Labor
The process of birth
Presentation
part of fetus lying over cervix
- The first part delivered
Vertex Presentation
top of head is presenting
Breech Position
lower areas are presenting
Position
direction that back of baby’s head is pointing
Occipital bone
bone of the back of the skull
Occiput anterior (OA)
back of the skull toward the chest.
Occiput posterior (OP)
back of the skull toward the back.
- More painful than OA
Station
cm of the head below the pelvis.
Labor
Occurs ~38 weeks after fertilization.
Possible signs of approaching labor/prelabor
Backache
Lower abdomen cramps
- May progress to uterine contractions
Frequent, soft bowel movements
- May manifest as diarrhea
Nesting urge
A strong desire to complete preparation for the baby.
- Accompanied by a burst of energy
Labor stages
Dilation stage, Expulsion stage, Placental stage
Prelabor
Stage with nonprogressing uterine contractions
Nonprogressing contractions
Contractions that do not increase in intensity, frequency, or duration.
Signs of prelabor
Bloody show, fluid leaking from vagina
Bloody show
blood stained mucus that comes through the vagina.
Mucus plug
thick mucus blocking the cervix.
- Prevents pathogen passage through cervix
Fluid leaking from vagina
- Caused by small rupture of “bag of waters”
Dilation Stage
Stage of labor when progressing contractions begin.
- Ends when cervix is completely dilated
Events of Dilation Stage
Progressing contractions begin, Cervix dilates, cervix effaces, water breaks