6.3 Signals of the Cardiovascular System

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Fig. 6.15: ECG-Leads according to Einthoven

and Goldberger with 3 recording Points in the

Frontal Plane. The potentials are measured at

the Left arm (LA), Right arm (RA) and Left Foot

(LF). Grounding is applied to the right Foot (RF),

which should also help to Reduce Interference

such as the 50 Hz mains hum.

Fig. 6.16: ECG-Leads according to Wilson with

6 recording points V1 to V6 in the horizontal

plane: the measuring points are approxim-

ately parallel to the 5th rib from the top.

–

three potentials each according to Einthoven (I,II,III)andGoldberger(aVR, aVL, aVF)

in the frontal plane, cf. Figure 6.15,

–

six potentials according to Wilson (V1toV6) in the horizontal plane, cf. Figure 6.16.

Einthoven-Leads

As already mentioned in subsection 3.2.2, measurements are taken between two re-

cording points each, the locations being on the left and right arms and on the left

foot. The foot serves as a reference point and the measured voltages VI, VII and VIII