Key Learning Points
                                Intervals and Segments
                            
                                                 
                        
                            
                            
                                
        
            
            QT Interval Page 9
            
                - The QT Interval represents depolarization and repolarization of the ventricles.
- The QT Interval is measured from the beginning of the QRS complex to the end of the T wave.
- The QT Interval will vary depending on the heart rate, age and gender.
 
            
         
        
            
            R-R, P-P Interval Page 10
            
                - P-P intervals verify atrial regularity(a).
- R-R intervals verify ventricular regularity(b).
- Rhythm regularity is an important piece of information used in rhythm identification.