Medicine, Tel Aviv University), Zerifin, Israel
    Search for more papers by this author
  • Amnon Zisman

    1. Neurourology Division, Department of Urology, Assaf Harofeh Medical Center (Affiliated to Sackler School of Medicine, Tel Aviv University), Zerifin, Israel
    Search for more papers by this author

  • Christopher Chapple led the peer-review process as the Associate Editor responsible for the paper.
  • Conflict of interest: none.

Abstract

Aims

To compare the pain perception between intraurethral instillation of 2% lidocaine gel and liquid paraffin during Urodynamic study in men.

Methods

A randomized, single-blind comparison trial was conducted. Forty men scheduled to undergo multichannel Urodynamic study were randomized to receive either 10 ml of 2% lidocaine gel (group 1, n = 20) or 10 ml of liquid paraffin (group 2, n = 20). Patients recorded their pain on a 0–10 visual analog scale prior to lubricant instillation, immediately after lubricant instillation, after the introduction of the Urodynamic catheter, 5 and 30 min after the catheter was taken out.

Results

pain scores were significantly higher in group 1 compared to group 2 immediately after the instillation of the lubricants (4.2 ± 1.5 vs. 2.6 ± 0.9, P < 0.001) and after catheterization (4.8 ± 1.5 vs. 3.5 ± 1.1, P < 0.01). There were no differences in the pain scores between the two groups in the other time points that were evaluated.

Conclusions

Liquid paraffin is more efficient than 2% lidocaine gel in reducing urethral pain during Urodynamic study in men. Pain scores were specifically better during the instillation of the lubricant and during the delivery of the urethral catheter. Neurourol. Urodynam. 34:450–453, 2015. © 2014 Wiley Periodicals, Inc.

Ancillary