258 



PHYSIOLOGY OF INDUCED HYPOTHERMIA 



ducted ; one in which the middle cerebral artery of the dog was transected at its 

 origin at normal body temperature, and a second in which the same procedure was 

 done during hypothermia of 22 to 24° C. Following division of the artery, the 

 animal was rewarmed to normal body temperature, observed for three weeks, and 

 then sacrificed. 



Figure 5 shows the coronal sections of the brain of a normothermic dog fol- 

 lowing occlusion of the left middle cerebral artery. Note the severe degree of 

 infarction. 



tirir»tt 



^pl m^ <8^ % ^ 



li|Wlilili|il!ijii!i!l!fPH!i!l!!llll|H!iJl!i!|ill!|llh^ 



2473 LT 



Fig. 5. — Coronal brain sections of normothermic dog with occluded cerebral artery 



