title: The clinical usefulness of initial serum procalcitonin as an aggravation predictor in a hepatobiliary tract infection at emergency department.
abstract: The ability to predict future clinical deterioration early in patients who present to an emergency care center with a hepatobiliary tract infection is difficult. We studied the clinical usefulness of the initial serum levels of procalcitonin in a hepatobiliary tract infection as an indicator for predicting aggravation in the early stages.
  
  
  
  Of the patients who presented with the clinical symptoms of a hepatobiliary tract infection, 99 were diagnosed with a hepatobiliary tract infection by imaging studies and subsequently enrolled in the study. Laboratory tests were obtained in the early stage of disease after presentation to an emergency care center. We assessed and compared the serum levels of many early inflammatory markers (white blood cell [WBC] counts, C-reactive protein and procalcitonin) between patients whose symptoms were initially stable upon arrival to an emergency care center but then deteriorated to, those whose symptoms remained consistently stable. Thus, we examined if the above serum markers are useful in predicting the possibility of future symptom aggravation.
  
  
  
  Of a total of 99 patients, 27 were assigned to the symptom aggravation group. The serum levels of WBC counts and C-reactive protein in the aggravation group were elevated. However, the median value (interquartile range) of procalcitonin was relatively increased at 2.28 (0.41-7.84 ng/ml), demonstrating a significant difference.
  
  
  
  In conclusion, initial serum levels of procalcitonin might be used as an indicator for aggravation in patients with hepatobiliary tract infection at the emergency department, even though there is hemodynamic stability.
authors.forename: W J
authors.initials: WJ
authors.lastname: Jeong
authors.affiliation: Department of Emergency Medicine, College of Medicine, The Catholic University of Korea, St. Vincent Hospital, Suwon, Korea.
authors.forename: B H
authors.initials: BH
authors.lastname: So
authors.forename: H M
authors.initials: HM
authors.lastname: Kim
authors.forename: J H
authors.initials: JH
authors.lastname: Wee
authors.forename: J H
authors.initials: JH
authors.lastname: Park
authors.forename: S P
authors.initials: SP
authors.lastname: Choi
authors.forename: S H
authors.initials: SH
authors.lastname: Woo
mesh_terms: D000328:Adult; D001660:Biliary Tract Diseases / Q000150:complications / Q000175:diagnosis*; D015415:Biomarkers / Q000097:blood; D002097:C-Reactive Protein; D002116:Calcitonin / Q000097:blood*; D015740:Calcitonin Gene-Related Peptide; D004636:Emergency Service, Hospital; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011498:Protein Precursors / Q000378:metabolism*
chemical_list: D015415:Biomarkers; D011498:Protein Precursors; D002116:Calcitonin; D002097:C-Reactive Protein; D015740:Calcitonin Gene-Related Peptide