title: [Complications in patients undergoing ultrasound-guided percutaneous nephrostomy and associated factors].
abstract: BACKGROUND
  For the treatment of obstructive hydronephrosis that compromises renal function, procedures are required to decrease pressure such as intrarenal ultrasound-guided percutaneous nephrostomy, which leads to complications like any procedure. General objective: To determine the complications of patients undergoing ultrasound-guided percutaneous nephrostomy and factors associated with their development.
  
  
  METHODS
  Cross-analytical, observational, retrospective study that included patients undergoing ultrasound-guided percutaneous nephrostomy in UMAE 25 IMSS, from 1 March, 2013 to 1 March, 2014. Electronic medical records were obtained: age, gender, history of diabetes mellitus, hypertension, smoking, and alcoholism, and whether or not there was the development of post-procedure complications. The association was analyzed by chi square test and Student's t test, taking as significant a value of p = 0.05 and the magnitude of association was measured with 95% confidence interval with SPSS v.18.0.
  
  
  RESULTS
  A total of 84 patients aged 31-79 years were analyzed, corresponding to 64.3% of women. Nephrostomy subsequent complications occurred in 19.0% of cases, of which diabetes mellitus comorbidities occurred in 56.2%, hypertension in 62.5%, obesity 75.0%, smoking 31.2%, and alcoholism 43.7%, with a statistically significant association (p = 0.019), with the presence of obesity hematuria being the most commonly observed complication.
  
  
  CONCLUSIONS
  Despite the presence of several comorbidities in our population, only the influence of obesity was associated with the development of complications in patients who underwent ultrasound-guided nephrostomy.
authors.affiliation: Servicio de Radiología, Hospital Regional de Especialidades N.o 25, Centro Médico Nacional del Noreste, Monterrey, N.L., México.
authors.forename: José Antonio
authors.initials: JA
authors.lastname: Rodríguez-Pontones
authors.affiliation: Servicio de Radiología, Hospital Regional de Especialidades N.o 25, Centro Médico Nacional del Noreste, Monterrey, N.L., México.
authors.forename: David
authors.initials: D
authors.lastname: Bretón-Reyes
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009403:Nephrostomy, Percutaneous / Q000379:methods*; D011183:Postoperative Complications / Q000453:epidemiology* / Q000209:etiology*; D012189:Retrospective Studies; D012307:Risk Factors; D025321:Surgery, Computer-Assisted; D018084:Ultrasonography, Interventional