Andersen-Tawil syndrome electrocardiogram: Difference between revisions
| Line 16: | Line 16: | ||
*[[Premature ventricular contraction|Premature ventricular contractions]] ([[Premature ventricular contraction|PVC]]) especially at '''"rest"''' in Andersen-Tawil syndrome (ATS) patients | *[[Premature ventricular contraction|Premature ventricular contractions]] ([[Premature ventricular contraction|PVC]]) especially at '''"rest"''' in Andersen-Tawil syndrome (ATS) patients | ||
**[[Premature ventricular contraction|PVC's]] at rest helps in differentiating ATS from [[catecholaminergic polymorphic ventricular tachycardia]] ([[Catecholaminergic polymorphic ventricular tachycardia|CPVT]]) | **[[Premature ventricular contraction|PVC's]] at rest helps in differentiating ATS from [[catecholaminergic polymorphic ventricular tachycardia]] ([[Catecholaminergic polymorphic ventricular tachycardia|CPVT]]) | ||
*[[Polymorphic ventricular tachycardia]] (PMVT) which is called [[Bidirectional Ventricular Tachycardia|bidirectional ventricular tachycardia]] (BiVT) | *[[Polymorphic ventricular tachycardia]] (PMVT) which is called [[Bidirectional Ventricular Tachycardia|bidirectional ventricular tachycardia]] (BiVT)<ref name="pmid11812408">{{cite journal| author=Khan IA| title=Clinical and therapeutic aspects of congenital and acquired long QT syndrome. | journal=Am J Med | year= 2002 | volume= 112 | issue= 1 | pages= 58-66 | pmid=11812408 | doi=10.1016/s0002-9343(01)01011-7 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11812408 }}</ref> | ||
**PMVT is defined as when the beats are more than 100/min with variation in QRS axis. | |||
*In [[Andersen-Tawil syndrome|ATS]] when the patient deteriorates we can see [[Ventricular fibrillation|VF]] which can lead to [[sudden death]] | *In [[Andersen-Tawil syndrome|ATS]] when the patient deteriorates we can see [[Ventricular fibrillation|VF]] which can lead to [[sudden death]] | ||
Revision as of 06:06, 9 February 2020
|
Andersen-Tawil syndrome Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Andersen-Tawil syndrome electrocardiogram On the Web |
|
American Roentgen Ray Society Images of Andersen-Tawil syndrome electrocardiogram |
|
Risk calculators and risk factors for Andersen-Tawil syndrome electrocardiogram |
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:[1]
- A long QTc (LQT) interval
- T-U patterns which are very characteristic to the syndrome[2]
- 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
- PVC's at rest helps in differentiating ATS from catecholaminergic polymorphic ventricular tachycardia (CPVT)
- Polymorphic ventricular tachycardia (PMVT) which is called bidirectional ventricular tachycardia (BiVT)[3]
- PMVT is defined as when the beats are more than 100/min with variation in QRS axis.
- In ATS when the patient deteriorates we can see VF which can lead to sudden death
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
- ↑ Kukla P, Biernacka EK, Baranchuk A, Jastrzebski M, Jagodzinska M (2014). "Electrocardiogram in Andersen-Tawil syndrome. New electrocardiographic criteria for diagnosis of type-1 Andersen-Tawil syndrome". Curr Cardiol Rev. 10 (3): 222–8. doi:10.2174/1573403x10666140514102528. PMC 4040873. PMID 24827800.
- ↑ Zhang L, Benson DW, Tristani-Firouzi M, Ptacek LJ, Tawil R, Schwartz PJ; et al. (2005). "Electrocardiographic features in Andersen-Tawil syndrome patients with KCNJ2 mutations: characteristic T-U-wave patterns predict the KCNJ2 genotype". Circulation. 111 (21): 2720–6. doi:10.1161/CIRCULATIONAHA.104.472498. PMID 15911703.
- ↑ Khan IA (2002). "Clinical and therapeutic aspects of congenital and acquired long QT syndrome". Am J Med. 112 (1): 58–66. doi:10.1016/s0002-9343(01)01011-7. PMID 11812408.