Prospective evaluation of kidney displacement during supine mini-percutaneous nephrolithotomy: Incidence, significance, and analysis of predictive factors

Authors

  • Başak Gülpınar Ankara University School of Medicine Department of Radiology
  • Aykut Akıncı Ankara University School of Medicine Department of Urology
  • Evren Süer Ankara University School of Medicine Department of Urology
  • Adem Sancı Ankara University School of Medicine Department of Urology
  • Muammer Babayiğit Ankara University School of Medicine Department of Urology
  • Yyaşar Bedük Ankara University School of Medicine Department of Urology
  • Sümer Baltacı Ankara University School of Medicine Department of Urology
  • Mehmet Ilker Gökce Ankara university school of medicine department of urology

DOI:

https://doi.org/10.5489/cuaj.5247

Abstract

Introduction: Kidney displacement may alter the quality of renal puncture during percutaneous nephrolithotomy (PCNL). The aim of this study was to identify the rate of kidney displacement and parameters associated with kidney displacement in patients who underwent supine mini-PCNL.

Methods: Data of 98 consecutive patients who underwent mini- PCNL was collected prospectively. The patients were grouped as displacement-positive vs. -negative. The parameters collected were age, gender, body mass index, side of the kidney, punctured calyx, fluoroscopy time to successful puncture and tract dilation, stonefree and complication rates, stone diameter, length of the renal artery, and quantity of peri-renal and abdominal fat. Groups were compared for the above listed parameters and logistic regression analysis was performed to identify factors associated with kidney displacement.

Results: There were 34 and 64 patients in the displacement-positive and -negative groups, respectively. Groups were similar for stonefree and complication rates. Fluoroscopy time to puncture and tract dilation were longer in the displacement-positive group. Groups were different for renal artery length and peri-renal fat measurements. In multivariate analysis, lower pole puncture, renal artery length, and peri-renal fat measurement were found to be independent predictors of kidney displacement.

Conclusions: Kidney displacement does not alter the success and complication rates, but is associated with longer fluoroscopy times during supine PCNL. In the current study, parameters in preoperative non-contrast computerized tomography (NCCT) associated with kidney displacement were identified. We recommend surgeons evaluate and take into account these parameters during preoperative planning to establish better outcomes and diminish fluoroscopy times.

Downloads

Download data is not yet available.

Downloads

Published

2018-06-07

How to Cite

Gülpınar, B., Akıncı, A., Süer, E., Sancı, A., Babayiğit, M., Bedük, Y., Baltacı, S., & Gökce, M. I. (2018). Prospective evaluation of kidney displacement during supine mini-percutaneous nephrolithotomy: Incidence, significance, and analysis of predictive factors. Canadian Urological Association Journal, 12(11). https://doi.org/10.5489/cuaj.5247

Issue

Vol. 12 No. 11 (2018): CUAJ November

Section

Original Research

License

You, the Author(s), assign your copyright in and to the Article to the Canadian Urological Association. This means that you may not, without the prior written permission of the CUA:

  • Post the Article on any Web site
  • Translate or authorize a translation of the Article
  • Copy or otherwise reproduce the Article, in any format, beyond what is permitted under Canadian copyright law, or authorize others to do so
  • Copy or otherwise reproduce portions of the Article, including tables and figures, beyond what is permitted under Canadian copyright law, or authorize others to do so.

The CUA encourages use for non-commercial educational purposes and will not unreasonably deny any such permission request.

You retain your moral rights in and to the Article. This means that the CUA may not assert its copyright in such a way that would negatively reflect on your reputation or your right to be associated with the Article.

The CUA also requires you to warrant the following:

  • That you are the Author(s) and sole owner(s), that the Article is original and unpublished and that you have not previously assigned copyright or granted a licence to any other third party;
  • That all individuals who have made a substantive contribution to the article are acknowledged;
  • That the Article does not infringe any proprietary right of any third party and that you have received the permissions necessary to include the work of others in the Article; and
  • That the Article does not libel or violate the privacy rights of any third party.