USMLE Step 2 CK Lecture Notes 2019: Obstetrics/Gynecology (Kaplan Test Prep)

Figure I-6-3. Placenta  Accreta

Vasa Previa

A   21-year-old primigravida    at  38  weeks’  gestation   is  admitted    to  the

birthing    unit    at  6-cm    dilation    with    contractions    occurring   every   3   min.

Amniotomy   (artificial rupture of  membranes)  is  performed,  resulting   in

sudden  onset   of  bright  red vaginal bleeding.   The electronic  fetal   monitor

tracing,    which   had showed  a   baseline    fetal   heart   rate    (FHR)   of  135

beats/min   with    accelerations,  now shows   a   bradycardia at  70  beats/min.  The

mother’s    vital   signs   are stable  with    normal  blood   pressure    and pulse.

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