Optimal Dilation for Epidural Administration

A 28-year-old female is admitted to the labor and delivery unit at 38 weeks of gestation. She is being monitored for signs of labor progression. The nurse notes that the fetal heart rate is currently 150 beats per minute with moderate variability. Upon cervical examination, the cervix is dilated to 6 cm and 80% effaced.

The patient expresses concern about pain during labor. The nurse educates her on various pain management options available. At this time, the healthcare provider orders an epidural block. Considering the potential risks and benefits, the nurse must effectively communicate important aspects of this intervention.

Fill in the blank: An epidural block is generally administered when the patient is dilated to at least _____ cm to ensure optimal effectiveness and minimize complications.