What are the high risk factors for cerebral palsy?

  Birth asphyxia, jaundice, prematurity, early pregnancy medication, neonatal cramps, low birth weight, emergency delivery, maternal toxicity, vaginal bleeding, intracranial hemorrhage, prolonged labor, placenta praevia, gestational toxicity, aspiration pneumonia, twin births, giant babies, heavy gestational reaction, cord encirclement, fetal head attraction, breech position, transverse position, sclerosis.  Familial factors: congenital genetic disorders in the family or immediate family, such as familial cerebral palsy, degenerative disorders, mental disorders, mental retardation, familial congenital malformations, late pregnancy, frequent miscarriages, stillbirths, etc.  Maternal prenatal factors: births under 16 and over 40 years of age, first births over 36 years of age, habitual miscarriage, multiple births, history of delivery of immature, deformed and huge children, viral infection in early pregnancy, early vaginal bleeding, X-ray exposure, smoking habit, long-term medication, endocrine diseases such as diabetes mellitus, obesity, severe gestosis, infectious diseases in pregnancy, major surgery, anemia, etc. Maternal intrapartum factors.  Long labor (more than 24 hours for primiparous delivery, more than 12 hours for transitional delivery), more than 2 hours for the second stage of labor, early water breakage, placenta praevia, placenta abruptio, placental dysfunction, amniotic fluid abnormality, umbilical cord abnormality – prolapse, round neck, intrauterine oxygen deprivation, breech delivery, high and mid position forceps, severe asphyxia, cesarean section, etc. Neonatal factors: birth weight less than 2.5 kg and 4.1 kg or more, overdue delivery up to 34 weeks and over 43 weeks, asphyxia (Apgar score of 4 or less after 1 minute), spastic episodes, jaundice over 2 weeks, exchange transfusion, respiratory disturbances and cyanotic episodes, malformed birth injuries, hemorrhage, anemia, infection, early vomiting, hypoglycemia, acidosis, anamnesis, irritability.  According to the survey of Jiamusi Medical College, neonatal asphyxia is highly correlated with cerebral palsy and is the most important causative factor, followed by jaundice and prematurity, which are the three major causes in China. Generally, prenatal factors account for 10-20%, perinatal factors account for 50-70%, and postnatal factors account for 20-30%.