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External Cephalic Version Prediction Score

Purpose: To use the score of Wong et al to predict if external cephalic version will be successful in a woman with breech presentation at term.

Description

Wong et al developed a simple scoring system to predict whether external cephalic version would be successful in a woman with breech presentation at term. The score can be calculated in clinical settings without an ultrasound machine. The authors are from the Tsan Yuk Hospital in Hong Kong, China.


Parameters:

(1) head palpable or not

(2) breech engagement

(3) symphysis-fundal height

(4) uterine relaxation

 

Parameter

Finding

Points

head

nonpalpable

0

 

palpable

1

breech engagement

yes

0

 

no

1

symphysis-fundal height

<= 36 cm

0

 

> 36 cm

1

uterine relaxation

no

0

 

yes

1

 

score =

= SUM(points for the 4 parameters)

 

Interpretation:

• minimum score: 0

• maximum score: 4

• The higher the score, the more likely external cephalic version will be successful.

 

Score

Likelihood Ratio for Successful Version

0

0

1

0

2

1.8

3

30

4

57.7

 


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Specialty

Objective

ICD-10