Independence of left ventricular pressure-volume ratio from preload in man early after coronary artery bypass graft surgery.

Load Independence of the Instantaneous Pressure-Volume Ratio of the Canine Left Ventricle and Effects of Epinephrine and Heart Rate on the Ratio

1973 • 1,468 citations

End-systolic pressure/volume ratio: A new index of ventricular contractility

1977 • 602 citations