Also, that blood flowing through a VSD can be heard as a holosystolic murmur at the lower left sternal border.

并且，血液流经VSD时，在左下胸骨边缘听诊就会听到全收缩期杂音。

This holosystolic murmur is best heard at the mitral region -the apex, with radiation to the left axilla.

该全收缩期杂音在二尖瓣部位-心尖部听诊最清晰，放射至左腋下。