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15.09.2020 | Original Article

Percutaneous nephrolithotomy in patients with spinal cord injury: should all these patients be automatically assigned a Guy’s stone score of 4?

Zeitschrift:
World Journal of Urology
Autoren:
Fabio C. M. Torricelli, Fabio C. Vicentini, Lucas Zanetti, Rodrigo Perrella, Giovanni S. Marchini, Alexandre Danilovic, Carlos A. Batagello, Claudio B. Murta, Joaquim F. A. Claro, Miguel Srougi, William C. Nahas, Eduardo Mazzucchi
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s00345-020-03443-1) contains supplementary material, which is available to authorized users.
Fabio C. M. Torricelli and Fabio C. Vicentini contributed equally to this manuscript.

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Abstract

Purpose

To assess the complication and stone-free rates of PCNL in patients with spinal cord injury (SCI) and to evaluate whether this population should be assigned a Guy’s stone score (GSS) of 4.

Methods

A case–control study was conducted, and electronic charts were reviewed to search for patients with SCI, bladder dysfunction, and kidney stones who had undergone PCNL. Control cases were randomly selected from among patients with complete staghorn calculus (GSS = 4).

Results

One hundred and seventeen patients were included. Patients with SCI had a significant shorter operative time (119 vs. 141 min; p = 0.018). There were no significant differences between the groups in terms of the patients’ position, number of renal tracts, bleeding or transfusion rate; however, there was a significantly higher complication rate (23.1% vs. 7.8%; p = 0.009) and a longer hospital stay (5.8 vs. 3.1 days; p = 0.002) among patients with SCI. With regards to the stone-free rate in patients with different grades of GSS patients with SCI who had a GSS of 1 had a stone-free rate of 85.7%, while those with a GSS of 2, 3, or 4 had 50%, 50%, and 31.5%, respectively (p = 0.024). Only patients with a GSS of 4 in the SCI group had outcomes that were similar to those of control patients (31.5% vs. 31.6%).

Conclusion

Patients with SCI should not be automatically assigned GSS 4. Stone-free rate is related to stone burden in these patients, although they do show a higher complication rate and a longer hospital stay than non-neurological patients.

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