NCIt definition : A heart murmur that occurs predominantly in midsystole, when ejection volume and velocity
of blood flow are at their maximum; it is produced by ejection of blood into the pulmonary
artery and aorta. It is typically crescendo-decrescendo.;
Alternative definition : ACC/AHA: An auscultated finding of a heart murmur heard predominantly in midsystole,
when ejection volume and velocity of blood flow are at their maximum; it is produced
by ejection of blood into the pulmonary artery and aorta. Typically crescendo-decrescendo.;