EHRLICH, TOSHEFF, CALDINI, KRAUSMAN, SCHRIJEN AND BRADY 
20 l.min-'^ 
569 
AORTIC FLOW 
STROKE VOLUME 
125ml min-' 
CORONARY FLOW 
0.5 ml 
2.5ml 
Qc*r. JO** 
I 
ISOmmHg 
AORTIC PRESSURE 
SOmmHg 
■fSmmNg 
RAP 
0-- 
■ 5 mmHg 
0 
INTRAPLEURAL PRESSURE 
-4 mmHg 
200 b.min"' 
I 
HEART RATE 
60 b.m 
I 
in-'l 
Figure 3. — Recording at 25 mm sec"'. 
branch of the left coronary artery only. The 
phasic blood pressure in the root of the aorta is 
recorded in channel seven. The eighth and ninth 
channels record the right atrial pressure and 
the pleural pressure changes, respectively. In 
the last channel, the heart rate is monitored by 
a cardiotachometer (Beckman 9875D) trig- 
gered by the onset of each ejection. 
At the left side of Figure 4, the recording of 
the cardiovascular functions at rest and of their 
