Spinal anesthesia (spinal block) is similar to epidural anesthesia,
except the anesthetic is injected in a single dose into the fluid around the
spinal cord. A spinal block may also be called a saddle block since it numbs
the area that would come into contact with the saddle of a horse.
Like an epidural catheter, a spinal block must be administered by an
anesthesiologist. Spinal anesthesia causes complete loss of feeling and muscle
control below the waist and is usually used only for an assisted delivery (such
as a
cesarean section or a delivery with
forceps) since most women cannot push effectively
after a spinal block.
The benefit of a spinal block is that it works quickly. However, the
side effects may include lowering of the mother's blood pressure during
delivery, occasional headache after delivery, and temporary urinary difficulty.
Infection at the injection site is a rare complication.