title: [Evaluation of the diagnostic test of index platelet counts / size spleen, as a predictor of the presence of esophageal varices in cirrhosis].
abstract: OBJECTIVE
  To evaluate the platelet count/spleen diameter (PC/SD) ratio as a non invasive diagnostic test to predict esophageal varices (VE) in patients with cirrhosis.
  
  
  METHODS
  Diagnostic test study, retrospective analysis. Data was collected from patients with diagnosis of liver cirrhosis at gastrointestinal unit of Hospital Nacional Daniel Alcides Carrión between September 2010 and January 2011. Using a PC/SD ratio with a cut off value of 909, sensitivity, specificity, Positive and negative predictive values, positive and negative likelihood ratios were calculate.
  
  
  RESULTS
  There were 47 patients; mean age of 60,74; etiology: alcoholic (25,5%); undeterminated (48,9%). Twenty-five percent patients had varices and 74,5% had no varices. The PC/SD ratio had a sensitivity of 40%, specificity of 75%, PPV of 82%, NPV 30%, LR (+) of 1,6 and LR (-) of 0,8.
  
  
  CONCLUSIONS
  The PC/SD ratio was not an effective diagnostic test for esophageal varices.
authors.affiliation: Médico Cirujano, Lima -- Perú.
authors.forename: Jorge R
authors.initials: JR
authors.lastname: Mosqueira
authors.forename: Johana B
authors.initials: JB
authors.lastname: Montiel
authors.forename: Diana
authors.initials: D
authors.lastname: Rodríguez
authors.forename: Eduardo
authors.initials: E
authors.lastname: Monge
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004932:Esophageal and Gastric Varices / Q000175:diagnosis* / Q000209:etiology*; D005260:Female; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D010976:Platelet Count; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D013154:Spleen / Q000473:pathology*; D055815:Young Adult