OGCO-C2.1 Antepartum monitoring

Question 1

What are the features included in classifying CTG as normal, suspicious or pathological?

Answer 1

Question 2

Define early deceleration, late deceleration and variable deceleration

Answer 2

• Early decelerations: repetitive and periodic slowing of the fetal heart rate with onset early in the
  contraction and return to baseline at the end of the contractions
• Late decelerations: repetitive and periodic slowing of the fetal heart rate with onset at mid to end of the contraction and the lowest point more than 20 seconds after the peak of contraction and ending after the contraction
• Variable decelerations: intermittent and periodic slowing of the fetal heart rate with a variable time in relation to the contraction

Question 3

Based on classification of CTG findings what is the following steps of Mx?

Answer 3

Question 4

How to recognize signal ambiguity?

Answer 4

1. FHR is running in the low normal range;
2. FHR accelerations (sometimes slight with absence of decelerations) are noted with >50% of contraction (especially when mother is pushing);
3. Apparent FHR deceleration to maternal HR (or maternal tachycardia into FHR) range that does not recover. There may be a signal break between the switch from fetal to maternal heart rate, as visualized by a distinct discontinuity in the heart tracing.
4. Difference between maternal pulse and fetal pulse is less than 15 bpm

Question 5

What are the suggestions for routine practise of monitoring fetal condition?

Answer 5