Transmission of Applied Pressure Through Tissues: Interstitial Fluid Pressure, Solid Tissue Pressure, and Total Tissue Pressure

Abstract

Interstitial fluid pressure (Pif) of the dog was measured from capsules implanted in subcutaneous tissue of the upper and lower hindleg 4 to 8 weeks prior to use. (The capsules were a disk-shaped hollow (6 mm x 9 mm i.d.) porous polyethylene matrix (Bolab, Inc.) with an average pore size of 65 μm.) Total tissue pressure (Ptot) was measured either with small flaccid balloons inserted subcutane-ously or, more frequently, by the needle method for measuring total tissue pressure (see (3) for a discussion of these methods).