Once the fentanyl patch is removed, the patient may be transitioned to morphine by administering half of the morphine-equivalent dose in immediate release (IR) formulation every 4 hours for 2 to 4 days, until the lowest possible pain level is maintained.
Protostomia (from Greek meaning mouth first) are a clade of animals. Together with the deuterostomes and other phyla, they make up the Bilateria, mostly comprising animals with bilateral symmetry and three germ layers. The major distinctions between deuterostomes and protostomes are found in embryonic development.In animals at least as complex as earthworms, the embryo forms a dent on one side, the blastopore, which deepens to become the archenteron, the first phase in the growth of the gut. Most protostomes are schizocoelomates, meaning a solid mass of the embryonic mesoderm splits to form a coelom. 2  A few, such as Priapulids, have no coelom, but they may have descended from schizocoelomate ancestors.
The difference between protostomes and deuterostomes can first be analyzed within embryonic development. During development, an opening on the surface of the embryo will event â¦ ually connect to the the developing gut, which is called the archenteron, to the outside environment.he opening on the surface of the embryo is called the blastopore. Later on, a second opening at the opposite end of the embryo turns the pouch-like gut into a digestive tube.