Correlation between tympanogram and middle ear pressure. Some considerations from experimental results.

[Correlation between tympanogram and middle ear pressure--some considerations from experimental results].

We investigated whether the peak position (mmH2O) of tympanogram (TG) always corresponds to the actual middle ear pressure (MEP). Using especially designed plastic models (Endo et al., 1983) to simulate the human middle ear, the experimental results outlined in paragraph (1) and (2) led to the conclusions found in pragraph (3). (1) The position (mmH2O) of TG peak was almost equivalent to the pr...

Morphological considerations about middle ear cholesteatoma.

The aim of this study is to present various morphologic aspects of the middle ear cholesteatoma, concerning both container (tympanic cavity) and content (cholesteatoma). There are two different aspects of the study: a mezoscopic study of the tympanic walls and the elements within the middle ear (ossicular chain, folds, ligaments, middle ear clefts) in order to evidentiate the critical areas (si...

Some Experimental Considerations

sylvania School of Medicine, Philadelphia. Reprint requests: Dr. Morad, Department of Physlology/G4, University of Pennsylvania, Philadelphia 19104 FIGUBE 1. Effect of increased calcium on overshoot of action potential in frog ventricle. Two photographically superimposed records obtained in presence of 0.2 and 3 mM Ca Ringer, respectively. From Niedergerke and Orkand.2 Calcium and Cardiac Elect...

On Pressure Regulation of the Middle Ear

Allergy and recurrent middle ear effusion

Objectives: The aim of this study was to compare the otitis media with effusion (OME) groups that improved when treated with adenoidectomy and Ventilation Tube (VT), to the group of the recurred after surgery and detect the possible role of allergy in OME. Material and Methods: This study was performed on two groups. The Patient group consisted of 38 patients with recurrent OME with allergy an...