Popular guidelines / July 22, 2020

What are the types of tympanic membrane perforation?

The type of perforation seen were central 57.6%, subtotal 33.3%, total 6.1%, marginal 3.0%. The sides affected were left ear 45.5%, right ear 15.2%, and both ears 39.4%. The causes found were chronic suppurative otitis media (CSOM) 90.9%, acute suppurative otitis media (ASOM) 6.1%, and trauma to the affected ear 3.0%.

What is perforation of the tympanic membrane called?

Tympanic membrane perforation, also known as a perforated eardrum, is a hole in the thin membrane that separates the ear canal from the middle ear.

What is dimeric tympanic membrane?

Thin eardrums (dimeric segments) occur with spontaneous closure of the perforation where the healed segment lacks the fibrous (struc- tural) layer. This creates a part of the eardrum where it is often easier to see middle ear structures and therefore it looks like a hole in the eardrum (see figure 6).

What is Type 3 tympanoplasty?

Background: Type III stapes columella tympanoplasty involves the placement of a tympanic membrane graft, usually made of temporalis fascia, directly onto the stapes head. The procedure is usually done in conjunction with a canal wall down mastoidectomy.

What is Hypercompliant tympanic membrane?

Hypercompliant tymp on the left side due to a floppy eardrum. When the eardrum is floppy, perhaps due to overly exhuberant ear popping or a break in the ossicular chain, then less sounds is reflected back and the tympanogram looks “peaked” (see above).

What is monomeric tympanic membrane?

Information: A monomere is a area of thin, transparent tympanic membrane due to the absence of the dense fibrous layer. It usually occurs after a perforation. A monomere will not usually affect the audiogram. The tympanogram may be normal or show increased mobility with a higher peak at the normal pressure.

How many layers are in the tympanic membrane?

The drum membrane has three layers: the outer layer, continuous with the skin on the external canal; the inner layer, continuous with the mucous membrane lining the middle ear; and, between the two, a layer of radial and circular fibres that give the membrane its tension and stiffness.

What is a monomeric tympanic membrane?

What is the meaning of monomeric tympanic membrane?

When a TM perforation heals, the mucosal and squamous layers reepithelialize, but the fibrous layer won’t reform, resulting in a thinner two-layer membrane (paradoxically termed “monomeric”).