Abstract
Observations were made on the changes of the cerebral blood flow caused by the ligation of the common carotid artery in 5 clinical cases and 10 dogs.
In the clinical cases, the fact was revealed that Po2 of jugular venous blood after 5 min.of ligation normal jugular venous blood, and Po2 of jugular venous blood, and Po2of jugular venous blood after 1min.and 30sec.of ligation of the common carotid
It is considered from this fact that if the ma- ximum duration of ligation of the common carotid artery is 3 min., Po2 of the carotid artery blood surgery.
In the cases of dogs, transition of Po2 and pH of blood presented the same trend as that of the clinical cases, but the degrees were smaller.
