Junctional Rhythms

Junctional Rhythms : 

Junctional Rhythms Galveston College EMS Paramedic 2009

Electrical Flow in Junctional Arrhythmias : 

Electrical Flow in Junctional Arrhythmias

Electrode Placement for Monitoring EKG : 

Electrode Placement for Monitoring EKG

Inverted P Wave : 

Inverted P Wave

Inverted P Wave (Hidden) : 

Inverted P Wave (Hidden)

Inverted P Wave : 

Inverted P Wave

Premature Junctional Contraction : 

Premature Junctional Contraction An irritable site in the AV junction fires prematurely, producing a single ectopic beat. Conduction to atria is retrograde while simultaneous conduction to ventricles is normal.

Premature Junctional Contraction : 

Premature Junctional Contraction Regularity: Depends on rhythm of underlying arrhythmia Rate: Depends on rate of underlying arrhythmia P Wave: Inverted; can fall before, during, or after QRS complex PRI: Can only be measured if P wave precedes QRS complex; if measurable, will be less than .12 seconds QRS: Less than .12 seconds

Premature Junctional Contraction : 

Premature Junctional Contraction

Junctional Escape Rhythm : 

Junctional Escape Rhythm When higher pacemaker sites fail, the AV junction takes over. The atria are depolarized via retrograde conduction, while ventricular conduction is normal.

Junctional Escape Rhythm : 

Junctional Escape Rhythm Regularity: Regular Rate: 40–60 beats per minute P Wave: Will be inverted; can fall before, during, or after QRS complex PRI: Can be measured only if P wave precedes QRS complex; if measurable, will be less than .12 seconds QRS: Less than .12 seconds

Junctional Escape Rhythm : 

Junctional Escape Rhythm

Accelerated Junctional Rhythm : 

Accelerated Junctional Rhythm An irritable focus in the AV junction fires repeatedly at a rate faster than the SA node, thus taking over as primary pacemaker. Conduction to atria is retrograde, while simultaneous conduction to ventricles is normal.

Accelerated Junctional Rhythm : 

Accelerated Junctional Rhythm Regularity: Regular Rate: 60–100 beats per minute P Wave: Will be inverted; can fall before, during, or after QRS complex PRI: Can be measured only if P wave precedes QRS complex; if measurable, will be less than .12 seconds QRI: Less than .12 seconds

Accelerated Junctional Rhythm : 

Accelerated Junctional Rhythm

Junctional Tachycardia : 

Junctional Tachycardia A single irritable site within the AV junction fires repeatedly at a very rapid rate. Conduction to atria is retrograde, while simultaneous conduction to ventricles is normal.

Junctional Tachycardia : 

Junctional Tachycardia Regularity: Regular Rate: 100–180 beats per minute P Wave: Will be inverted; can fall before, during, or after QRS complex PRI: Can be measured only if P wave precedes QRS complex; if measurable, will be less than .12 seconds QRS: Less than .12 seconds

Junctional Tachycardia : 

Junctional Tachycardia

Supraventricular Tachycardia : 

Supraventricular Tachycardia Phrase used to describe a rapid, regular supraventricular arrhythmia when more accurate identification is impossible because P waves aren’t visible and rate is common to other arrhythmias. SVTs with Overlapping Rate Ranges: Sinus Tachycardia 100-160 beats/min Atrial Tachycardia 150-250 beats/min Atrial Flutter 150-250 beats/min Junctional Tachycardia 100-180 beats/min