Labor and Deliver: The Daily PANCE Blueprint
Which of the following most accurately defines the second stage of labor?
A. From the onset of regular uterine contractions until complete cervical dilation
B. From complete cervical dilation until delivery of the fetus
C. From the onset of maternal pushing efforts until delivery of the fetus
D. From fetal head engagement until delivery of the fetus
E. From complete cervical effacement until delivery of the fetus
Answer and topic summary
The answer is B. From complete cervical dilation until delivery of the fetus
The second stage of labor is defined as the period from complete cervical dilation (10 cm) until delivery of the fetus. This stage is characterized by descent of the fetal presenting part through the maternal pelvis and ultimately through the vaginal canal. The second stage is typically divided into a passive phase (before active maternal pushing) and an active phase (during maternal pushing efforts). Normal duration of the second stage varies depending on parity and anesthesia use: for nulliparous women, up to 3 hours with regional anesthesia or 2 hours without; for multiparous women, up to 2 hours with regional anesthesia or 1 hour without. Prolonged second stage beyond these timeframes is associated with increased risk of maternal complications (such as postpartum hemorrhage, perineal trauma) and fetal complications (such as acidemia and low Apgar scores). Management during this stage includes monitoring maternal vital signs, fetal heart rate patterns, and encouraging effective pushing techniques while providing appropriate support and guidance.
Stages of labor:
- First Stage: From onset of regular contractions until complete cervical dilation (10 cm)
- Early/Latent Phase: 0-3 cm dilation
- Active Phase: 4-7 cm dilation
- Transition Phase: 8-10 cm dilation
- Second Stage: From complete cervical dilation until delivery of the fetus
- Passive descent phase (before active pushing)
- Active pushing phase
- Third Stage: From delivery of the fetus until delivery of the placenta
- Fourth Stage: First 1-2 hours after delivery of the placenta (immediate postpartum period)
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