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.
Since epidurals often reduced contractions or stopped labour â which occurred around 40% of the time in those days â having a drug that could be used to start contractions again was important. However, up until around 20 years ago most epidurals were given near the tailbone area and were actually called 'Caudal Blocks'.