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Junctional tachycardia results from enhanced automaticity, increased sympathetic activity (catecholamines) and ischemia. Key features of this rhythm include a rate over 100 / minute, inverted or absent P waves (in lead II) , shortened PR interval, and QRS complexes that are usually narrow. Note the inverted P wave buried in each QRS complex displayed here in this ECG.
Junctional Tachy.mp4DIAGNOSIS
DIAGNOSIS
Heart Rate (100-180 bpm), faster than the normal junctional rhythm but slower than many supraventricular tachycardias. P Waves Absent or Inverted P Waves.
TREATMENT
TREATMENT
Amiodarone is an antiarrhythmic medication used to reduce heart rate. Other treatments may include catheter ablation or external pacemakers, particularly after heart surgeries like valve replacement.
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