At what dilation stage does the active phase range between?

• A. 2-4 cm
• B. 4-7 cm
• C. 8-10 cm
• D. 0-2 cm

Answer: (B)

The active phase of labor is characterized by more intense contractions and a more rapid rate of cervical dilation compared to the earlier part of the first stage of labor, known as the latent phase. During the active phase, cervical dilation typically ranges from 4 to 7 cm. This period is crucial because it signifies that labor is progressing, and the mother is usually in more significant discomfort.

Understanding this phase is important for healthcare providers, as it helps them determine appropriate interventions and provide support to the laboring woman. In contrast, the other ranges mentioned do not correspond to the active phase: the 0-2 cm range pertains to the latent phase, the 2-4 cm range represents the very beginning of the active phase, and the 8-10 cm range signifies the transition phase, which is generally considered the final part of dilation before pushing begins.