Which of the following is not associated with chorioamnionitis:
**Core Concept**
Chorioamnionitis is an inflammatory condition of the fetal membranes, typically caused by bacterial infection. It is characterized by the presence of an inflammatory response in the amniotic fluid and fetal membranes, often leading to preterm labor and neonatal sepsis.
**Why the Correct Answer is Right**
Chorioamnionitis is associated with various clinical manifestations, including maternal fever, uterine tenderness, and fetal tachycardia. The condition arises when bacteria, such as Group B Streptococcus or Escherichia coli, ascend from the lower genital tract to the amniotic cavity, triggering an inflammatory response. This process involves the activation of immune cells, the release of pro-inflammatory cytokines, and the infiltration of neutrophils into the fetal membranes.
**Why Each Wrong Option is Incorrect**
**Option A:** Fetal distress is a common complication of chorioamnionitis, often resulting from the inflammatory response and subsequent fetal hypoxia. Therefore, it is associated with chorioamnionitis.
**Option B:** Fetal tachycardia is a hallmark of chorioamnionitis, typically exceeding 160 beats per minute. This is due to the stress response and inflammatory cytokines released in response to the bacterial infection. So, it is associated with chorioamnionitis.
**Option C:** Maternal fever is a common symptom of chorioamnionitis, often exceeding 38°C. This is due to the systemic inflammatory response syndrome (SIRS) triggered by the bacterial infection. Thus, it is associated with chorioamnionitis.
**Clinical Pearl / High-Yield Fact**
In cases of suspected chorioamnionitis, prompt delivery is often necessary to prevent further complications, such as fetal sepsis and neonatal morbidity. Amniocentesis may be performed to confirm the diagnosis, and antibiotics should be administered promptly to treat the underlying bacterial infection.
**Correct Answer:** D