CTG

Question 1

What does CTG stand for?

Answer 1

Cardiotocography

Question 2

What is the normal foetal HR?

Answer 2

100-160

Question 3

What is baseline bradycardia?

Answer 3

HR <100

Question 4

What can cause baseline bradycardia?

Answer 4

Increased foetal vagal tone

Maternal BB use

Question 5

What is baseline tachycardia?

Answer 5

HR > 160

Question 6

What can case baseline tachycardia?

Answer 6

Maternal pyrexia
Chorioamnionitis
Hypoxia
Prematurity

Question 7

What is normal variability on a CTG?

Answer 7

5-25bpm

Question 8

What can cause loss of baseline variability?

Answer 8

Foetus sleeping= most common, lasts <40 mins
Prematurity
Hypoxia
Drugs

Question 9

What are late decelerations?

Answer 9

Deceleration of HR which lags behind start of contraction and doesn’t return to normal for 20 seconds after contraction finished

Question 10

What causes late decelerations?

Answer 10

Foetal distress- e.g. asphyxia, placental insufficiency

Question 11

What are variable decelerations?

Answer 11

Decelerations independent of contractions

Question 12

What causes variable decelerations?

Answer 12

Cord compression