Which statement accurately contrasts spinal and epidural anesthesia?

Which statement accurately contrasts spinal and epidural anesthesia?

• A. Spinal is a catheter-based technique with slow onset; Epidural is a single-shot with rapid onset.
• B. Spinal is a single-shot neuraxial block with rapid onset and no catheter; Epidural uses a catheter with incremental dosing and slower onset.
• C. Spinal anesthesia uses the thoracic region exclusively; Epidural uses lumbar only.
• D. Spinal requires general anesthesia typically; Epidural never does.

Answer: (B)