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QRS axis

42 bytes added, 05:15, 26 December 2007
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* First, when a positive depolarization wave moves towards a positive electrode, a positive, upwards deflection is registered on the ECG.
*Second, there are 4 quadrants where the QRS-vector can point to:
**left upper quadrant --> left axis deviation (between -30º 30º and -90º90º)**left lower quadrant --> normal (between -30º 30º and 90º90º)**right below and right --> right axis deviation (between 90º 90º and -150º150º)**right upper quadrant --> extreme axis (between -90º 90º and -150º150º)
''Example'':
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