Digital Vascular Resistance in Normal, Polycythemic and Hypertensive States
The relationship between blood pressure and flow in the digital circulation has been found to be rectilinear. This makes it possible from a single pressure-flow determination to measure (1) digital vascular configuration volume index, (2) initial digital arterial caliber, (3) resistance in dyne second/cm.5, (4) resistance in dynes and (5) resistance in dynes/cm.2. The normal variations in these values and the deviations from the normal found in hypertension and polycythemia are presented.
- © 1951 American Heart Association, Inc.