[Do postoperative drainage types modify outcomes after retrograde intrarenal surgery?].
BACKGROUND
The aim of the current study was to evaluate if the postoperative drainage type modified the outcomes after retrograde flexible ureteroscopy (f-URS) and intracorporeal lithotripsy f-URS for intrarenal stones.


METHODS
We retrospectively analyzed 162 procedures of f-URS for intrarenal stones between January 2010 and January 2013 at a single institute. Independent-sample t-tests and chi-square tests were used for comparisons of means and proportions between patients with ureteral stent or double pigtail stents.


RESULTS
There were 86 males (52.8%) and 77 females (47.3%) with a mean age of 52.8 ± 17 years. Double pigtail stents and ureteral stents were used in 117 (72.2%) and 45 (27.8%) cases, respectively. Cases with postoperative double pigtail stents had a longer operative time (96.2 ± 35 min vs 81.2 ± 5 min; P = 0.018) and were less often operated by an experienced surgeon (P = 0.001). Length of hospital staying (P = 0.804), postoperative complication (P = 0.148) and stone free status (P = 0.116) were not different between postoperative drainage by double pigtail and ureteral stents.


CONCLUSIONS
Postoperative drainage by double pigtail stent was used more often by surgeons in the beginning of their RIRS experience and was associated with longer operation time. Nevertheless, the postoperative drainage type did not modify the outcomes regarding the postoperative complication rate, the length of hospital staying and the stones free rate.
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France.
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A
Cerruti
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France.
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Lebdai
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France.
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F
Martin
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France.
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N
Hoarau
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France.
D
D
Chautard
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France.
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Culty
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France.
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Azzouzi
Service d'urologie, CHU d'Angers, 5, rue Larrey, 49000 Angers, France. Electronic address: PiBigot@chu-angers.fr.
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P
Bigot
D004322:Drainage / Q000379:methods*; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000601:surgery*; D008096:Lithotripsy; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care / Q000379:methods*; D012189:Retrospective Studies; D015607:Stents; D016896:Treatment Outcome; D018666:Ureteroscopy
Calculs rénaux; Double pigtail stent; Holmium laser lithotripsy; Postoperative drainage; Renal calculi; Retrograde intrarenal surgery; Sonde JJ; Sonde double J; Sonde urétérale; Urolithiasis; Urétérorénoscopie souple