OB-Monitoring
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þ Internal Fetal Monitoring
 - much better than external
 - membranes must have ruptured or delivery imminent

þ External Fetal Monitoring
 - requires experienced OB nurse
 - easier when patient still and supine, but this is not good if patient
   hypovolemic

þ When to monitor fetus?
 - not before 20 weeks; not viable
 - if over 20 weeks and any significant traumatic event
 - monitor for at least 4 hours; extend to 24 hours if maternal injury is
   serious, fetal heart tracing is worrisome, uterine contractions more
   frequently than 15 minutes, rupture of membranes, or bleeding.
 - follow up on fetal monitoring after trauma:  ultrasound every 3 weeks to
   check on fetal growth.