The degree of blocking in the atrioventricular node is specified by counting the number of flutter waves preceding each QRS complex . If 3 flutter waves occur before each QRS complex then it is 3:1 block. If there are 2 flutter waves before each QRS complex then it is 2:1 block.
How do you calculate atrial flutter ratio?
The degree of blocking in the atrioventricular node is specified by counting the number of flutter waves preceding each QRS complex . If 3 flutter waves occur before each QRS complex then it is 3:1 block. If there are 2 flutter waves before each QRS complex then it is 2:1 block.