US ST Case 9 – Variable decelerations

Summary

30 year old G 1 P 0, Gest. week 40+4. Unremarkable pregnancy. SROM occurred 48 hours earlier, admitted with contractions. IV antibiotic given.

• 12:00 Epidural placed. SVE: Cx 5 cm dilated, 100% effaced, vx -1.  Clear amniotic fluid noted.
• 12:34 ST Analysis initiated.  Oxytocin infusion started.
• 16:45 SVE: Cx 7 cm dilated, 100 % effaced, vx at 0 station.
• 17:30 Oxytocin infusion decreased due to tachysystole. .
• 19:00 SVE:Cx 10 cm dilated, 100% effaced, vx +1. Waiting for the head to descend.
• 20:00 Active pushing started.
• 20:22 SVD Baby girl. Birth weight 3 440 g. Apgar Score 8/9/10.

Cord gases

A nuchal cord times 2 noted.

Comment

In this case, ST Analysis was able to provide additional information that supported the decision to not intervene.