* Epidurals may cause your blood pressure to suddenly drop. For this reason your blood pressure will be routinely checked to help ensure an adequate blood flow to your baby. If there is a sudden drop in blood pressure, you may need to be treated with IV fluids, medications, and oxygen.
* Other studies suggest that a baby might experience respiratory depression, fetal malpositioning, and an increase in fetal heart rate variability, thus increasing the need for forceps, vacuum, cesarean deliveries and episiotomies.
Try doing a hit of fentanyl via IV and see what your blood pressure is.
I hate the way the medical community makes words like 'may', 'could' so intentionally vague. Could mean 90% chance, could mean 1%, depending on the context. It's like speaking a doublespeak.