title: Assesment of perinatal mortality in two different periods: results of a single center.
abstract: This study aimed to investigate the perinatal mortality rate with 37 864 deliveries which occured in two different periods in a single center, to compare the components of perinatal mortality and affecting factors with the results of the study related with perinatal mortality which we conducted in 1999 and to emphasize the precautions directed to reduce mortality rates.
  
  
  
  All live births and stillbirths which occurred in Bakırköy Obstetrics and Pediatrics Training and Research Hospital between January 2007 and December 2007 were evaluated. The results were compared with the results of the study conducted in 1999. Newborns with a weight above five hundred grams and a gestational age above 22 weeks were enrolled in the study. The stillbirth rate, early neonatal mortality rate, late neonatal mortality rate, perinatal mortality rate and corrected perinatal mortality rate were calculated. Modified Wigglesworth Classification was used for evaluating the perinatal mortality and the subjects were examined in 7 groups. The characteristics belonging to the years of 2007 and 1999 were examined, the differences were recorded and the results were discussed. When the two periods were compared, it was observed that the perinatal mortality rate increased from 23.5‰ to 26‰.
  
  
  
  When the causes were investigated, it was observed that the stillbirth rate was increased in 2007 (84%) and especially congenital anomalies had an important role in this increment. The early neonatal mortality rate declined from 0.8% in 1999 to 0.4% in 2007. It was found that especially the premature mortality rate (Group 3) and the mortality rate related with perinatal asphyxia (Group 4) were significantly decreased.
  
  
  
  The decrease in early neonatal mortality rate could be best explained by productive operation of the new neonatal intensive care unit which had been established after 2002.
authors.affiliation: Clinic of Pediatrics, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
authors.forename: Serdar Sadık
authors.initials: SS
authors.lastname: Duran
authors.affiliation: Clinic of Pediatrics, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
authors.forename: Sultan
authors.initials: S
authors.lastname: Kavuncuoğlu
authors.affiliation: Clinic of Pediatrics, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
authors.forename: Ferhat
authors.initials: F
authors.lastname: Sarı
authors.affiliation: Clinic of Pediatrics, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
authors.forename: Esin Yıldız
authors.initials: EY
authors.lastname: Aldemir
authors.affiliation: Clinic of Pediatrics, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
authors.forename: Nazlı
authors.initials: N
authors.lastname: Kavçık
authors.affiliation: Clinic of Pediatrics, Kanuni Sultan Süleyman Training and Research Hospital, İstanbul, Turkey.
authors.forename: Ferhat
authors.initials: F
authors.lastname: Demir
keywords: Early neonatal mortality; late neonatal mortality; modified wigglesworth classification; perinatal mortality; stillbirth