tetralogy /te·tral·o·gy/ (tĕ-tral´ah-je) a group or series of four.
tetralogy
tetralogy of Fallot a complex of congenital heart defects consisting of pulmonary stenosis, interventricular septal defect, hypertrophy of right ventricle, and dextroposition of the aorta. 
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Tetralogy of Fallot.
te·tral·o·gy (t -tr l  -j , -tr l-)n. A complex of four symptoms. |
tetralogy
[tetrol′əjē]
Etymology: Gk, tetra, four, logos, word
any group of four writings, symptoms, or other related factors. See also tetralogy of Fallot.
tetralogy
a group or series of four.
tetralogy of Fallot
a congenital defect of the heart that combines four structural anomalies: pulmonary stenosis (narrowing of the pulmonary artery); ventricular septal defect, or abnormal opening between the right and left ventricles; dextroposition of the aorta, in which the aortic opening overrides the septum and receives blood from both the right and left ventricles; and right ventricular hypertrophy, or increase of volume of the myocardium of the right ventricle.
This is almost always a lethal defect. There is poor exercise tolerance, dyspnea, often cyanosis. A loud murmur and a strong thrill are palpable on the left side.
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