The effect of infundibulopelvic angle on the outcome of flexible ureteroscopic lithotripsy
10.3760/cma.j.issn.1000-6702.2016.06.007
- VernacularTitle:肾盂肾下盏漏斗角小于30°患者软镜下钬激光碎石术的初步经验
- Author:
Sixing YANG
;
Chao SONG
;
Lingqi LIU
;
Wenbiao LIAO
;
Tianpeng WU
- Publication Type:Journal Article
- Keywords:
Lower calyx stone;
Infundibulopelvic angle;
Flexible ureteroscope;
Ho : YAG laser lithotripsy
- From:
Chinese Journal of Urology
2016;37(6):423-426
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate if the flexible ureteroscopy could treat stones located in lower calyx with the infundibulopelvic angle (IPA) less than 30°.Methods Thirty-six patients with inferior caliceal calculi on whom flexible ureteroscopic procedures were performed between November 2009 and June 2015 were reviewed.The mean age of the patients was 52.1 years (34-71),with the mean stone diameter of (1.5 ± 0.8) cm (1.2-2.6 cm).IPA was smaller than 30° in all 36 cases,which confirmed by CTU examination.IPA was less than 10° in 15 patients,between 11 ° and 20° in 13 patients and between 21 ° and 30° in 8 patients.Results The success rate was 63.9％ (23/36 patients) in patients with IPA smaller than 30° after first session of procedure,and the stone free rate reached 100％ after the second session of procedure.The mean operation duration was (95.5 ± 31.4) min(51-127 min).The mean hospital stay after operation was(4.1 ± 1.2)days (3-5 days).No major complications were recorded and no patients needed to convert to open surgery.Double J tube was removed after 4 weeks postoperatively.Patients were followed up for 4-12 months,during which ultrasound and CT scan were used for stone detection.Conclusions The small IPA (＜30°) negatively affected the SFR in the first session operation.However,its negative effect was solvable by using modern endoscopes.A complete stone clearance was achievable even in case of unfavorable anatomic conditions in experienced hand.
