By Richard Nordquist. Like adjectives and adverbs, prepositional phrases add meaning to the nouns and verbs in our sentences. There are two prepositional phrases in the following sentence: The first prepositional phrase-- in the kitchen -- modifies the noun air; the second-- of stale food --modifies the verb reeked.
Reality: An epidural involves injecting pain-blocking medication into a space between the vertebrae and the spinal fluid; it usually takes about 15 minutes to work and lasts as long as needed. A spinal is an injection directly into the spinal fluid; it is given as part of the CSE technique and takes effect in five minutes.
Epidural Blood Patch. An epidural blood patch is performed to relieve a headache caused by a dural puncture that has not responded with bedrest, increased fluid intake and analgesics. Complications are rare, but can include dural puncture with headache, temporary back pain or no relief of headache. You will require a ride home.