Tetralogy of Fallot With Absent Left Pulmonary Artery in a Patient Who Passed Critical Congenital Heart Disease Screening

The literature on tetralogy of Fallot (TOF) is abundant. It is a fairly common cyanotic congenital heart disease. It results from the anterior malalignment of the conal septum resulting in the aberrant formation of the ventricular septum leading to a defect. This presents a very important clinical significance because the prognosis usually depends on the clinical evaluation and initiation of timely therapy. We present a two-week-old baby with normal birth history and an uncomplicated newborn nursery course. He also passed the Critical Congenital Heart Disease screen at 24 hours of life. The routine examination by the pediatrician led to further investigations and treatments, highlighting the importance of good history-taking and clinical examination skills.