How is the first stage of labor subdivided?

The first stage of labor is indeed subdivided into latent, active, and transition phases. This classification helps healthcare providers better understand the progression of labor and manage the care of the laboring person effectively.

During the latent phase, contractions begin to occur and the cervix begins to efface (thin out) and dilate (open) up to around 3-4 centimeters. This phase can be lengthy, often taking several hours or even days, and is characterized by irregular contractions that gradually become more frequent and intense.

Following this, the active phase takes place when the cervix dilates from about 4 centimeters to around 7 centimeters. During this phase, contractions become more regular, stronger, and often occur every 3 to 5 minutes. This stage typically signifies a more progressive labor process.

Finally, the transition phase is the last part of the first stage of labor, where dilation reaches from 8 to 10 centimeters. This phase is known for being the shortest but most intense, with very strong contractions often occurring every 2 to 3 minutes. The transition phase is critical as it prepares the laboring person for the second stage of labor, which involves the pushing and delivery of the baby.

Understanding these phases is essential, as