There is no moderate variability and/or no accelerations
There are significant decelerations with >=50% of contractions for >=30 minutes
This may be a category 3 fetal heart rate tracing:
Cesarean or Operative Vaginal Delivery Without Further Delay. You may not even want to wait more than 10-15 minutes with the decision of delivery when there is a category 3 fetal heart rate tracing.