thaler chapter 1

1   The Basics

42

− 150°

− 30°

+60°

+90°

+ +

lead aVF +

lead aVL

lead aVR

In the next figure, all six leads of the frontal plane are indicated with their appropriate angles of orientation. Just as our three inquisitive observers each looked at the elephant from his or her own unique perspective, each lead perceives the heart from its own unique point of view.

− 90

( − 150 )

aVL ( − 30 )

aVR

I(0 )

180

II (+60 )

(+120 ) III

aVF (+90 )