Andersen-Tawil syndrome electrocardiogram: Difference between revisions

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* A long QTc (LQT) interval
* A long QTc (LQT) interval
* T-U patterns which are very characteristic to the syndrome.
* T-U patterns which are very characteristic to the syndrome.
*U waves enlargement which are biphasic in limb leads
*Prominent U-wave enlargement which are biphasic in limb leads
*A wide T-U junction
*A wide T-U junction
*Prolonged terminal T-wave
*Prolonged terminal T-wave
*Premature ventricular contractions
*Premature ventricular contractions (PVC) especially at '''"rest"''' in Andersen - Tawil syndrome (ATS) patients
* Polymorphic ventricular tachycardia
* Polymorphic ventricular tachycardia (PMVT) which is called bidirectional ventricular tachycardia (BiVT)
* Bidirectional ventricular tachycardia


==Electrocardiogram==
==Electrocardiogram==

Revision as of 03:41, 9 February 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Charmaine Patel, M.D. [2]; Raviteja Guddeti, M.B.B.S. [3]

Overview

An ECG may be very helpful in the diagnosis of Andersen-Tawil Syndrome. Findings on an ECG diagnostic of Andersen-Tawil Syndrome include a long QTc (LQT) interval, U waves, wide T-U junction and T-waves.

Electrocardiogram

An ECG may be helpful in the diagnosis of Andersen-Tawil Syndrome. Findings on an ECG diagnostic of Andersen-Tawil Syndrome include:

  • A long QTc (LQT) interval
  • T-U patterns which are very characteristic to the syndrome.
  • Prominent U-wave enlargement which are biphasic in limb leads
  • A wide T-U junction
  • Prolonged terminal T-wave
  • Premature ventricular contractions (PVC) especially at "rest" in Andersen - Tawil syndrome (ATS) patients
  • Polymorphic ventricular tachycardia (PMVT) which is called bidirectional ventricular tachycardia (BiVT)

Electrocardiogram

Although polymorphic ventricular tachycardia is a common arrhythmia in patients with Anderson syndrome, decompensation into a hemodynamically compromising rhythm, or ventricular fibrillation, is rare. The following EKG findings are seen in patients with Andersen-Tawil syndrome:

  • Biphasic U waves in limb leads
  • Widened T-U junction
  • Large U waves
  • Prolonged terminal T wave downslope
  • Prolonged Q-U intervals

References


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