CARDIOVASCULAR FUNCTIONS— D'AMATO 



151 



z 



o 

 o 



O 



Q 

 O 

 O 



_J 

 CD 



>- 



< 



O 



a: 

 o 

 o 



65 



55 



45 



35 



25 



15 



From: Berne 



Circulation Research: 2 , 237 1954 



,19*0 



1 



X 



140 120 100 80 60 40 



PERFUSION PRESSURE mm.hg 



Fig. 6. — Coronary blood flow in the hypothermic dog. 



20 



TABLE I 



Effect of Elevation of Perfusion Pressure on CorSnary Blood Flow, Aortic Pressure, 

 AND Heart Rate in the Hypothermic Dog 



Right Coronary 



atrial perfusion Coronary Aortic 



temperature pressure blood flow pressure Heart rate 



Exp. (°C.) (mm. Hg) (cc./min.) (mm. Hg) (beats/rain.) 



J2\.0 Without pump, 37 4.0 45/30 75 

 \2L0 With pump, 112 36.0 48/30 76 



f21.0 Without pump, 62 18.5 80/51 48 

 |21.0 With pump, 87 38.5 81/51 46 



. r25.5 Without pump, 58 11.0 68/54 57 

 |25.5 With pump, 121 37.5 67/52 60 



fl9.0 Without pump. 46 14.0 67/40 31 

 1 19.0 With pump, 117 74.5 68/41 32 



^^ (21.5 Without pump, 40 10.5 55/29 37 

 ')21.5 With pump, 98 74.5 54/28 37 



26 20.5 Without pump, 106 18.0 1 18/92 26 



With pump, 124 32.0 119/93 26 



From: Berne, Circulation Research s: 238, 1954. 



