because of the placement of the positive electrodes, and the predominant direction of the depolarization wave of the heart, the qrs complex is ________ in lead i and ii.

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gabriellarose1923 gabriellarose1923

26-10-2022
Biology

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because of the placement of the positive electrodes, and the predominant direction of the depolarization wave of the heart, the qrs complex is ________ in lead i and ii.

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rafikiedu08 rafikiedu08 · Answer 1 · 2022-10-28T01:56:41-04:00

Because of the placement of the positive electrodes, and the predominant direction of the depolarization wave of the heart, the QRS complex is Positive in lead i and ii.

Both of the bipolar limb leads (leads 1 and 2) exhibit positive deviation (upright) during ventricular depolarization, as shown in a typical ECG recording.

The heart is depolarized to begin contracting with each beat. The skin can detect this electrical activity, which is carried throughout the body. The ECG operates on this premise. Electrodes placed on the skin are used by an ECG machine to graphically record and show this activity. Ten electrical cables must be fastened to the body for an ECG: one to each limb and six across the chest.

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