CTG

Question 1

What is CTG?

Answer 1

Cardiotocography

Continuous fetal monitoring

Question 2

How is CTG recorded?

Answer 2

One transducer above fetal HR

One transducer near fundus to measure contractions

Question 3

What are indications for CTG?

Answer 3

High risk pregnancy
Sepsis
Pre-eclampsia
Failure to progress
Oxytocin use

Question 4

What does the CTG record?

Answer 4

Contractions
Baseline FHR
Variability of FHR
Accelerations
Decelerations

Question 5

How are contractions measured?

Answer 5

Number in 10 mins

Question 6

What else should you may attention to during contractions?

Answer 6

Fetal HR

Question 7

What is a reassuring baseline FHR?

Answer 7

110-160

Question 8

What is a non-reassuring baseline FHR?

Answer 8

100-109 OR 161-180

Question 9

What is an abnormal baseline FHR?

Answer 9

<100 OR >180

Question 10

What is a reassuring FHR variability?

Answer 10

5-25

Question 11

What is a non-reassuring FHR variability?

Answer 11

<5 for 30-50mins OR >25 for 15-25mins

Question 12

What is an abnormal FHR variability?

Answer 12

<5 for >50mins OR >25 for >25 mins

Question 13

What is an acceleration?

Answer 13

Periods when FHR peaks

Question 14

When is it normal for an acceleration?

Answer 14

During contraction

Question 15

What is a deceleration?

Answer 15

Period when FHR drops

Question 16

What is an early deceleration?

Answer 16

Gradual dips + recovery in response to contraction

Question 17

What is a late deceleration?

Answer 17

Dips that start after contraction starts

Question 18

What is a variable deceleration?

Answer 18

Deceleration unrelated to contractions

Question 19

What is a prolonged deceleration?

Answer 19

Lasts 2-10 mins

Question 20

How can CTGs be described?

Answer 20

Normal

Suspicious = single non-reassuring factor

Pathological = >/=2 non-reassuring factor OR 1 abnormal

Need for urgent intervention = acute bradycardia or prolonged deceleration