Fetal distress LIN QI DE 20059.5
Fetal distress LIN QI DE 2005.9.5
Definition Fetal distress is defined as depletion of oxygen and accumulation of carbon dioxide, leading to a state of "hypoxia and acidosis" during intra uterine life
Fetal distress is defined as depletion of oxygen and accumulation of carbon dioxide,leading to a state of “hypoxia and acidosis ” during intrauterine life. Definition
Etiology Maternal factors 1)Microvascular ischaemia(PIH 2)Low oxygen carried by rBc(severe anemia) 3) Acute bleeding(placenta previa, placental abruption 4)Shock and acute infection 5)obstructed of Utero-placental blood flow
Maternal factors 1) Microvascular ischaemia(PIH) 2) Low oxygen carried by RBC(severe anemia) 3) Acute bleeding(placenta previa, placental abruption) 4) Shock and acute infection 5) obstructed of Utero-placental blood flow Etiology
Etiology Placenta umbilical factors 1)Obstructed of umbilical blood flow 2)Dysfunction of placenta 3)Fetal factors 4) Malformations of cardiovascular system 5)Intrauterine infection
Placenta、umbilical factors 1) Obstructed of umbilical blood flow 2) Dysfunction of placenta 3) Fetal factors 4) Malformations of cardiovascular system 5) Intrauterine infection Etiology
Pathogenesis Hypoxia accumulation of carbon dioxide Respiratory Acidosis Acute fetal FHR→FHR↓→FHR↑ distress Intestinal peristalsis Relaxation of the anal sphincter Meconium aspiration Fetal or neonatal pneumonia
Hypoxia、accumulation of carbon dioxide ￬ Respiratory Acidosis ￬ FHR￪ → FHR ￬→ FHR ￪ ￬ Intestinal peristalsis ￬ Relaxation of the anal sphincter ￬ Meconium aspiration ￬ Fetal or neonatal pneumonia Pathogenesis Acute fetal distress