title: [Total serum calcium and corrected calcium as severity predictors in acute pancreatitis].
abstract: OBJECTIVE
  To evaluate total serum calcium (TC) and albumin-corrected calcium (ACC) as prognostic severity factors in acute pancreatitis (AP).
  
  
  METHODS
  Ninety-six patients were included in the study. They were diagnosed with AP and admitted to the Hospital Regional de Veracruz within the time frame of January 2010 to December 2012. AP severity was determined through the updated Atlanta Classification (2013). TC and ACC values were measured in the first 24hours of admittance and the percentages of sensitivity (S), specificity (Sp), positive predictive value (PPV), negative predictive value (NPV), positive likelihood ratio (LR+), and negative likelihood ratio (LR-) were calculated through ROC curves and contingency tables.
  
  
  RESULTS
  In accordance with the updated Atlanta Classification, 70 patients presented with mild AP, 17 with moderately severe AP, and 9 with severe AP. Of the patient total, 61.5% were women, and 69.8% presented with biliary etiology. The maximum TC cut-off point was 7.5mg/dL, with values of S, 67%; Sp, 82%; PPV, 27%, and NPV, 96%. The maximum ACC cut-off point was 7.5mg/dL, with values of S, 67%; Sp, 90%; PPV, 40%; NPV, 96%. Both had values similar to those of the Ranson and APACHE II prognostic scales.
  
  
  CONCLUSIONS
  TC and ACC, measured within the first 24hours, are useful severity predictors in acute pancreatitis, with sensitivity and predictive values comparable or superior to those of the conventional prognostic scales.
authors.affiliation: Departamento de Investigación, Hospital Regional de Veracruz, Veracruz, México; Facultad de Medicina «Miguel Alemán Valdés», Universidad Veracruzana, Veracruz, México. Electronic address: angelgj83@gmail.com.
authors.forename: A A
authors.initials: AA
authors.lastname: Gutiérrez-Jiménez
authors.affiliation: Facultad de Medicina «Miguel Alemán Valdés», Universidad Veracruzana, Veracruz, México.
authors.forename: E
authors.initials: E
authors.lastname: Castro-Jiménez
authors.affiliation: Departamento de Investigación, Hospital Regional de Veracruz, Veracruz, México.
authors.forename: R
authors.initials: R
authors.lastname: Lagunes-Córdoba
mesh_terms: D018806:APACHE; D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D015415:Biomarkers / Q000097:blood; D002118:Calcium / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000175:diagnosis / Q000209:etiology; D010195:Pancreatitis / Q000097:blood* / Q000175:diagnosis*; D011237:Predictive Value of Tests; D011379:Prognosis; D012709:Serum Albumin / Q000737:chemistry; D055815:Young Adult
chemical_list: D015415:Biomarkers; D012709:Serum Albumin; D002118:Calcium
keywords: Acute pancreatitis; Calcio corregido; Calcio sérico; Corrected calcium; Pancreatitis aguda; Serum calcium; Severidad; Severity