308 
SURGERY AND TRANSPLANTATION 
INNOMINATE 
VMCCN 
LT. THORACIC 
VAGUS 
ANSA 
SUBCLAVIA 

STELLATE 
GANGLION 
Figure 10. — Regional Denervation of the Canine Heart. 
Lt. Lateral View of Heart 
sympathetic innervation of AV node; It.-sided origin 
REFERENCES 
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D.- V. Influence of ventricular epicardiectomy on 
cardiac responses to stellate ganglion stimulation. 
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7. Geis, W. P. and Kaye, M. P. Distribution of sympa- 
thetic fibers in the left ventricular epicardial plexus 
of the dog. Circ. Res. 23:165-170, 1968. 
8. Randall, W. C, Armour, J. A., Geis, W. P., and 
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DISCUSSION 
Karl Weber, University of Alabama, Bir- 
mingham, Ala. : Dr. Geis' eloquent paper is now 
open for discussion. I would like to reiterate 
Dr. Geis' comments about chronic instrumenta- 
tion when implanting electromagnetic flow 
probes around the aorta, pulmonary artery, or 
left main coronary artery. We had best con- 
