QRS axis: Difference between revisions
→Abnormal heartaxis
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#When the heart itself is rotated (right ventricular overload), obviously the axis turns with it. | #When the heart itself is rotated (right ventricular overload), obviously the axis turns with it. | ||
#In case of ventricular hypertrophy, the axis will deviate by the bigger electrical activity and the vector will turn towards the hypertrophied tissue. | #In case of ventricular hypertrophy, the axis will deviate by the bigger electrical activity and the vector will turn towards the hypertrophied tissue. | ||
#Infarcted tissue is electrically dead. No electrical activity is registered and the QRS vector turns away from the | #Infarcted tissue is electrically dead. No electrical activity is registered and the QRS vector turns away from the infarcted tissue | ||
#In conduction problems, the axis deviates too. When the right ventricle depolarizes later than the left ventricle, the axis will turn to the right (RBBB). This is because the right ventricle will begin the contraction later and therefore will also finish later. In a normal situation the vector is influenced by the left ventricle but now only by the right ventricle. | #In conduction problems, the axis deviates too. When the right ventricle depolarizes later than the left ventricle, the axis will turn to the right (RBBB). This is because the right ventricle will begin the contraction later and therefore will also finish later. In a normal situation the vector is influenced by the left ventricle but now only by the right ventricle. | ||