Chapter 20: Fundamentals of Tympanoplasty

Myringoplasty is the reconstruction procedure of a perforation of the tympanic membrane (TM).

The reconstruction of the TM is termed:

There are two classes of tympanoplasty. One of them is:(check all that apply)

Historically both pigs bladders and paper have been used as TM perforation repairs by surgeons.

The tympanic membrane is formed from three sources: ectoderm, mesoderm, and endoderm. This occurs during which week of embryological gestation?

The average size of the TM in mm’s is:

The TM is perpindicular to the floor of the meatus.

The TM is set at an angle of _____ degrees from the floor of the meatus.

The TM is _____ microns thick.

The blood supply in the TM is marginal and _____.

The area of the TM compared to the area of the stapedial footplate is a ratio of:

The middle ear transforms acoustical pressure waves into fluid waves by:

Due to the normal function of the ossicular chain, the transduction translates into an increase of _____ dB as a result of the lever action and transformer relationship of the middle ear.

The most common cause of TM perforations is:

The most common penetrating trauma of TM perforations is from:

A slap to the head can perforate the TM.

Iatrogenic etiology of TM perforations is basically caused by:

A patient with thermal trauma resulting in TM perforations may expect the TM to spontaneously heal _____% of the time.

As a rule, _____% of traumatic TM perforations heal spontaneously.

Tympanoplasty in chidren enjoy a success rate of _____%.