title: [Evaluation of the interest of procalcitonin in the diagnosis of chorioamnionitis in preterm premature rupture of membranes. An observational and prospective study].
abstract: BACKGROUND
  Diagnosis of chorioamnionitis (CA) is difficult because all clinical and biological signs are rarely concordant. According to recent literature, PCT could act as a specific marker of bacterial infection. Our main objective was to assess whether PCT could improve our management of patients with preterm premature rupture of membranes (pPROM), allowing earlier and more specific diagnosis for CA.
  
  
  METHODS
  Patients with pPROM from 24 and 34weeks of amenorrhea were included, from November 2013 to October 2014. PCT was collected twice a week, from pPROM until delivery. Obstetricians were blinded from PCT results, in order not to influence the management of the patients. PCT values were then compared to clinical and other biological diagnostic markers (CRP and white blood cells count [WBC]).
  
  
  RESULTS
  Thirty patients were included, with 11 cases of histological CA and 5 early-onset neonatal sepsis. With a cut-off value of 0.05ng/mL, the sensitivity of PCT to detect histological CA was 54%, the specificity was 79% and the positive and negative predictive value were respectively 60% and 75%. The positive likelihood ratio was 2.57 and the negative likelihood ratio was 0.58. Using PCT values, our medical decision of foetal extraction would have change in 5 cases (in a wrong way in 3 of them).
  
  
  CONCLUSIONS
  PCT in the diagnostic of CA is not useful in the management of patients.
authors.affiliation: Pôle de gynécologie-obstétrique de Hautepierre, 67200 Strasbourg, France. Electronic address: v_ronzino@hotmail.com.
authors.forename: V
authors.initials: V
authors.lastname: Ronzino-Dubost
authors.affiliation: Pôle de gynécologie-obstétrique de Hautepierre, 67200 Strasbourg, France. Electronic address: nicolas.sananes@gmail.com.
authors.forename: N
authors.initials: N
authors.lastname: Sananès
authors.affiliation: Laboratoire de biochimie, hôpital de Hautepierre, 67200 Strasbourg, France. Electronic address: thomas.lavaux@chru-strasbourg.fr.
authors.forename: T
authors.initials: T
authors.lastname: Lavaux
authors.affiliation: Pôle de gynécologie-obstétrique de Hautepierre, 67200 Strasbourg, France. Electronic address: cherif.youssef2@wanadoo.fr.
authors.forename: C
authors.initials: C
authors.lastname: Youssef
authors.affiliation: Pôle de gynécologie-obstétrique de Hautepierre, 67200 Strasbourg, France. Electronic address: adrien.gaudineau@chru-strasbourg.fr.
authors.forename: A
authors.initials: A
authors.lastname: Gaudineau
authors.affiliation: Pôle de gynécologie-obstétrique de Hautepierre, 67200 Strasbourg, France. Electronic address: lise.lecointre@chru-strasbourg.fr.
authors.forename: L
authors.initials: L
authors.lastname: Lecointre
authors.affiliation: Pôle de gynécologie-obstétrique de Hautepierre, 67200 Strasbourg, France. Electronic address: bruno.langer@chru-strasbourg.fr.
authors.forename: B
authors.initials: B
authors.lastname: Langer
mesh_terms: D002116:Calcitonin / Q000097:blood*; D002821:Chorioamnionitis / Q000097:blood*; D005260:Female; D005322:Premature Rupture of Fetal Membranes / Q000097:blood*; D006801:Humans; D011237:Predictive Value of Tests; D011247:Pregnancy; D011446:Prospective Studies
chemical_list: D002116:Calcitonin
keywords: Chorioamnionitis; Chorioamniotite; Diagnostic; Infection néonatale précoce; Preterm premature rupture of membranes; Procalcitonin; Procalcitonine; Rupture prématurée des membranes