Abstract
The viscoelastic properties of freshly harvested middle ear effusion (MEE) from children were determined by an oscillating sphere magnetic rheometer and compared with transportability of MEE on mucus-depleted frog palate. The elastic modulus (G') at 1 Hz of MEE from 43 untreated ear was ranged from 1.9 to 1,790 dyn/cm2 and the mean value was 28.4 dyn/cm2. The dynamic viscosity (eta') at 1 Hz of the same samples was ranged from 0.2 to 146 poise with the mean value of 3.4 poise. A maximum value of transport was obtained at G' of about 20 dyn/cm2, and below this value there was a significant positive correlation between the transport rate and log G'. Above 20 dyn/cm2, the negative correlation between the transport rate and log G' was significant. A similar significant correlation between the transport rate and log eta' was observed.
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