1 Scientists believe this powerful predator could eat up to 500 pounds (230 kilograms) of meat in one bite. 2  Fossils of T. rex prey, including Triceratops and Edmontosaurus, suggest T. rex crushed and broke bones as it ate, and bone fragments have been found in its dung.
Etiology. Infection is the principal cause of tympanic membrane perforation (TMP). Acute infection of the middle ear may cause a relative ischemia in the drum concurrent with increased pressure in the middle ear space.This leads to a tear or rupture of the eardrum that is usually preceded by severe pain. If the perforation does not heal, it leaves a residual tympanic membrane perforation (TMP).nfection is the principal cause of tympanic membrane perforation (TMP). Acute infection of the middle ear may cause a relative ischemia in the drum concurrent with increased pressure in the middle ear space.
Background. The extremely thin and delicate tympanic membrane (TM) is the first component of the middle ear conductive system. The TM is easily traumatized, and diseases of the TM deprive patients of their ability to work and to enjoy life. With the appearance of fluid in the middle ear, these phenomena disappear from the surface of the TM, so observing the fluid is possible. 2  The inflammatory process of an upper respiratory tract infection affects the TM in the form of myringitis. 3  The TM becomes red and thickened, and the light reflex disappears.