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RETRACTED ARTICLE: Obturator nerve block transurethral surgery for bladder cancer: comparison of inguinal and intravesical approaches: prospective randomized trial

Abstract

Aim

Transurethral resection of bladder tumors close to these areas may stimulate the obturator nerve, causing violent adductor contraction and possible inadvertent bladder perforation. To avoid this reaction, local anesthetic blockade of the obturator nerve as it passes through the obturator canal is effective in stopping adductor spasm during spinal anesthesia.

Methods

Forty-one patients undergoing (transurethral resection of bladder tumor) TUR-BT with spinal anesthesia who required (obturator nerve block) ONB were included in the study. After spinal anesthesia, ONB was performed with an inguinal approach (group 1) (n = 21) or an intravesical approach (group 2) (n = 20). In this study, we used 10 ml of 2 % lidocaine to perform the ONB.

Results

The mean age of patients was 60.8 ± 7.5 years. The groups were not different with regards to age, tumor localization and tumor size. There were two bladder perforations in group 1 and six perforations in group 2 (p = 0.130). However, the efficacy of ONB was significantly higher in inguinal approach group compared to intravesical approach group (p = 0.032).

Conclusion

Obturator nerve block plays an additive role on the quality of analgesia for bladder surgery. Our data suggests that identification of the obturator nerve with ultrasound is easy and the block can be assessed by observing avoidance of bladder spasm.

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Change history

  • 07 February 2020

    The Editor-in-Chief has retracted this article [1] because it shows significant overlap with a previously published article by Pladzyk et al. [2].

  • 07 February 2020

    The Editor-in-Chief has retracted this article [1] because it shows significant overlap with a previously published article by Pladzyk et al. [2].

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Acknowledgments

Special thanks to associated professor Dr. Aydin Köşüş for his valuable analysis and support in this paper’s statistical analysis and comment.

Conflict of interest

None declared.

Ethical standard

The Research Ethics Committee of the Kırıkkale University Faculty of Medicine reviewed and approved this study, which has been conducted following Helsinki recommendations and European Union and Turkish regulations.

Informed consent

The patient’s consent has been obtained.

Author information

Correspondence to F. Hızlı.

Additional information

The Editor-in-Chief has retracted this article because it shows significant overlap with a previously published article by Pladzyk et al. F. Hızlı, G. Argun, O. Güven, and H. Başar agree with this retraction. İ. Güney, A. İ. Arık, S. Başay, H. Günaydın, and A. Köşüş have not responded to any correspondence from the publisher about this retraction.

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Hızlı, F., Argun, G., Güney, İ. et al. RETRACTED ARTICLE: Obturator nerve block transurethral surgery for bladder cancer: comparison of inguinal and intravesical approaches: prospective randomized trial. Ir J Med Sci 185, 555–560 (2016). https://doi.org/10.1007/s11845-015-1300-y

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Keywords

  • Urinary bladder tumor
  • Obturator nerve block
  • Anesthesia
  • Inguinal approach
  • Intravesical approach