Factores de riesgo preoperatorios en pacientes con pielonefritis xantogranulomatosa sometidos a nefrectomía.

Objetivo: Identificar factores de riesgo asociados a complicaciones mayores en pacientes con pielonefritis xantogranulomatosa sometidos a nefrectomía.

MÉtodo: Análisis retrospectivo de expedientes clínicos de pacientes con pielonefritis xantogranulomatosa sometidos a nefrectomía. Se analizaron el sexo, el índice de masa corporal, el índice de comorbilidad de Charlson, la clasificación del estado físico de la American Society of Anesthesiologists, la etapa de Malek, el conteo leucocitario y los valores de creatinina.

Factores predictores del estado libre de cálculos en la primera ureteroscopia flexible con litotricia láser.

Introduction: Flexible ureteroscopy and laser fragmentation (FURSL) is a minimally invasive modality for surgical treatment of renal stones. Inadequate selection of patients for this treatment generates a cost-effectiveness unbalance.

Objective: To know the stone-free rate predictors in a single surgical time in patients undergoing FURSL.

[Tasa libre de litos sin complicación mayor como definición de éxito en nefrolitotomía percutánea].

Introduction: Success in percutaneous nephrolithotomy (PCNL) is defined as a stone-free status; however, major complications are highly common and have been reported as a secondary outcome.

Objective: To propose a new definition of PCNL success that comprises a stone free rate without major complications and a risk scale to predict this outcome.

Methods: Historical cohort of patients undergoing PCNL.

Rearrangement of the Guy's stone score improves prediction of stone-free rate after percutaneous nephrolithotomy.

Objective: We propose a modification of the original Guy's Stone Score (GSS) to hold on 20 % of prognostic discrimination among groups which makes this score a more reliable resource for risk assessment in patients undergoing percutaneous nephrolithotomy (PCNL).

Material And Methods: Historical cohort of 126 patients undergoing PCNL from December 2010 to November 2014 was included in the survey. Every patient was classified according to the original GSS.

[Tamsulosin, oxybutynin or their combination in the treatment of ureteral stent-related symptoms].

Background: The aim of this paper is to compare the efficacy of tamsulosin, oxybutynin or their combination for the treatment of symptoms related to double J stent (DJS).

Methods: Randomized clinical non-blinded trial with three arms (tamsulosin, oxybutynin or combination) to assess the improvement of ureteral related symptoms with DJS with the questionnaire of Ureteral Stent Symptom Questionnaire (USSQ) and the adverse effects of treatment. Evaluations were made at 7 and 21 days after the placement of DJS.

[Stone free rate assesment after percutaneous nephrolithotomy using nephrolitometric nomogram].

Background: Percutaneous nephrolithotomy remains the standard of care for kidney stones larger than 2cm. Therefore, setting a prognosis for complete stone resolution through this method is essential. The prognostic tools available have limited prediction.

[Prognostic factors of morbimortality in patients with emphysematous pyelonephritis].

Background: Emphysematous pyelonephritis (EPN) is a severe infection of the urinary tract, caused by gas accumulation within the collecting system, the renal parenchyma, and/or the perirenal tissue. The cause of this infection is not known at all; however, it has been suggested that it is produced by the glucose fermentation provoked by enterobacteriaceae or anaerobic organisms. Our objective was to evaluate the predictors of morbidity and mortality in patients diagnosed with EPN.

[The use of S.T.O.N.E. scale in patients undergoing percutaneous nephrolithotomy].

Objectives: The aim of this study was to apply the S.T.O.

[Intrarectal povidone-iodine to reduce the risk of genitourinary infections after transrectal prostate biopsy].

Background: The aim of this study is to compare two different preparations in patients undergoing transrectal prostate biopsies samples (TPBS) and assess the prevalence of genitourinary infections (GUI).

Methods: A historical cohort of patients undergoing TBPS for suspected prostate cancer. Two groups were compared: one with endorectal lubricant jelly and another with the addition of a povidone-iodine lubricating jelly.

[Developing critical skills to analyze research reports in nuclear medicine].

Objective: To estimate the impact of an educational strategy aimed at developing critical reading of research reports among medical residents enrolled in a nuclear medicine course.

Methods: We carried out an intervention study to measure the degree to which students developed critical reading skills in a one month period (May-June, 2007). We developed an instrument that included five summaries of research articles in nuclear medicine and 96 sentences that measured four indicators (interpret, judge, propose, and assessment of technical and technological aspects).

[Urachus cystopexy: new technique for bladder suspension associated to the Burch's technique in the treatment of cystocele and stress urinary incontinence. Long-term follow-up].

Objectives: To compare long term efficacy and morbidity in patients with stress urinary incontinence treated using Burch's colpopexy versus Burch's colpopexy plus urachus-cystopexy.

Methods: Retrospective, longitudinal comparative, observational study in 129 patients with stress urinary incontinence (SUI) or mixed urinary incontinence (MUI). Fifty four patients underwent Burch's colpopexy (group B) and 75 patients underwent Burch's colpopexy and urachus-cystopexy (group B U).

[Two methods for transrectal ultrasound-guided biopsy of the prostate: systematic vs. guided for suspect echogenic lesion].

Objective: We undertook this study to determine the efficiency of ultrasound-guided transrectal prostate biopsy applying two techniques: systematic extended vs. suspicious sonographic areas.

Methods: Medical files and histopathological reports were reviewed of patients who were treated at the Specialties Hospital of the 21st Century Medical National Center in Mexico City with suspicion of prostate cancer (T1, T2 and PSA <10 ng/ml).

[Perinephric abscess: associated factors and mortality].

Objectives: To determine predisposing factors in perinephric abscesses and to find events associated with unfavourable outcome.

Methods: We carried out a clinical, descriptive, retrospective and cross-sectional study, including 23 patients diagnosed of perinephric abscess admitted to our hospital.

Results: In patients with perinephric abscess, clinical charts included diabetes mellitus in 65.

[Fournier's gangrene. Experience of the CMN SXXI Hospital].

Objectives: To evaluate and review the Fournier's gangrene clinical presentation, initial APACHE II score and integral treatment of patients affected in HECMNSXXI.

Methods: Retrospective, descriptive and cross-sectional study in 40 patients with Fournier's gangrene diagnosis, accepted for treatment in HECMNSXXI who gather inclusion criteria, from February 1996 to February 2006.

Results: Patients were between 21 and 93 yr old.

[Penile necrosis: a review of 18 cases at the Hospital de Especialidades Centro Médico nacional Siglo XXI].

Objectives: To report the experience in the management of penile necrosis at our hospital.

Methods: We performed a review of the medical records with the diagnosis of penile necrosis at the Department of the Urology of the Hospital de Especialidades Centro Médico nacional Siglo XXI from January 1995 to March 2005.

Results: 18 cases of penile necrosis were found, with ages from 28 to 78 years (mean age 58.

[A case of renal cell carcinoma in horseshoe kidney].

Horseshoe kidney has a frequency of 1 in 1000 renal paiss. Diseases in this type of kidneys have anatomical particularities that should be taken into account during surgery. We present the case of a renal cell carcinoma in this type of renal fusion.