Regular Sinus Rhythm (RSR)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Sinus Bradycardia
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Sinus Tachycardia
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Sinus Arrhythmia
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Regular Sinus Rhythm with Premature Atrial Contractions (NSR with PACs)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
NSR with First Degree AV Block
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Second Degree Block (Wenchebach or Mobitz I)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Second Degree Block (Mobitz II)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Third Degree Block ( complete heart block)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Junctional Rhythm
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Accelerated Junctional Rhythm
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
NSR with Premature Ventricular Contractions (NSR with PVCs)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Accelerated Idioventricular Rhythm (AIVR)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Ventricular Tachycardia
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Ventricular Fibrillation
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Supra Ventricular Tachycardia (SVT)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Atrial Fibrillation (Afib)
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Atrial Flutter
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Agonal
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Asystole
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
basic structure of the rhythm 


 
Calculating the heart rate 

The easiest method of calculating the heart rate is to divide 1500 by the number of small boxes between the R waves.
You can also divide 300 by the number of large boxes between the R waves. 
 
Sick Sinus Syndrome
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Atrial Tachycardia
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
Torsades
Rate:
Reg?:
P for every QRS:
P wave:
QRS: 


 
The electrical conduction of the heart 


 