AVf in an ECG refers to the Augmented Vector Foot lead, also known as the Left Foot lead. This is one of the limb leads used in electrocardiography (ECG) to measure the electrical activity of the heart.
Understanding AVf
Here's a breakdown:
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Augmented Vector Foot: This describes how the electrical signal is measured. The AVf lead "looks" at the heart's electrical activity from the direction of the left foot.
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Left Foot: This is the physical location where the electrode for this lead is typically placed (usually on the left leg or ankle).
ECG Leads and the Triangle
The AVf lead, along with other leads (AVr and AVl), forms a triangle around the heart. The lines extending from these leads towards the center represent their "line of sight" or the direction from which they detect the heart's electrical signals. These signals help doctors assess the heart's health and identify any abnormalities.
