Presentation

Question 1

What is the presentation & diameter:

Suboccipto-bregmatic

Answer 1

Vertex
9.5cm

Question 2

What is the presentation & diameter:

Occiptofrontal

Answer 2

OP
11cm

Question 3

What is the presentation & diameter:

Verticomental

Answer 3

Brow
13.5cm

Question 4

What is the presentation & diameter:

Submento-bregmatic

Answer 4

Face
9.5cm

Question 5

Incidence face presentation

Answer 5

1/500

Question 6

RF for face presentation

Answer 6

1) Contracted maternal pelvis or cephalo-pelvic disproportion

2) Multiparity or decreased uterine tone, leading to natural extension of the fetal head

3) Nuchal cord

4) Fetal goitre or sterno-mastoid tumour - causes extension of fetal neck

5) Anencephaly (>30% of cases of face presentation)

6) Other fetal anomalies in up to 60%

Question 7

Which type of face presentation can delivery vaginally?

Answer 7

Mento-anterior position 60-80%
If need AVD, use forceps with downward tractions