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A study on comparative outcomes of percutaneous nephrolithotomy in prone, supine, and flank positions

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Abstract

Purpose

To compare percutaneous nephrolithotomy (PCNL) safety and efficacy in prone, supine, and flank positions.

Methods

A total number of 150 candidates for PCNL were randomly assigned into prone, supine, and flank groups. Patients in groups 1 and 2 underwent fluoroscopy-guided PCNL in prone and supine positions, respectively, while patients in group 3 underwent ultrasonography-guided PCNL in lateral position.

Results

The success rates were 92, 86, and 88 % in prone, supine, and flank positions, respectively (P = 0.7). The mean access duration was 6.9 ± 4.2, 11.1 ± 5.8, and 10.8 ± 4.1 min (P = 0.08), and the mean operation time was 68.7 ± 37.4, 54.2 ± 25.1 and 74.4 ± 26.9 min (P = 0.04) in prone, supine, and flank groups, respectively. Pyelocaliceal perforation occurred in 2 (4 %), 2 (4 %), and 3 (6 %) patients in prone, supine, and flank positions, respectively (P = 1).

Conclusion

We believe that PCNL in both supine and flank positions are as safe and relatively effective as prone position in experienced hands. Preference of the surgeon and proper case selection for each procedure is very important and necessary.

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Conflict of interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Urology and Nephrology Research Center (UNRC), Shohada Medical Center, Shahid Beheshti University, M.C. (SBMU), No. 103, Boostan 9th St., Pasdaran Ave., P.O.Box: 1666677951, Tehran, I.R. Iran

    Hossein Karami, Reza Mohammadi & Behzad Lotfi

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  1. Hossein Karami
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  2. Reza Mohammadi
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  3. Behzad Lotfi
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Correspondence to Hossein Karami.

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Karami, H., Mohammadi, R. & Lotfi, B. A study on comparative outcomes of percutaneous nephrolithotomy in prone, supine, and flank positions. World J Urol 31, 1225–1230 (2013). https://doi.org/10.1007/s00345-012-0889-y

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  • DOI: https://doi.org/10.1007/s00345-012-0889-y

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