The heart sound Conditions causing prominent $2 Physiology (infants and children) Congestive heart failure Ventricular septal defects (large QP/Qs Mitral insufficiency Hyperdynamic ventricular with high outputThe Heart Sound ◼ Conditions causing prominent S2 Physiology (infants and children) Congestive heart failure Ventricular septal defects (large QP/QS) Mitral insufficiency Hyperdynamic ventricular with high output