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OBJECTIVES: Retrograde intrarenal
surgery (RIRS) has become an important alternative for
the treatment of kidney stones due to its increased safety
and efficiency. The purpose of this study is to compare
efficacy and safety features of RIRS against percutaneous
nephrolithotomy (PCNL) for the treatment of 2 - 3.5 cm
METHODS: 142 cases (106 RIRS and 36 PCNL)
encompassing 2 - 3.5 cm kidney stones that have been
treated in our center between December 2009 and
December 2011 have been considered. Demographic
variables, stone characteristics, surgical stay and surgical
time have been evaluated. Additionally, the complication prerate
and success rate after one and two procedures
(retreatment) have also been assessed. Student`s T,
Mann-Whitney U y Chi2 - V Cramer (p=0.05) tests were
used for statistical analysis.
RESULTS: There are not statistically significant differences
in demographic or stone variables. The calculated
mean surgical time was lower for PCNL (85 min) than
for RIRS (112 min). Mean hospital stay was statistically
significantly shorter in RIRS (16 h vs. 98 h in RIRS,
p=0.001). PCNL exhibited a higher global complication
rate of 19.4% vs. 6.6% for RIRS (p=0.001). PCNL also
showed a higher successful rate (80.6% vs. 73.6%
for RIRS), although this difference was not statistically
significant (p=0.40). When comparing the success rate
after a second procedure, PCNL results in 94.3% vs.
93.5% for RIRS (p=0.88).
CONCLUSION: RIRS was found to be a safe and
efficient procedure with a short hospital stay. Overall,
RIRS can be considered as an alternative to PCNL for the
treatment of renal stones smaller than 3.5 cm.
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Revista Internacional de Urología indexada y peer-reviewed, fundada en 1944, dirigida a toda la comunidad científica. Aquí encontrarás las últimas novedades y hallazgos urológicos. Publicamos 10 números anuales.