Abdominal trauma in the pregnant patient.

Physicians who care for pregnant women must be prepared to evaluate and treat abdominal trauma during pregnancy. The evaluation and management of even minimal abdominal trauma in pregnancy is often problematic, and the use of laboratory tests, fetal monitoring, radiography and ultrasonography depends on the extent of the trauma and the viability of the fetus. Intervention ranges from reassurance to cardiopulmonary resuscitation and surgery. Common laboratory studies include a complete blood count, coagulation panel, urinalysis and blood type and screen. Ultrasonography is useful for evaluation of fetal weight and status of amniotic fluid, but tocodynamometry is more sensitive for diagnosis of placental abruption. Patients with minimal trauma and no bleeding, uterine contractions or abdominal pain can be safely discharged after four to six hours of monitoring, but patients with any of these findings should be admitted to the hospital for overnight observation with continuous fetal heart rate monitoring.