Heart pearls! » Ventricular tachycardia http://www.heartpearls.com For all cardiology enthusiasts! Bonjour! Click on the title above to go to site index so that you can browse the articles! Sun, 18 Jul 2010 07:59:48 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 ECG image -003 http://www.heartpearls.com/2009/07/ecg-003.html http://www.heartpearls.com/2009/07/ecg-003.html#comments Mon, 27 Jul 2009 11:03:04 +0000 Dr Jayachandran Thejus MD http://www.heartpearls.com/?p=496 Belhassen VT with capture beat

Belhassen ventricular tachycardia ecg image

Diagnosis- Belhassen’s tachycardia (posterior fascicular ventricular tachycardia)

Pointers-

1. QRS is wide, but not very wide, the width being 120 msec. This makes it difficult to differentiate whether this is VT or SVT.

2. Capture beat indicating that it is VT, not SVT.

3. RBBB + left axis deviation, the characteristic pattern in Belhassen’s tachycardia.

Comments are welcome!

]]> http://www.heartpearls.com/2009/07/ecg-003.html/feed 1 ECG- Supraventricular tachycardia with aberrancy- features to distinguish from ventricular tachycardia http://www.heartpearls.com/2009/06/what-are-the-main-features-of-supraventricular-tachycardia-with-aberrancy-that-helps-to-distinguish-if-from-ventricular-tachycardia.html http://www.heartpearls.com/2009/06/what-are-the-main-features-of-supraventricular-tachycardia-with-aberrancy-that-helps-to-distinguish-if-from-ventricular-tachycardia.html#comments Tue, 02 Jun 2009 13:53:21 +0000 Dr Jayachandran Thejus MD http://www.heartpearls.com/?p=197
  • RBBB pattern (rsR’ in v1 or qrS in v6).
  • Initial part of the complex is similar to a sinus rhythm complex.
  • Similar complexes seen earlier when patient was in sinus rhythm and then was clearly diagnosed as aberrant conduction.
  • Complex ending a short RR interval after a long RR interval (preceding long RR- short RR sequence; second in a row phenomenon; Ashman phenomenon).
  • The suspected complexes are all having preceding P waves.
  • RBBB and LBBB patterns seen- more likely to be alternating BBB due to varying aberrancy rather than ventricular tachycardias from both ventricles.
    • ]]>     http://www.heartpearls.com/2009/06/what-are-the-main-features-of-supraventricular-tachycardia-with-aberrancy-that-helps-to-distinguish-if-from-ventricular-tachycardia.html/feed 0     Can you rely on AV dissociation to differentiate ventricular tachycardia from supraventricular tachyarrhythmia with aberration? http://www.heartpearls.com/2009/06/can-you-rely-on-av-dissociation-to-differentiate-ventricular-tachycardia-from-supraventricular-tachyarrhythmia-with-aberration.html http://www.heartpearls.com/2009/06/can-you-rely-on-av-dissociation-to-differentiate-ventricular-tachycardia-from-supraventricular-tachyarrhythmia-with-aberration.html#comments Tue, 02 Jun 2009 13:35:31 +0000 Dr Jayachandran Thejus MD http://www.heartpearls.com/?p=194 No, because-

    1. AV dissociation is not present in many VTs- due to retrograde conduction of ventricular tachycardia through the AV node to cause atrial activation.

    2. It may not be always possible to identify P waves on top of the VT. This is more common than appreciated.

    3. There may not be P waves- patient may be in atrial fibrillation along with VT!

    4. Sometimes junctional tachyarrhythmias may conduct down with aberrancy, but may not conduct up into the atria. So dissociated P waves will be present.

    ]]>     http://www.heartpearls.com/2009/06/can-you-rely-on-av-dissociation-to-differentiate-ventricular-tachycardia-from-supraventricular-tachyarrhythmia-with-aberration.html/feed 0