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.
aVL (unipolar left arm electrode) -> augmented voltage/vector left aVR (unipolar right arm electrode) -> augmented voltage/vector right aVF (unipolar left leg electrode) -> augmented voltage/vector foot
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.
vertical
FOUR
A 3-lead ECG records electrical activity from three points on the body, while a 12-lead ECG records from 12 points. The 12-lead ECG provides a more comprehensive view of the heart's electrical activity, allowing for better detection of abnormalities. This increased number of leads improves the accuracy of cardiac monitoring by providing more detailed information about the heart's function and potential issues.
LEAD DISPLACEMENT
it is the short form of augmented voltage unipolar left arm lead. It is a technical term used in electrocardiography.
diode is unipolar
ST elevation
The wave direction indicated whether the electrical impulse from the heart is going towards or away from the ECG lead that is being studied.
Unipolar NRZ (Non-Return-to-Zero) uses continuous voltage for the entire bit duration, while Unipolar RZ (Return-to-Zero) resets the voltage to zero halfway through the bit duration. This means that Unipolar RZ has more frequent voltage transitions compared to Unipolar NRZ in the time domain.