Trilogy of Fallot


The Trilogy of Fallot is a rare congenital heart disease consisting of the following defects: pulmonary valve stenosis, right ventricular hypertrophy and atrial septal defect. This disease is 1.6-1.8% of all congenital heart defects.

Mechanism

Trilogy of Fallot is a combination of three congenital heart defects: pulmonary stenosis, right ventricular hypertrophy, and an atrial septal defect.
The first two of these are also found in the more common tetralogy of Fallot. However, the tetralogy has a ventricular septal defect instead of an atrial one, and it also involves
Right Ventricular Hypertrophy
an overriding aorta.

The Three Malformations

Diagnosis

Clinically trilogy of Fallot can have cardiomegaly, less symptomatic when compared to ToF, JVP increased, a wave is more elevated, delayed P2, apex beat will be of LV type. S4+, ejection click+,
On doing Cath, RV angiogram, when RV is flicked, to create a RV ectopic, there is post ectopic potentiation of the murmur, unlike ToF

Treatment

is used to surgically correct this pathology.

History

It is named in honor of its discoverer: Etienne Fallot.