Average Duration of Second Stage of Labor for Nulliparous Women

During labor, a nurse is monitoring a patient who is in the second stage of labor. This stage involves the descent of the fetus through the birth canal and ends with the delivery of the baby. It is crucial for the nurse to be aware of the normal progression of this stage to provide appropriate care. The average duration of the second stage of labor for a nulliparous woman is approximately _____ hours.