Obstetrics

Question 1

3 P’s of childbirth

Answer 1

Power

Passenger

Pathway

Question 2

Planes of the pelvis

Answer 2

Inlet

Greatest

Least

Outlet

• from superior to inferior*

Question 3

Conjugated of the pelvis

Answer 3

True conjugate 
- top of pubes to the sacrum 
obstetrical conjugate
- middle of pubes to sacrum 
Diagonal conjugate 
- back of pubes to sacrum 

10 cm or greater is good

Question 4

DESPP

Answer 4

Dilation (-3: +3)
-0 = ischial spine level; (+) = levels of cervix dilation

Station
Evasment
Presentation
Position

Known this for pregnancies

Question 5

Pelvic types

Answer 5

Gynecoid: normal

Android: heart shaped wider than long

Anthropoid: heart shaped longer than wide

Platypeolloid: really wide oval

Most common position is LOA