Category: Clinical Stones: PCNL

MP7-21 - Staghorn morphometry relation with Clavien-Dindo score after percutaneous nephrolithotomy

Fri, Sep 21
10:00 AM - 12:00 PM

Introduction & Objective :

Staghorn stone morphometry and its distribution within de collecting system has been used to predict the requirement of tracts and stages needed for percutaneous nephrolithotomy (PCNL). Limited data on the relationship between postoperative complications (POC) and staghorn stone morphometry are available. This study compares the morphometry and its relationship with the postoperative complications.


Methods :

We performed 103 PCNL in 92 patients, 8 underwent more than one procedure. Stone morphometry was calculated using OsiriX software. All patients were categorized according to complexity model in type I: 35 (38.1%), type II: 43 (46.7%) and type III 14 (15.2%). Postoperative complications were compared against patient-related variables and morphometric characteristics. 


Results : Of 92 patients, 31 (33.6%) had at least one POC. We correlate each group with the risk of postoperative infectious complications, type I OR 0.8 (0.3-1.6, p= 0.78), type II OR 1.5 (1.1-2.5, p=0.05), type III OR 3.6 (2.7-5.7, p=0.01). Only 4 patients required red blood cell transfusion, all of them from type III group. Clavien III postoperative complications were all from type III group.


Conclusions :

Staghorn morphometry type II and III were associated with postoperative complications and higher Clavien-Dindo score. Increased complexity based on staghorn morphometry can be used as a predictor for postoperative complications.

Carlos Martinez Arroyo

Academic staff
Hospital General Dr. Manuel Gea González
Mexico City, Distrito Federal, Mexico

Ulises Cristobal Sanchez Aquino

Urology resident at Hospital General Dr. Manuel Gea Gonzalez
Mexico, Distrito Federal, Mexico

Carlos Pacheco Gahbler

Urology Chief Division
Hospital General Dr. Manuel Gea González
Mexico City, Distrito Federal, Mexico