Coaching is training or development in which a person called a coach supports a learner in achieving a specific personal or professional goal. The learner is sometimes called a coachee.
From Wikipedia: Tetralogy of Fallot (TOF) is a congenital heart defect which is classically understood to involve four anatomical abnormalities (although only three of them are always present). It is the most common cyanotic heart defect, representing 55-70%, and the most common cause of blue baby syndrome..
Left-to-right shunts are the most common type of congenital heart defect. A left-to-right shunt may not seem like a serious condition because oxygen-rich blood from the left is entering the areas containing oxygen-deficient blood on the right. This blood is then sent to the lungs for oxygenation.