642 
PHYSIOLOGY 
STROKE WORK / ENDDI ASTQLIC VOL 
100 X DOG ^ 132 
VENT. PACING + CONTROL + NOREPI. INF. 0.4 MICROGMS/KG/MIN {.llth P O DAY) 
Y = -9.65 + 1.128 X (1) 
Y = -31.5 + 1.548 X (2) 
Y = -8.86 + 1.359 X (3) 
75.. 
GM-M 
50 
25 
25 
50 
ML 
75 
100 
FiGtjRE 9. — Shows the stroke work/end-diastolic volume relationship during the steady state while infusing nore- 
pinephrine (3). The regression lines from Figures 7 and 8 are also shown. 
on cardiac function in complete A-V heart block. 
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