What are the five P’s in labor
- Pelvis
- Passenger or the fetus
- Powers of labor or uterine factors
- Psyche
- Position
It refers to the route of fetus must travel from the uterus to the cervix and vagina to the external perineum
Passageway or pelvis
Its function is to accommodate the growing fetus and support protect the reproductive organs
The pelvis
What are the bones found on the anterior and lateral portion of the pelvis
The ilium, ischium, and pubis
What are the bones found on the posterior portion of the pelvis?
Sacrum and coccyx
It is the upper half of the pelvis which supports the uterus during the late months of pregnancy and aids indirecting the fetus into the true pelvis for birth
False pelvis
It is the lower half of the pelvis and divided into three curved canal parts; 1. Inlet 2. Pelvic cavity 3. Outlet
True pelvis
It is an imaginary line which divides the pelvis into true or false pelvis
Linea terminalis or brim
A type of pelvic shape that is known as female pelvic which is an ideal for childbirth
Gynecoid pelvis
It is a male pelvis that is difficult for the fetus to exist from this type of pelvis; a heart shaped-like pelvic
Android pelvic
A type of pelvic which is an ape- like; this shape of the pelvis does not accommodate a fetal head as well as the gynecoid pelvis.
Anthropoid pelvic
The shape of this pelvic is flattened oval; and a fetal head might not be able to rotate to match the curves of the pelvic cavity
Platypelloid pelvic
What are the two important measurement to determine the adequacy of the pelvic size
- Diagonal conjugate (the anterior posterior diameter of the inlet)
- Tubero-ischial or bi-ischial diameter (the transverse diameter of the outlet)
The narrowest diameter of the inlet of the pelvic is what measurement
Diagonal conjugate
The narrowest diameter of the outlet is what measurement?
Tubero-ischial
Size of diagonal conjugate is?
10.5 to 11 cm
the distance between the midpoint of the sacral prometory and the midline of the synthesis pubis which is ascertained by subtracting 1 to 1.5 cm from the diagonal conjugate
OC=DC- 1 to 1.5
Obstetric conjugate
It is made at the medial and lowermost aspect of the ischial tuberosities at the level of the anus
11 cm in diameter
Tubero-ischial or Bi-ischial diameter of the outlet
