ARTERIAL PRESSURE IN MAN 99 



attached a small tambour over the brachial artery at the elbow and 

 connected this with a binaural stethoscope. As the pressure is raised 

 over the upper arm the pulse beats become very distinctly heard in 

 the artery at the elbow, but when the pressure is sufficient to occlude 

 the brachial the beats instantly cease. This observation enables the 

 systolic pressure which is the point of most value clinically to be 

 determined with exactitude. 



