Tante Girang Indo Cantik the history and workings Stethoscope: Probably no symbol of medicine's most famous other than a stethoscope. "hearing aids" that simply allows doctors to hear voices coming from inside the body, especially heart and lung in addition to joints and partially blocked artery. Listening to these sounds with a stethoscope is called auscultation (mediate auscultation), or usually just auscultation. Many sounds from the chest area can be used to diagnose disease. Before the year 1818, the only method available to examine the chest is touching with his hands, percussion, and sometimes, auscultation your ear against the chest.In A Treatise on the Diseases of the Chest and on Mediate Auscultation (1818), R. T. H. Laennec explain the purpose of direct ear pressed to his chest: "This action is not always fun, both for physicians and patients, in women, this action is not only presumptuous, but also difficult to apply, and for people who are in hospital, this action sucks . 'At that time, doctors routinely conduct home visits and treat nearly all patients in his home. Only patients who go to the charity hospital.
Laennec direct auscultation method until 1816, when he was examining a girl with common symptoms of heart disease. Because the patient was obese, young, and women, he felt that the usual method of examination is not appropriate. However, he remembered that when one end of a piece of wood carved with a needle, a voice that will arise can be heard clearly if the other end of the timber attached to the ear. He immediately rolled up several sheets of paper forming a cylinder and attach one end to the ear and the other end into the chest above the heart of the girl. The results were dramatic and encouraging Laennec refine tools. Finally, he creates a hollow wooden cylinder with a length of 30 cm and inner diameter of about 1 cm and outer diameter of 4 cm. He calls this tool as a stethoscope, which means "to see the chest. " In his book, he reported his research on the stethoscope and interpretation of natural and pathological sounds from lung, heart, and voice.Stethoscope currently used are based on original work of Laennec. Main parts of the modern stethoscope is containment (bell), which may be open or closed by a thin membrane, and earpieces.