Epidural anesthesia allows continual highly effective relief of labor pain, using only small amounts of medication deposited directly on the spinal nerves. With proper medication combinations and dose adjustments this pain relief can be achieved, optimally without losing the ability to control movement in any part of the body.
In some instances, however, variable reduction in strength or coordination of the legs does occur as a side effect. Most importantly, epidural anesthesia provides clearly superior pain relief, while having little of the sedating side effects that limit the use of the intravenous pain medications that were discussed above.
Also, if cesarean section becomes necessary, the epidural catheter that is already in place can be used to provide anesthetic for the cesarean delivery while the patient remains awake and comfortable. Disadvantages of epidural anesthesia include its potential for contributing to uncommon minor complications such as:
• Persistent positional headache afterwards, that occasionally requires additional treatment for rapid resolution
• Incomplete epidural nerve block allowing "patches" of discomfort during labor (sometimes requiring replacement of the catheter)
• Low back discomfort at the location of the needle placement that is usually short lived and always is self limited.
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