Tetralogy of fallot electrocardiogram

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Priyamvada Singh, M.B.B.S. [2], Keri Shafer, M.D. [3]; Assistant Editor-In-Chief: Kristin Feeney, B.S. [4]

Overview

The EKG often shows right axis deviation and right ventricular hypertrophy in Tetralogy of Fallot. Wider QRS correlates with worse right ventricle dysfunction.
Right atrial enlargement may be present.
Right bundle branch block is present in 95% of patients with tetrology of fellot, particularly following surgical repair.

Class I
"1.Annual surveillance with history, electrocardiogram (ECG), assessment of RV function, and periodic exercise testing is recommended for patients with pacemakers/automatic implantable cardioverter defibrillators.(Level of Evidence: C) "

Class IIa
"1.Periodic Holter monitoring can be beneficial as part of routine follow-up. The frequency should be individualized depending on the hemodynamics and clinical suspicion of arrhythmia.(Level of Evidence: C) "

Class IIb
"1.Electrophysiology testing in an ACHD center may be reasonable to define suspected arrhythmias in adults with tetralogy of Fallot.(Level of Evidence: C) "

v t e Congenital malformations and deformations of circulatory system (Q20-Q28, 745-747)
Cardiac chambers and connections	Persistent truncus arteriosus - Double outlet right ventricle (Taussig-Bing syndrome) - Transposition of the great vessels (dextro, levo)
Cardiac septa	Ventricular septal defect - Atrial septal defect (Lutembacher's syndrome) - Atrioventricular septal defect (Ostium primum) - Tetralogy of Fallot - Eisenmenger's syndrome
Right: pulmonary and tricuspid valves	pulmonary valves (stenosis, insufficiency) - tricuspid valves (stenosis, atresia) - Ebstein's anomaly
Left: aortic and mitral valves	aortic valves (stenosis, insufficiency, bicuspid) - mitral valves (stenosis, regurgitation) - Hypoplastic left heart syndrome
Other congenital malformations of heart	Dextrocardia - Levocardia - Cor triatriatum
Great arteries	aorta (Patent ductus arteriosus, Aortic coarctation, Interrupted aortic arch, Overriding aorta, Aneurysm of sinus of Valsalva, Vascular ring) - Pulmonary atresia
Great veins	Persistent left superior vena cava - Total anomalous pulmonary venous connection - Scimitar syndrome
Other	Arteriovenous malformation (Cerebral arteriovenous malformation)
See also non-congenital conditions (I, 390-459)