二·感染途经：2.Infectiongateway产前感染：(1)antepartuminfection血行（李司特菌，胎儿弯曲菌）→孕母感染from blood circulationeg. Listerella,医源性（羊水穿刺，宫Campylobacter fetus内输血)pregnancy maternalinfectioniatrogeniceg, puncture on amnioticfluid cavityintrauterine transfusion
二．感染途经： 1. 产前感染： ① 血行（李司特菌，胎儿 弯曲菌） → 孕母感染 ② 医源性（羊水穿刺，宫 内输血） 2 . I nf e ct ion ga t eway (1) antepartum infection - - fr om blood cir cula t ion, eg. Listerella, Campylobacter fetus - pregnancy maternal infection - - iatrogenic eg, punct ur e on amniot ic fluid cavity intrauterine transfusion
.Infection1gateway感染途经：(2)intrapartuminfection产时感染：Ascending infection①逆行*premature ruptureofmembrane-胎膜早破（PROM）6-12h有感(PROM)for6-12hcouldhave染机会，24h感染率50%，通常opportunity,50%incidencefor24h.Usually >18h as risk>18h定为危险因素factorsprolonged labor-产程延长inhalation, ingestion②吸人、吞人iatrogenic③医源性（头皮取血放电极takeblood sample from scalp产钳等）put electrodesputobstetricforceps
二．感染途经： 2. 产时感染： ① 逆行 - 胎膜早破 (PROM) 6-12h有感 染机会, 24h感染率50%, 通常 >18h定为危险因素 - 产程延长 ② 吸入、吞入 ③ 医源性（头皮取血、放电极、 产钳等） 2 . I nf e ct ion ga t eway (2) intrapartum infection - - Ascending infection *premature rupture of m e m b r an e (PROM) for 6-12h could have opportunity ,50% incidence for 24h. Usually >18h as risk factors * prolonged labor - - inhalation, ingestion - - iatrogenic * take blood sample from scalp * put electrodes * putobstetric forceps
Descending infectionAscendinginfection
Descending infection Ascending infection