QRS axis: Difference between revisions

42 bytes added ,  26 December 2007
monorvarsito
(deltaa)
(monorvarsito)
Line 1: Line 1:
trdroncao
boctroccn
boctroccn
{{nav|
{{nav|
Line 48: Line 49:
* First, when a positive depolarization wave moves towards a positive electrode, a positive, upwards deflection is registered on the ECG.
* 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:
*Second, there are 4 quadrants where the QRS-vector can point to:
**left upper quadrant --> left axis deviation (between -30º and -90º)
**left upper quadrant --> left axis deviation (between -30º and -90º)
**left lower quadrant --> normal (between -30º and 90º)
**left lower quadrant --> normal (between -30º and 90º)
**right below and right --> right axis deviation (between 90º and -150º)
**right below and right --> right axis deviation (between 90º and -150º)
**right upper quadrant --> extreme axis (between -90º and -150º)
**right upper quadrant --> extreme axis (between -90º and -150º)


''Example'':  
''Example'':  
Anonymous user