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ChorioamnionitisAka: Intra-Amniotic Infection

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  1. See Also
    1. Group B Streptococcus Prophylaxis
  2. Risk Factors
    1. Prolonged Rupture of Membranes
    2. Multiple intrapartum vaginal exams
    3. Internal monitoring
    4. Chorioamnionitis in prior pregnancy (2 fold risk)
      1. Laibl (2006) Obstet Gynecol 108:1493
  3. Signs
    1. Maternal Fever with temperature > 100.7 F
    2. No obvious source other than uterus
    3. Associated findings suggestive of Chorioamnionitis
      1. Fetal Tachycardia
      2. Maternal tachycardia
      3. Abdominal tenderness
      4. Foul smelling amniotic fluid
  4. Labs
    1. Complete Blood Count
      1. Leukocytosis
    2. Amniotic fluid culture
  5. Differential Diagnosis
    1. Pyelonephritis
    2. Pneumonia
    3. Appendicitis
  6. Management
    1. Chorioamnionitis is not an indication for cesarean
    2. See Chorioamnionitis Antibiotic Management
  7. Course
    1. Fetal outcome improves with
      1. Antibiotics
      2. Defervescence
  8. Complications
    1. Neonatal Sepsis
    2. Maternal Sepsis
    3. Postpartum Hemorrhage
    4. Labor Dystocia

Infection of amniotic sac and membranes (C0008495)

Definition (MSH)INFLAMMATION of the placental membranes (CHORION; AMNION) and connected tissues such as fetal BLOOD VESSELS and UMBILICAL CORD. It is often associated with intrauterine ascending infections during PREGNANCY.
ConceptsDisease or Syndrome (T047)
ICD9658.4, 762.7
MSHD002821
EnglishAmnionitis, Chorioamnionitides, Chorioamnionitis, Infection of amniotic sac and membranes, Membranitis
Spanishcorioamnionitis, membranitis
Parent ConceptsFetal Diseases (C0015929), Fetal Membranes, Premature Rupture (C0015944), Placenta Diseases (C0032045), Infectious Disorder by Site (C1334175), Placental Non-Neoplastic Disorder (C1335423), Infection of amniotic cavity (C0002631), Ambiguous concept (C1274012)
SourcesDXP, MSH, MTH, MTHICD9, NCI, NDFRT, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



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