During labor, the active phase of stage 1 is characterized by contractions that are well established and cervix dilation of at least how many centimeters?

During labor, the active phase of stage 1 is characterized by contractions that are well established and cervix dilation of at least how many centimeters?

• A. 2 cm
• B. 8 cm
• C. 4 cm
• D. 6 cm

Answer: (C)

Active labor begins when contractions become regular, stronger, and the cervix begins to open more rapidly, marking a transition from the early latent phase to a phase where dilation progresses more quickly. This shift signals that labor is genuinely underway and that the body is moving toward full dilation. The other points describe earlier, less predictable contractions with minimal cervical opening or later stages when dilation is well advanced or approaching transition, which are not the defined start of the active phase.

Active labor begins when contractions become regular, stronger, and the cervix begins to open more rapidly, marking a transition from the early latent phase to a phase where dilation progresses more quickly. This shift signals that labor is genuinely underway and that the body is moving toward full dilation. The other points describe earlier, less predictable contractions with minimal cervical opening or later stages when dilation is well advanced or approaching transition, which are not the defined start of the active phase.