Table I.

Abbreviations Used in Text and Symbols Used in Equations

Abbreviations: ET-Eustachian Tube; EV-Expected Value; FGE-Fractional Gradient Equilibrated in 1 swallow; ME-Middle Ear; MEEPG-Middle Ear to Environment Pressure Gradient; MEM-Middle Ear Mucosa; MEPR-Middle Ear Pressure Regulation; NP-Nasopharynx; TM-Tympanic Membrane.

Compartment Symbols: βCs.g –Capacitance Coefficient, CCs–Molar Concentration, ηCs.g–moles, SCs–Solubility, TC–Temperature (°K), PCs.g –Pressure, VC–Volume.

Barrier Symbols: Ab–Surface Area, βbs.g–Capacitance Coefficient, Dbs–Diffusivity-Coefficient, FB/MEM–Blood/Mucosa Volume Ratio, Кms.g–Conductance, Lbd–Diffusion Length, Vb–Volume, Vrb–Mucosal Blood Volume, Qrb–Volume Blood Perfusion Rate.

Eustachian Tube Symbols: FETO–Frequency Eustachian Tube Openings, ΔtETo–Active Eustachian tube opening time, КFGEg–Eustachian Tube Conductance Coefficient, PETOg–Eustachian Tube Opening Pressure, PETCg–Eustachian Tube Closing Pressure.

Exchange Symbols: t – Time, Øbs–species flux (moles/distance;time), MC1–C2s.g–Inter-Compartmental Molar Exchange Rate (moles/time).

Operator Symbols: ║–Given, Δ–Difference, ∂–Change, Σc Sum Over Categories C, ⊠ab–Area Under the Curve from A to B.

Superscript specifies compartment (C), barrier (b), subscript references total gas (g) or species (s).