title: General evaluation of periventricular-intraventricular hemorrhage in premature infants in mainland China.
abstract: OBJECTIVE
  To explore the incidence and analyze the high risk factors of PIVH in premature infants in mainland China.
  
  
  METHODS
  A total of 1122 premature infants at <37 weeks gestation were enrolled in this study. All the infants received intracranial ultrasound examinations within 1 week after birth, and the perinatal data were recorded to analyze the high risk factors for PIVH.
  
  
  RESULTS
  The results showed that the incidence rate of PIVH was 55.2% in mainland Chinese population. Among these cases, mild degrees of PIVH accounted for 82.2% and severe degrees of PIVH accounted for only 17.8%. The most important risk factors related to PIVH were low gestational age, low birth weight, low Apgar score and ventilatory treatment, etc.
  
  
  CONCLUSIONS
  It suggested that there were many high risk factors related to PIVH in premature infants and a screening cutoff point of 2000 g appeared to be more adequate for China.
authors.affiliation: Department of Neonatology & Nicu, Bayi Children's Hospital Affiliated With Beijing Military Region General Hospital, Beijing, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Pediatrics, Tongji Hospital Affilitiated To Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
authors.forename: Li-Wen
authors.initials: LW
authors.lastname: Chang
authors.affiliation: Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Qinhuangdao Maternity and Infants' Hospital, Qinhuangdao, Hebei Province, China.
authors.forename: Gui-Lian
authors.initials: GL
authors.lastname: Qin
keywords: Chinese population; Periventricular-intraventricular hemorrhage; premature infant; risk factors