Match each distinctive clinical presentation or intrapartum event to the most appropriate obstetric complication.
- Sudden cessation of active labor contractions, acute tearing abdominal pain, and palpation of fetal parts outside the uterine contour.Uterine rupture
- Painless vaginal bleeding immediately following artificial rupture of membranes, accompanied by a rapid, sustained drop in fetal heart rate.Vasa previa
- Sudden onset of severe, continuous abdominal pain, a board-like and tender uterus, and high-frequency, low-amplitude uterine contractions.Placental abruption
- An episode of bright red, painless vaginal bleeding in the third trimester with a soft, non-tender uterus and a reactive fetal heart tracing.Placenta previa
Answer
The presentations map to their respective etiologies based on the presence or absence of pain, uterine tone, and fetal heart rate changes: loss of contractions with palpable fetal parts indicates uterine rupture; painless bleeding post-amniotomy with fetal bradycardia indicates vasa previa; painful bleeding with a rigid uterus indicates placental abruption; and painless bleeding with a soft uterus indicates placenta previa.
Each clinical presentation contains classic pathognomonic features that reliably differentiate the four most critical etiologies of late pregnancy and intrapartum hemorrhage.
Step-by-Step Solution
Key Concept
Differentiating third-trimester bleeding and intrapartum emergencies requires analyzing maternal pain, uterine tone, contraction patterns, and the timing of fetal distress.
Estimated Time:1m 30s