Stock image Frontal Qrs Axis
When The Frontal QRS Axis Is At +83, The R Amplitude Of Lead AVF Is The Highest.The Frontal QRS Axis Is Almost Perpendicular To The Axis Of Lead .
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R Wave Greater Than S Wave Is Judged To Be Positive; R Smaller Than S Is Judged To Be Negative; R Equal To S Amplitude Is Judged To Be Equipotential.
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When Ectopic Impulses Originate In The Left Atrium, An Upright P Wave Will Be Generated In V1 And An Inverted P Wave In Lead AVL.
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