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The unipolar limb leads (aVR, aVL, aVF) are three of the standard leads used in an electrocardiogram (ECG) to record electrical activity of the heart from different angles. They provide information on the heart's electrical activity in the frontal plane of the body.

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1y ago

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What is the difference between bipolar and unipolar leads?

I believe that a unipolar lead is one with a single lead while a bipolar lead is one with multiple or 2 or more leads.


What are the first set of leads to be recorded on an electrocardiogram called?

standard or bipolar limb leads?


What augmented leads monitor?

one limb electrode and a point midway between two other limb electrodes.


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chest limb and augmented--------------------------------------------------------------------------------Standard Limb Leads (Bipolar) "Einthoven's Triangle"Lead I: right and left arms (lateral wall)Lead II: right arm and left foot (inferior wall)Lead III: left arm and [usually] foot (inferior wall)- Note that the right arm is always negatively charged and the left foot is always positively chargedAugmented Leads (Unipolar*)aVR: right arm (no specific view)aVL: left arm (lateral wall)aVF: left leg [usually foot] (inferior wall)Precordial "Chest" Leads (Unipolar*)- see link called "precordial 'chest' leads" in related links for diagramV1: 4th intercostal space to right of sternum (septal wall)V2: 4th intercostal space to left of sternum (septal wall)V3: between leads V2 and V4 (anterior wall)V4: 5th intercostal space at midclavicular line (anterior wall)V5: level with V4 at left anterior axillary line (lateral wall)V6: level with V5 at left midaxillary line, directly under midpoint of armpit (lateral wall)* It's important to note that with the unipolar leads, they work assuming that the "center point" is negative and the ends (the actual lead placement) are positive.


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