Differential Diagnosis Functional/innocent murmurs(normal) Still murmur Aged 2 to early adolescence May related to turbulent flow across th left ventricular outflow tract Best heard at left lower sternal border Never associated with a thrill Differential Diagnosis ◼ Functional/innocent murmurs (normal) Still murmur Aged 2 to early adolescence May related to turbulent flow across th left ventricular outflow tract Best heard at left lower sternal border Never associated with a thrill