无害性杂音(iNNOCENT MURMURS)又称生理性杂音、良性杂音、功能性杂音或血流性杂音。无害性杂音的诊断,除根据杂音本身的特征外,主要是根据无心血管异常的存在。虽然无害性杂音的本质是生理性的,但是由于对杂音的不正确认识,常常给小儿及其家长造成沉重的思想负担,甚至影响升学、参军和工作。以致不少人到处求医。既增加了家长的经济负担,也不利于小儿的健康成长。因此,准确地把无害性杂音从器质性杂音中区分开来,是十分必要 Harmless murmur (iNNOCENT MURMURS), also known as physical murmur, benign murmur, functional murmur or blood flow murmur. Harmless murmur in the diagnosis, except according to the characteristics of the murmur itself, mainly based on the existence of cardiovascular abnormalities. Although the nature of harmless murmurs is physiological, the incorrect understanding of murmur frequently places a heavy mental burden on children and their parents, and even affects further education, joining the army and work. As a result, many people seek medical treatment everywhere. Not only increase the financial burden on parents, but also not conducive to the healthy growth of children. Therefore, it is imperative to distinguish exactly innocuous murmurs from organic murmur