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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 .
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.
The same year, Life Fitness expanded into treadmills. Life Fitness was acquired by Brunswick Corporation in June 1997 for $310 million. [5] [6] The sale was completed on July 11, 1997. [7] Later in 1997, Life Fitness bought Hammer Strength, a manufacturer of weight machines. [8] ParaBody, Inc. was bought by Life Fitness in 1998. [9] [10]
The Tonal 2 is a big leap beyond the 1. First of all, the max resistance jumps to 250 (from 200) —that’s less relevant for me, but it does permit a wider range of more expert weight lifters to ...
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 .
Quenten Thomas, 27, a father of three young kids in Maryville, Tennessee, died last week due to complications of the flu. He was coughing and having trouble breathing, his father, Robert Thomas ...
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