What Leads Makeup the Einthovens Triangle

Einthoven’s triangle is an imaginary formation of three limb leads in a triangle used in electrocardiography, formed by the two shoulders and the pubis. The shape forms an inverted equilateral triangle with the heart at the center. It is named after Willem Einthoven, who theorized its existence.

Which side of einthoven's triangle is formed by lead I?

Lead I extends horizontally from the right arm to the left arm, with the actual left arm electrode being the positive pole. Lead II forms one of the vertical arms of the triangle and stretches from the right hand to the left leg with the electrode positioned on the left leg being the positive pole.

What plane does the 3 lead ECG placement einthoven's triangle view the heart in?

Leads I, II, III, aVF, aVL and aVR are all derived using three electrodes, which are placed on the right arm, the left arm and the left leg. Given the electrode placements, in relation to the heart, these leads primarily detect electrical activity in the frontal plane.