Labour

Question 1

What is the most important diameter during labour.

Answer 1

The interischial diameter (IID) aka Bispinous diameter.
It is normally = 10 cm

In a contracted pelvis it is <8cm.

It is the transverse diameter of plane of least pelvic dimension.

Question 2

Ways of Prevention of PTL

Answer 2

1) Cervical Cerclage
2) Progesterone therapy
3) Cessastion of smoking
4) Low dose aspirin (+/-)