- Diagnosis
- History
- Examination
- Investigations
- History
- Management
- Procedures
Tachyarrhythmias
Fast heart rhythms on an ECG may be caused by supraventricular or ventricular rhythms, some of which are imminently life threatening and require rapid assessment.
Narrow Complex Tachycardia
- Approach to Narrow Complex Tachycardia
Sinus Tachycardia
Regular narrow complex tachycardia with uniform P waves and PR intervals
Focal Atrial Tachycardia
Regular narrow complex tachycardia with abnormal yet consistent P waves
Multifocal Atrial Tachycardia
Irregular narrow complex tachycardia with multiple P wave morphologies and variable PP intervals
Atrial Flutter
Regular narrow complex tachycardia with sawtooth waves
Atrial Fibrillation
Irregular narrow complex tachycardia with absence of P waves and disorganised atrial activity
AV Nodal Reentrant Tachycardia
Regular narrow complex tachycardia with P waves hidden within QRS
AV Reentrant Tachycardia
Orthodromic or antidromic
Regular narrow complex tachycardia with P waves visible after QRS (orthodromic)
Wide Complex Tachycardia
- Causes of wide complex tachycardia
- Distinguishing VT and SVT with aberrancy
Monomorphic Ventricular Tachycardia
Regular tachycardia with broad QRS
Polymorphic Ventricular Tachycardia
Multiple ventricular ectopic morphologies
SVT with Aberrancy or Preexcitation
Regular tachycardia with broad QRS complexes
AF with Aberrancy or Preexcitation
Irregular tachycardia with broad QRS complexes
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Cosío FG. Atrial Flutter, Typical and Atypical: A Review. Arrhythmia & electrophysiology review. 2017 Jun;6(2):55.Falk RH. Atrial Fibrillation. New England Journal of Medicine. 2001 Apr 5; 344: 1067-1078.Katritsis DG, Zareba W, Camm AJ. Nonsustained ventricular tachycardia. Journal of the American College of Cardiology. 2012 Nov 13;60(20):1993-2004.Kistler PM, Roberts-Thomson KC, Haqqani HM, Fynn SP, Singarayar S, Vohra JK, Morton JB, Sparks PB, Kalman JM. P-wave morphology in focal atrial tachycardia: development of an algorithm to predict the anatomic site of origin. Journal of the American College of Cardiology. 2006 Sep 5;48(5):1010-7.Pava LF, Perafán P, Badiel M, Arango JJ, Mont L, Morillo CA, Brugada J. R-wave peak time at DII: a new criterion for differentiating between wide complex QRS tachycardias. Heart rhythm. 2010 Jul 1;7(7):922-6.Roberts-Thompson KC, Kistler PM, Kalman JM. Focal atrial tachycardia I: clinical features, diagnosis, mechanisms, and anatomic location. Pacing and clinical electrophysiology. 2006 Jun;29(6):643-52.Rosso R, Kistler PM. Focal atrial tachycardia. Heart. 2010 Feb 1;96(3):181-5.Schoonderwoerd BA, Smit MD, Pen L, Van Gelder IC. New risk factors for atrial fibrillation: causes of not-so-lone atrial fibrillation. Europace. 2008 Jun 1;10(6):668-73.