What is the duration of the prolonged latent phase for nulliparous women according to the Friedman definition?

The duration of the prolonged latent phase for nulliparous women, as defined by Friedman, is indeed more than 20 hours. The latent phase is the initial stage of labor where cervical dilation occurs gradually, and it can vary greatly among women. Friedman’s work established a framework for understanding labor progression, particularly in nulliparous women who are experiencing their first labor.

According to his criteria, if the latent phase exceeds 20 hours in nulliparous patients, it is classified as prolonged. This distinction is clinically significant because it can influence management decisions, including the need for labor augmentation or further evaluation to ensure the well-being of both the mother and the fetus. Recognizing a prolonged latent phase is essential for preventing unnecessary interventions and for providing appropriate support to the laboring woman.

Therefore, the correct understanding of the prolonged latent phase is essential for managing labor effectively, and the definition serves as a guideline for obstetric practices.