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David Littmann (July 28, 1906 – January 1, 1981) was an American cardiologist and Harvard Medical School professor and researcher. [1] The name Littmann is well known in the medical field for the patented Littmann Stethoscope reputed for its acoustic performances for auscultation .
Ultrasonography (US) inherently provides capability for computer-aided auscultation, and portable US, especially portable echocardiography, replaces some stethoscope auscultation (especially in cardiology), although not nearly all of it (stethoscopes are still essential in basic checkups, listening to bowel sounds, and other primary care contexts).
The stethoscope is a medical device for auscultation, or listening to internal sounds of an animal or human body.It typically has a small disc-shaped resonator that is placed against the skin, with either one or two tubes connected to two earpieces.
This is also known as an "echo" or ultrasound of the heart. [1] It shows the heart structures and blood flow through the heart. Further testing is usually done when symptoms that may be of concern are present. The need for treatment depends on the diagnosis and severity. [1] In some cases, the condition causing the heart murmur may prompt ...
The first heart sound, or S 1, forms the "lub" of "lub-dub" and is composed of components M 1 (mitral valve closure) and T 1 (tricuspid valve closure). Normally M 1 precedes T 1 slightly. It is caused by the closure of the atrioventricular valves , i.e. tricuspid and mitral (bicuspid), at the beginning of ventricular contraction, or systole .
The Austin Flint murmur is named after the 19th century American physician, Austin Flint (1812–1886). [8] He disapproved of associating any physical sign with the name of the original describer, and wrote, "So long as signs are determined from fancied analogies, and named from these or after the person who describes them, there cannot but be obscurity and confusion."
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