dogs were instrumented chronically with an aortic catheter for the measurement of mean aortic pressure , hydraulic occluder cuffs on the descending aorta and inferior vena cava , a left ventricular catheter for the measurement of left ventricular pressure and heart rate , and a nonocclusive catheter in the left circumflex coronary artery .
C0003483
aortic
C0011666
descending aorta