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A Look at Some Types of Electronic Stethoscopes

A stethoscope, also called a diaphragm-like or flexible instrument, is used to hear the sounds produced by the heart, lungs, veins and other internal structures. (b) Stethoscope – Body Model. This refers to a stethoscope that has built-in, motorized diaphragm and a valve for breathing air into the case. Stethoscopes have a variety of types.


This refers to the ability to hear sounds that are associated with human hearing loss and medical professionals refer to these sounds as audiograms. An audiogram is an auditory test that is based on the ability of the patient to hear and detect low-frequency sounds, above the frequencies that are normally audible to the normal person. The importance of audiometry to medical professionals can not be underestimated.


The process of hearing or smelling the first parts of the respiratory passage through which air is taken in and out of the lungs. The senses of smell and sight are combined with the acoustics of the stethoscope to produce a series of sounds that are associated with different portions of the respiratory tract. These sounds are then amplified, which allows the person to hear or to sense different parts of the respiratory system. Auscultation is used in the Diagnostic and Treatment of Deviated Severe Delirium (DSD) and Middle Ear Deficiency (Meadow Disease).

Pulse Oximeter

A pulse oximeter is a medical device that uses a handheld pulse oximeter that is connected to a computer. This device is used by doctors to measure and record the oxygen saturation of a patient’s blood. It can also determine the patient’s pulse rate and blood flow rate, which are important in the management of certain medical conditions such as acute respiratory distress syndrome, chronic obstructive pulmonary disease and sleep apnea.

Intermittent, External Apparatus (IIA)

An IIA is any medical device that is not designed for the purpose of providing audible sound or music but is used instead for non-audible monitoring and measurement of various parameters. Some medical professionals refer to IIA as intermittent listening devices, since they are less likely to provide feedback to the user than do stethoscopes. Examples of IIA medical devices are blood pressure cuffs and finger pads.

Electronic Stethoscope

An electronic stethoscope uses two probesticks that are placed on the stethoscope’s earpieces. One of the sticks is designed to generate a sound of the patient’s heart. The other stick produces an electromagnetic signal that can detect irregularities in the patient’s blood flow. These two devices are attached to the stethoscope with the aid of hearing aid that enhances the signal.


These types of stethoscopes are attached to the doctor’s face so that he can hear the heartbeat from the abdomen. Audiometers are attached to the face of the stethoscope via a stethoscope jack that has an optical valve. When the patient moves his head, the probe moves to listen to his heart. When a patient’s eyes are closed, it appears that he is lying down but in actuality, his eyes are moving.

Hearing Aids

The three main categories of hearing aids are conductive, sensorineural and mixed. Some kinds of stethoscopes, including those used by audiometrician, have extra conductive elements like a metal diaphragm or spring clips that provide additional hearing aids.

Auricle Interferometry

This is used to identify the location and size of the auricle, the thin membrane that surrounds the inside of the ear. Ultrasound helps determine this by turning the patient’s body toward the light source. If there is an obstruction, sound waves or ultrasound will show up as dark spots on the earlobe or outer rim of the ear. If the auscultation detects problems with the eardrum or the inner ear structure, this is called auras.

Other Uses

In addition to detecting heart sounds, other kinds of auscultation instruments like the traditional stethoscope can be used to detect urinary problems, lung problems, abnormal noises, tumors, cysts, infections, dental abnormalities and more. It also enables doctors to evaluate the patient during a physical examination.

Stethoscopes evolved from the traditional wood and metal medical instrument into the sleek, thin, lightweight electronic medical stethoscope that we have today. It is important for doctors to know what each type of stethoscope is good for because some types work better than others for certain medical issues. And of course, some stethoscopes are more expensive than others. Because of this, it’s important to get as much information as possible about the different types of stethoscopes to make the right selection for the right use.

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