Imaging Studies
Generally, if sufficient time for imaging studies exists, time to transport the patient to the obstetrics ward exists.
Ultrasonography may be useful and is immediately available at most facilities as FAST tools become increasingly available. Depending on the sophistication of the equipment and personnel available, sonography may be used to determine the following:
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Fetal position
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Number of fetuses and/or age of the fetus
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Presence of cardiac activity
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Fetal malformation (eg, CNS, developmental)
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Quantity of amniotic fluid
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Estimation of fetal weight
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Hydatiform mole
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Rh isoimmunization
Radiography has a role in the emergency assessment of the pregnant patient. It is available quickly at most facilities, and emergency physicians are skilled at independent interpretation of radiographs.If areas other than the pelvis require radiographic evaluation, shield the abdomen; perform abdominal radiography only when it is absolutely necessary. Plain radiographs of the abdomen may be used for pelvimetry to show the position and number of fetuses.
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Uterine fundal size and relative position on abdomen throughout gestation.
