vector and describe unipolar leads. State the main difference Q3. a) Define the

Question

vector and describe unipolar leads. State the main difference Q3. a) Define the cardiac b) Design the lead connections for the VL and aVL (augmented) leads. Explain c) Find the cardiac vector (magnitude and the angle) shown in the Fig.3 if the recorded d) For the cardiac vector given in part (c), determine measured VF and aVF values. between the standart Limb leads and unipolar leads. the reason of your resistor choises in your design. Find a relation between VL and a VL, using the modified Wilson's central terminal and the equivalent circuits for both. values of the limb leads are Vr=-1.74 mV,VIF 7.65 m1V and Vin= 939 mV.

Explanation / Answer

The cardiac vector is the net result of the directions of the spread of depolarization waves from the SA node through the atria, AV node, interventricular septum, ventricles, and to the apex of the heart, the last part of the heart to be depolarized is the base of the heart.

An EKG lead consists of two surface electrodes of opposite polarity (one positive and one negative) or one positive surface electrode and a reference point. A lead composed of two electrodes of opposite polarity is called bipolar lead. A lead composed of a single positive electrode and a reference point is a unipolar lead.

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