1232 
MONITORING 
Elec. zero 
Right Femoral 
Artery occluded 
Elec. zero Attempted occlusion 
Right Main Coronary 
Artery 
occluded 
FIGURE l.-Flow measurements showing the electrical or non-occlusive zero compared to the occlusive zero in the 
femoral and right main coronary artery and the aorta of a dog. 
