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Korotkoff sounds are the sounds that medical personnel listen for when they are taking blood pressure using a non-invasive procedure. They are named after Nikolai Korotkov , a Russian physician who discovered them in 1905, [ 1 ] when he was working at the Imperial Medical Academy in St. Petersburg , the Russian Empire.
A mammary souffle is a maternal cardiac murmur heard over the breasts. [citation needed] A mammary souffle is present in late pregnancy or during lactation. [4] It is a benign continuous heart sound, which disappear after lactation. It's supposed to arise from superficial arteries supplying the lactating breast and for that reason called a ...
Sound waves may be viewed using parabolic mirrors and objects that produce sound. [ 9 ] The energy carried by an oscillating sound wave converts back and forth between the potential energy of the extra compression (in case of longitudinal waves) or lateral displacement strain (in case of transverse waves) of the matter, and the kinetic energy ...
Heart sounds of a healthy human female with a functional or "innocent" heart murmur after exercise. A functional murmur ( innocent murmur , physiologic murmur ) is a heart murmur that is primarily due to physiologic conditions outside the heart, as opposed to structural defects in the heart itself. [ 1 ]
Heart murmurs are unique heart sounds produced when blood flows across a heart valve or blood vessel. [1] This occurs when turbulent blood flow creates a sound loud enough to hear with a stethoscope. [2] The sound differs from normal heart sounds by their characteristics. For example, heart murmurs may have a distinct pitch, duration and timing.
If the wave is a sound wave and the sound source is moving faster than the speed of sound, the resulting shock wave creates a sonic boom. Lord Rayleigh predicted the following effect in his classic book on sound: if the observer were moving from the (stationary) source at twice the speed of sound, a musical piece previously emitted by that ...
The numbers of birds taking part in the evening displays over Albert Bridge had dropped in recent years.
Respiratory sounds, also known as lung sounds or breath sounds, are the specific sounds generated by the movement of air through the respiratory system. [1] These may be easily audible or identified through auscultation of the respiratory system through the lung fields with a stethoscope as well as from the spectral characteristics of lung sounds. [2]