Is computed tomography a reliable diagnostic modality in detecting placental injuries in the setting of acute trauma?

The objective of this study was to determine whether computed tomography (CT) is a reliable method of imaging to assess placental injury after acute trauma during pregnancy.

This study was a retrospective review of digital CT images and electronically scanned charts of pregnant trauma patients identified from the hospital trauma registry list.

Using delivery within 36 hours of trauma as the clinical marker for the occurrence of placental abruption, positive radiologic readings showed 86% sensitivity and 98% specificity. The overall accuracy was 96%.

Given that defined patterns on CT can be identified and those can be correlated to actual abruption, CT may be a reliable method for evaluation of placental abruption after maternal trauma, especially in the face of abdominal trauma. Our results show that CT has both good sensitivity and specificity identifying abruption and should be considered for use in the management in the pregnant patient after trauma.