PPT-Tympanic membrane perforation

A  perforated eardrum  or  punctured eardrum  is a rupture or perforation hole of the eardrum which can occur as a result of  otitis media ear infection trauma eg by trying to clean the ear with sharp instruments explosion noise or surgery accidental creation of a rupture. . Clark . W. Walker, MD, FACS. Lone Tree, CO. cwalker@integratedENT.com. . Audiologists and Otolaryngologists. Denver Hearing Specialists, Lone Tree, Colorado. Diane Krieger-Arenberg, Au.D.. meatus.tsound. . From. the . meatus. , the external auditory canal passes inward to the tympanic membrane (eardrum(-. The middle ear is an air-filled cavity in the temporal bone that opens via the auditory (. BIO 211:. Dr. Lawrence G. Altman. www.lawrencegaltman.com. Some illustrations are courtesy of McGraw-Hill.. The. EAR. Part 1 of 2. SPECIAL. . SENSES. LABS. :. . . Dr. Lawrence G. Altman. www.lawrencegaltman.com. Tympanic membrane perforation after removal of . tympanostomy. ventilation tube. . Tympanic Membrane Perforation. Definition. A hole or tear in the . eardrum(s. ). Usually results from disease, trauma, or iatrogenic causes. The ear consists of 3 different sections. 1. The External Ear. 2. The Middle Ear. - The Auditory . Ossicles. 3. The Inner Ear. . Anatomy of the Ear. Vestibulocochlear . nerve (VIII). EXTERNAL EAR. Cholesteatoma is an abnormal . squamous epithelium. skin growth often found behind the eardrum in the . middle ear. .. It can erode and destroy structures within the middle ear and cause hearing loss as well as many CNS complications including brain abscess and meningitis.. Eustachian Tube. /. Auditory Tube. ]. Presented by :- Dr. . Sushma. . Tomar. Associate Professor. Department of Anatomy . Introduction. An . osseo. -cartilaginous. tube.. Retraction pocket is the invagination of tympanic membrane into the middle ear space. It is frequently a result of chronic OME or prolonged dysfunction of the Eustachian tube. . Chronic retraction pocket. By . Dr.Abdullhussein. Kareem. COM it is persistent inflammation of the middle ear mucosa and \or mastoid process for more than 3 months and can be classified into the followings.. The old classification . Causes. . can include:. Post-nasal epistaxis with dysfunction of the Eustachian tubes. Severe head trauma. Coagulopathy . Chronic otitis media. Spontaneous . hemotympanum. (rare cause). Vascular lesions (. Sandeep. . Madhukar. . Lahange. Associate Professor. Department of . Sharir. . Rachana. National Institute of . Ayurveda. . Jaipur. External ear. Auricle/. pinna. 2. External acoustic . meatus. external 1/3(8 mm) by cartilage . Ear. The ear converts changes in pressure in the air to changes in the electrical activity of neurons. . The . human ear can detect sound frequencies between 20 and 20 000 Hz.. Anatomists distinguish the outer ear, the middle ear, and the inner ear. Although middle ear trauma is not the �rst priority in the context of life-threatening injuries, the ear is particularly susceptible to damage and easily forgotten in patients with multiple . By the end of the lecture the student should be able to:. List the parts of the ear: . External. , . Middle. . (tympanic cavity) . and . Internal (labyrinth).. Describe the parts of the external ear:.