Question

write about invention of sethoscopestory behind is invantion and biography of inventory

Answer 1

Answer:

Rene Theophile Hyacinthe Laënnec (1781–1826) was a French physician who, in 1816, invented the stethoscope. Using this new instrument, he investigated the sounds made by the heart and lungs and determined that his diagnoses were supported by the observations made during autopsies. Laënnec later published the first seminal work on the use of listening to body sounds, De L’auscultation Mediate (On Mediate Auscultation). Laënnec is considered the father of clinical auscultation and wrote the first descriptions of bronchiectasis and cirrhosis and also classified pulmonary conditions such as pneumonia, bronchiectasis, pleurisy, emphysema, pneumothorax, phthisis and other lung diseases from the sounds he heard with his invention. Laënnec perfected the art of physical examination of the chest and introduced many clinical terms still used today.

Keywords: Mediate auscultation, Tuberculosis, Laënnec’s Cirrhosis, Melanoma, Ventricular systole, Atrial systole

The stethoscope may be the one instrument common to all doctors. The word stethoscope comes from the Greek words stethos, meaning chest, and skopein, meaning to explore. This instrument may even supersede the caduceus as the symbol of medicine – no other symbol so strongly identifies a doctor than a stethoscope dangling around the neck like a talisman. The story of how this remarkable invention came to be and the life of its inventor are described.

In September 1816, during a cool morning, while walking in the courtyard of the Le Louvre Palace in Paris, Dr. Rene Theophile Hyacinthe Laënnec, a 35-year-old French physician, observed two children sending signals to each other using a long piece of solid wood and a pin. With an ear to one end, the child received an amplified sound of the pin scratching the opposite end of the wood. Later that year, Laënnec was called to a young woman with “general symptoms of a diseased heart.”1,2 Both application of his hand to the chest and percussion offered little diagnostic assistance. Laënnec was reluctant to start immediate auscultation (placing the doctor’s ear on the patient’s chest) because of the age, sex and plumpness of the patient. In this moment of embarrassment, Laënnec recalled his observation of the children’s wood borne signaling. It was this observation that inspired Laënnec’s invention of the stethoscope.3 He described the invention as follows (translated from French by John Forbes, 1834):

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