This study is intended to determine whether ultrasound imaging can improve the ability to place a spinal or epidural needle in obstetric anesthesia. By evaluating the use of ultrasound for the placement of epidural catheters the investigators hope to answer two questions: 1\. How does the traditional technique based on palpation compare to one using ultrasound to place an epidural catheter? 2. Does ultrasound reduce one potential risk in epidural placement?
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Placement Below L3 Vertebra
Timeframe: immediately post epidural catheter placement