Fallot tetralogy course not corrected during pregnancy. about a case

Fallot tetralogy is the most prevalent cyanogenic congenital heart disease. After one year of age, representing 10% of congenital heart defects and 75% of cyanotic heart defects. It is characterized by misalignment (anterior, superior, and right of the infundibular septum), causing the four known elements of pulmonary artery infundibular stenosis, aortic thrust, and ventricular septal defect, and hypertrophy of the right ventricle. Pregnancy in non- operated women has an associated maternal mortality rate of 3% to 12%, a perinatal loss rate (up to 30%). Women who become pregnant are exposed to hemodynamic stress and a gradual increase in the severity of pulmonary stenosis, exacerbating symptoms, and increased cyanosis. Below we present the case of a patient diagnosed with tetralogy of Fallot diagnosed in adolescence without surgical correction, due to lack of financial resources who reaches the end of pregnancy, without adequate prenatal control, and exacerbation of symptoms in the last trimester, due to which interrupts pregnancy via the abdomen, with a favorable evolution during the puerperium.