In this case review, Ahmed Zaima introduces us to the frugal trees and the changes that you need to act on. We see a normal primip at term with spontaneous onset of labor with both spontaneous rupture of membranes and contractions. Due to poor signal quality and a CTG trace that cannot be assessed, a fetal spiral electrode (FSE) is applied. But when can we trust ST Analysis? Are there situations where ST Analysis is not helpful?

Background:

• 25 years old
• Primigravida
• Booked at 9+1 weeks
• Uneventful ANC
• Normally grown baby according to last USS @ 36+5
• Had outpatient IOL for postdates at 41+5 using dinoprostone pessary inserted at 09.30