In stage one of labor, how dilated is a mother during the active phase?

• A. 0-3 cm
• B. 4-7 cm
• C. 8-10 cm
• D. 10 cm and 100% effaced

Answer: (B)

During the active phase of stage one of labor, a mother is typically dilated between 4 to 7 centimeters. This phase follows the latent phase, where the cervix dilates from 0 to 3 centimeters and contractions begin to become more frequent and intense. During the active phase, women experience stronger contractions, and the body progresses toward full dilation, which is crucial for the descent of the baby through the birth canal.

The progression of labor is characterized by these specific measurements of dilation, which reflect the body’s preparation for delivery. Once the cervix reaches 8 centimeters, the transition phase begins, leading up to full dilation at 10 centimeters. Therefore, identifying the active phase as the 4 to 7 centimeters dilation range is essential for understanding the labor process and ensures appropriate clinical support and intervention as needed.