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首页> 外文期刊>The American Journal of Cardiology >Innocent murmurs: a suspect diagnosis in non-pregnant adults.
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Innocent murmurs: a suspect diagnosis in non-pregnant adults.

机译：无辜的杂音：在非怀孕成年人中的可疑诊断。

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The physics of turbulence include Reynolds numbers, but they argued that these do not apply for biomedical applications. However, the 2 key variables, viscosity and flow velocity, are conceptually useful. They also warned that turbulence and murmurs are not equivalent, obvious from Doppler studies of children with innocent murmurs who demonstrate no turbulence or abnormal velocities. The musical Still's murmur contrasts with the noise generated by abnormalities of heart valves. McKusick compared the Still's murmur with the Aeolian harp's strings set into vibration by the wind. He looked for analogues in the heart and suggested false chords, but he failed to acknowledge that these become flaccid during systole. McKusick did not suggest the normal chords of the septal leaflet of the tricuspid valve that are tightened in systole by papillary muscles and traverse the pulmonary outflow, nor has anyone else, to the author's knowledge. The location of the Still's murmur was found in the pulmonary outflow by microphonic catheterization. The innocent ejection murmurs in children and pregnant women are not musical but are associated with decreased hematocrit and increased ejection velocity compared to nonpregnant adults. The aorta has been suggested as the origin of Still's murmur, but that study was done in older adults with angina who presumably had aortic valvular sclerosis. In conclusion, innocent murmurs in childhood are not normally found in adults, except for pregnant women whose blood viscosity and velocity resemble children's. When murmurs are found in nonpregnant adults, echocardiography is prudent.
机译：湍流物理学包括雷诺数，但他们认为这些不适用于生物医学应用。但是，粘度和流速这两个关键变量在概念上是有用的。他们还警告说，湍流和杂音不相等，这从多普勒对无天真杂音的儿童进行的多普勒研究中可以看出，这些孩子没有湍流或速度异常。音乐剧Still的杂音与心脏瓣膜异常产生的噪音形成对比。麦克库西克将斯蒂尔的杂音与风吹动的风琴琴弦进行了比较。他在心脏中寻找类似物，并提出了虚假的和弦，但他未能承认这些在心脏收缩期间变得松弛。 McKusick并未暗示三尖瓣间隔小叶的正常弦在乳头肌收缩时收缩，并横穿肺流出，据作者所知，也没有其他人。死音杂音的位置是通过超声导管插入法在肺外流中发现的。与未怀孕的成年人相比，儿童和孕妇的无辜弹射杂音不是音乐性的，而是与血细胞比容降低和弹射速度增加有关。主动脉被认为是斯蒂尔杂音的起源，但是这项研究是在患有心绞痛的老年人中进行的，他们可能患有主动脉瓣硬化。总之，除了血液粘度和血流速度类似于儿童的孕妇以外，成人通常不会在童年时出现无辜的杂音。如果在未怀孕的成年人中发现杂音，则应谨慎行超声心动图检查。

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