1st Stage of Labor
The 1st Stage of Labor is typically the longest stage of labor; it is generally divided into 3 phases which are called; Early, Active and Transition.
Purpose- Dilation and effacement of the cervix occurs through a series of contractions. (see diagram below)
The amniotic sac usually breaks during this stage
- Early Phase: Contractions become consistent and arrive at regular intervals
- Active Phase: Labor becomes more intense with contractions having a frequency of 4-5 minutes and lasting up to 60 seconds. The cervix will normally dilate to 4-8 centimeters during this phase. The key to managing this phase is to stay relaxed
- Transition Phase: This phase is usually identified as the shortest but hardest parts of labor. Contractions may have a frequency of 2-3 minutes and may last up to 90 sections in duration. The cervix will be completely dilated when this phase is over.
Signs of Transition Phase
- Fluctuation in body temperature
- Feeling pressure against the rectum
- Nausea or vomiting
- Feeling an urge to push/bear down
- Leg cramps
- Sensitivity to touch
Interval: After the transition phase is over it isn’t unusual for women to experience an interval during which contractions may weaken for up to 20 minutes
