MEDICINE
CARDIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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left leg.
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left arm.
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right leg.
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right arm.
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Detailed explanation-1: -A positive QRS deflection in lead l means the vector is heading toward the: Left arm. Atrial kick is defined as : The volume of blood that the atria contract to the ventricles.
Detailed explanation-2: -If the electrical current is flowing towards the lead then a positive deflection will be seen. If flowing away from lead then a negative deflection will be seen.
Detailed explanation-3: -The mean QRS axis normally points downward and to the patient’s left, between 0 and +90 degrees. An axis between +90 and +180 degrees indicates right axis deviation, and one between 0 and-90 degrees indicates left axis deviation.
Detailed explanation-4: -Left Axis Deviation If the QRS is upright in lead I (positive) and downward in lead aVF (negative), then the axis is between 0 and-90 degrees.