tetralogy (redirected from Quadrilogy)

tetralogy /te·tral·o·gy/ (te-tral´ah-je) a group or series of four.

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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.

Tetralogy of Fallot.

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te·tral·o·gy (t-trl-j, -trl-)

n.

A complex of four symptoms.

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tetralogy

a group or series of four.

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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.