THEORY AND DESIGN OF AN ON-LINE CARDIAC OUTPUT COMPUTER

Theory and design of a solid-state circuit for computing cardiac output "on-line" from standard dye dilution techniques is presented. Circuit diagram and suggested values of components are included. This computer will give immediate values for cardiac output in 1/min., signal onset of recirculation, and check validity of exponential downslope. Double-blind study of 57 determinations on 6 dogs comparing planimeter and computer results shows a correlation coefficient of 0.997.