MDF – Stethoscope Red – NSL 747XP23

Riester – Stethoscope Black Edition Duplex is an acoustic医疗的device for听诊那or listening to the internal sounds of an animal or human body. It typically has a small disc-shaped resonator that is placed against the chest, and two tubes connected to earpieces. It is often used to listen to lung and心声。It is also used to listen tointestinesand blood flow in动脉and静脉。In combination with asphygmomanometer，它通常用于测量血压。Less commonly, “mechanic’s stethoscopes”, equipped with rod shaped chestpieces, are used to listen to internal sounds made by machines (for example, sounds and vibrations emitted by worn ball bearings), such as diagnosing a malfunctioning automobile engine by listening to the sounds of its internal parts. Stethoscopes can also be used to check scientific vacuum chambers for leaks, and for various other small-scale acoustic monitoring tasks. A stethoscope that intensifies验证sounds is calledPhonendoscope.。

听诊器通常被认为是医疗保健专业人员的象征，因为各种医疗保健提供者经常被悬挂在颈部周围的听诊器。2012年研究论文声称，听诊器与其他医疗设备相比，对从业者看到的医生的感知值得信赖性具有最高的积极影响。^[13]

实际的出现，普遍存在便携超声检查（护理点超声检查）在20世纪90年代末到2000年代初，导致一些医生询问它在听诊前的时间很快过时的。^[14]Others answered that they thought the relationship of the various tools (stethoscopes and digital devices) would change but that it would be a long time before stethoscopes were obsolete.^[15]A decade later, in 2016, the same two sides of the coin were still recognized.^[16]一cardiologistsaid, “the stethoscope is dead”, but a pediatrician said, “We are not at the place, and probably won’t be for a very long time”, where stethoscopes were obsolete. One consideration is that it depends on the segment of卫生保健（紧急医疗服务那nursing那药物）和专业。“听诊器保留了他们的收听价值lungsandbowelsfor clues of disease, experts agree.”^[16]但对于这件事而言心血管系统那“auscultation is superfluous”, one cardiologist said.^[16]Thus, it could be that cardiology in the中学and高等教育在之前的情况下，设置可能会放弃听诊器初级卫生保健那儿科那and物理疗法做。