title: [Risk factors of birth obstetric trauma].
abstract: BACKGROUND
  The proper prenatal care for pregnant women is crucial to quickly identify risk factors for birth trauma.
  
  
  OBJECTIVE
  To identify risk factors for neonatal birth trauma.
  
  
  METHODS
  Case-control study that included a patient in the case group for every two controls. The following risk factors were identified: cephalopelvic disproportion, macrosomia, use of forceps, precipitated or prolonged labor, malpresentation, and the most common types of birth trauma. We used descriptive statistics and odds ratios.
  
  
  RESULTS
  Statistically significant risk factors for birth trauma were: maternal age < or = 20 years (OR = 16) and > or = 30 years (OR = 2.5), first pregnancy (OR = 4.0), cephalopelvic disproportion (OR = 8.3), forceps delivery (OR = 9.4), birth weight greater than 3,800 g (OR = 6.6), and non-cephalic presentation (OR = 8.3). Found birth trauma types were: ecchymosis (40.4%), caput succedaneum (25%), erosion (15.4%), clavicle fracture (5.9%), brachial plexus paralysis (4.7%), inter alia. The perinatal outcome of 79 infants with birth trauma were compared to 158 healthy newborns.
  
  
  CONCLUSIONS
  Risk factors associated with birth injuries were: Maternal (age, pregnancy), newborn (weight), and birth care (presentation, instrumentation and pelvic sufficiency).
authors.affiliation: Unidad Médica de Alta Especialidad 23, Hospital de Ginecologia y Obstetricia, Instituto Mexicano del Seguro Social, Monterrey, NL.
authors.forename: Alejandrina
authors.initials: A
authors.lastname: Murguía-González
authors.forename: Ricardo Jorge
authors.initials: RJ
authors.lastname: Hernández-Herrera
authors.forename: Manuel
authors.initials: M
authors.lastname: Nava-Bermea
mesh_terms: D001720:Birth Injuries / Q000453:epidemiology*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D018570:Risk Assessment; D012307:Risk Factors