The use of one-piece U-shaped mesh and barbed sutures in laparoscopic sacrocolpopexy. / Empleo de malla en U de una pieza y sutura barbada durante la colposacropexia laparoscópica.

INTRODUCTION: Laparoscopic sacrocolpopexy (LS) is considered a safe and effective surgery for the treatment of pelvic organ prolapse (POP), but it requires expertise in laparoscopic surgery. The complexity of the intervention is due to the requirements of intracorporeal sutures and the manipulation of the mesh inside the cavity, which may be cumbersome. The barbed sutures (BS) simplify intracorporeal suturing and do not require knotting. Additionally, one-piece U-mesh (OP-UM) may facilitate handling, stabilization and tension adjustment. We describe our LS surgical technique using both materials to assess its feasibility, safety and effectiveness in a prospective series of patients. MATERIALS AND METHODS: A total of 7 patients with symptomatic pelvic organ prolapse were included. Urogynecological history, classification of the pelvic organ prolapse according to Baden-Walker and the application of the Prolapse Quality of Life questionnaire were performed in all cases. The non-absorbable polypropylene OP-UM (Uplift ™) was used. The posterior side of the single sling is sutured to the elevator anus muscles with two non-absorbable stitches. Two strands of BS (V-Loc™), tied at their ends, were used to attach the mesh to the vagina in two lines of continuous sutures in opposite directions. Self-anchoring tackers were used for promontofixation and BS for peritoneal closure. RESULTS: The median age was 60 years, the median time of the anterior branch mesh BS fixation was 23minutes (range 21,30 - 26,40min), intraoperative bleeding was minimal, and the median hospital stay was 3 days. No intraoperative complications were recorded, and no mesh erosions or recurrences were observed at a median follow-up of 14 months (range 3-25 months). All patients presented clinical improvement of the prolapse and were satisfied with surgery. We observed that the OP-UM self-stabilizes when it extends longitudinally into the abdominal cavity, reducing the need of the surgical assistant. The independent promontofixation of each part of the mesh (posterior and anterior) allows a more anatomical tension adjustment. Fixing the mesh to the vagina is fast and simple with our BS technique. CONCLUSIONS: The use of OP-UM and BS during LS is feasible, safe, effective and could simplify this surgical technique.

Predictive factors of infectious complications in the postoperative of percutaneous nephrolithotomy. / Factores predictores de complicaciones infecciosas en el postoperatorio de la nefrolitotomía percutánea.

OBJECTIVE: Infectious complications (IC) following percutaneous nephrolithotomy surgery (PCNL) can be life-threatening. Our objective was to analyse preoperative predictors of IC in PCNL. MATERIALS AND METHODS: A total of 203 patients who underwent PCNL were included in a prospective study between January 2013 and February 2016. A postoperative IC was defined as urinary infection/pyelonephritis, systemic inflammatory response syndrome or sepsis. The variables analysed were age, gender, number, size(cm) and side of stone; Hounsfield units,diabetes (insulin dependent or not), preoperative culture, isolated bacteria, multitract, bodymass index and surgical time (min). A multivariate forward stepwise (logistic regression) was performed. RESULTS: IC occurred in 30 patients (14.8%): 9 (4.4%) had urinary infection, 14 (6.9%) systemic inflammatory response syndrome and 7 (3.5%) sepsis. In addition, 13 (43.3%) had negative preoperative urine culture, 15 (50%) positive and in 2 (6.7%) was not available. On the logistic regression analysis, stone size (cm), insulin dependent diabetes and female sex were independently associated with increased risk of IC (odds ratio [OR] 1.03, 14.6 and 7.8, respectively; P=.0001). CONCLUSIONS: Patients with large stone burdens, insulin diabetes condition and female gender, should be counselled properly regarding postoperative infection risks and closely followed up to diagnose IC (specially sepsis) soon enough. Negative preoperative urine culture seems not reliable enough to exclude an infectious complication according to our results.

3+4 = 6? Implications of the stratification of localised Gleason 7 prostate cancer by number and percentage of positive biopsy cores in selecting patients for active surveillance. / ¿3 + 4 = 6? Implicaciones de la estratificación del cáncer de próstata localizado Gleason 7 por número y porcentaje de cilindros positivos de biopsia en la selección de pacientes para vigilancia activa.

OBJECTIVE: To determine whether the number and percentage of positive biopsy cores identify a Gleason 3+4 prostate cancer (PC) subgroup of similar biologic behaviour to Gleason 3+3. MATERIAL AND METHOD: An observational post-radical prostatectomy study was conducted of a cohort of 799 patients with localised low-risk (n=582, Gleason 6, PSA <10ng/ml and cT1c-2a) and favourable intermediate PC (n=217, Gleason 3+4, PSA ≤10 ng/ml and pT2abc). The Gleason 3+4 tumours were stratified by number (≤3 vs.>3) and by percentage of positive cores (≤33% vs. >33%). We analysed the tumours' association with the biochemical recurrence risk (BRR) and cancer-specific mortality (CSM). We conducted various predictive models using Cox regression and estimated (C-index) and compared their predictive capacity. RESULTS: With a median follow-up of 71 months, the BRR and CSM of the patient group with Gleason 3+4 tumours and a low number (≤3) and percentage (≤33%) of positive cores were not significantly different from those of the patients with Gleason 6 tumours. At 5 and 10 years, there were no significant differences in the number of biochemical recurrences, the probability of remaining free of biochemical recurrences, the number of deaths by PC or the probability of death by PC between the 2 groups. In contrast, the patients with Gleason 3+4 tumours and more than 33% of positive cores presented more deaths by PC than the patients with Gleason 6 tumours. At 10 years, the probability of CSM was significantly greater. This subgroup of tumours showed a significantly greater BRR (RR, 1.6; P=.02) and CSM (RR, 5.8, P≤.01) compared with the Gleason 6 tumours. The model with Gleason 3+4 stratified by the percentage of positive cores significantly improved the predictive capacity of BRR and CSM. CONCLUSIONS: Fewer than 3 cores and a percentage <33% of positive cores identifies a subgroup of Gleason 3+4 tumours with biological behaviour similar to Gleason 6 tumours. At 10 years, there were no differences in BRR and CSM between the 2 groups. These results provide evidence supporting active surveillance as an alternative for Gleason 3+4 tumours and low tumour extension in biopsy.