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the diagnostic technique in medicine of listening to the various internal sounds made by the body, usually with the aid of a stethoscope



one of the basic methods of examining internal organs by listening to the sound phenomena produced in them. Listening to the heart was first introduced in the second century A.D. by the Greek physician Aretes. The French doctor R. Laënnec (1819) developed the modern method of auscultation by employing for this purpose a “medical tube,” or stethoscope. More frequently a phonen-doscope is used for auscultation. This instrument is a hollow capsule with a sound-transmitting diaphragm that is placed against the body of a patient; rubber tubes connect it to the doctor’s ears.

During auscultation of the lungs one listens for the respiratory noises and the different rales that are characteristic of particular diseases. From the variation of the cardiac tones and the occurrence of noises, the condition of cardiac activity and presence of heart diseases can be ascertained. Arteries may be listened to in order to determine changes in the blood pressure. The presence of peristalsis of the stomach or intestines can be established by auscultation of the abdomen, and in pregnancy the heartbeat of the fetus can be detected.

In veterinary science, auscultation is employed in the diagnosis of diseases of the cardiovascular, respiratory, and gastrointestinal systems of animals. In direct auscultation the investigator places his ear against a sheet or a towel covering the portion of an animal’s body being examined; indirect auscultation is carried out by means of a stethoscope or phonendoscope. Instrumental auscultation was first employed in veterinary science by the Hungarian scientist J. Marek in 1901. In the USSR the auscultation method was perfected by the veterinary scientists K. M. Gol’tsman, N. P. Rukhliadev, A. V. Sinev, A. R. Evgrafov, G. V. Domrachev, V. I. Zaitsev, P. S. Ionov, and I. G. Sharabrin.


Strazhesko, N. D. Izbrannye trudy, vol. 1. Kiev, 1955.
Gubergrits, A. Ia. Neposredstvennoe issledovanie bol’nogo. Izhevsk, 1956.
Klinicheskaia diagnostika vnutrennikh boleznei domashnikh zhivot-nykh. Moscow, 1958.
Sudakov, N. A. “Auskultatsiia.” In Veterinarnaia entsiklopediia, vol. 1. Moscow, 1968.


The act of listening to sounds from internal organs, especially the heart and lungs, to aid in diagnosing their physical state.
References in periodicals archive ?
Our objective was to show that x-ray can be omitted after removal of chest tube by relying on auscultation findings with the condition that chest tube should be removed by trained persons and a proper protocol.
The current recommendation of intermittent auscultation every 15 min in the first stage can be modified to increase the compliance and lessen the unnecessary burden, stress and medico-legal liability for birth attendants.
Various methods have been identified to verify ETT placement in adult mechanically ventilated patients: ultrasonography, the use of centimetre scale printed on the ETT, manual cuff palpation, bilateral auscultation of chest and palpation of symmetrical chest movements, EDDs, visualisation of the ETT, use of CXR, pulse oximetry and capnography.
Inspection, palpation, percussion, and auscultation (including bronchophony, egophony, and whispered pectoriloquy) are steps in a thorough, in-depth assessment.
Not surprisingly, this study revealed that the decoding of organ sounds related to complexity were (in order) bowel, lung, and heart sounds, supporting the findings of other researchers who noted the difficulty in cardiac auscultation (Horiszny, 2001; Stern et al.
It was possible to feel the tube position, and this technique did not need to be done repeatedly to detect tube position unlike auscultation, because it was easy to feel and identify the point of maximum intensity of bubbling by palpation.
A randomized trial of intrapartum electronic fetal heart rate monitoring versus intermittent auscultation.
Search terms used were: intermittent auscultation, fetal heart rate monitoring, fetal surveillance, intrapartum care, and these were not limited by publication date.
Its amazing capacity to detect even the faintest of sounds comes from the following features:Proprietary Ambient Noise Reduction TechnologyThe 3Mao LittmannA Electronic Stethoscope Model 3200 cancels out, on average, 85% of ambient background noise that can interfere with the auscultation experience, without eliminating critical body sounds.
Was the position of the trachea palpated, the thoracic cage percussed, auscultation of lung and heart sounds done?
These include observing for cough and choking, auscultation of air insufflated through the tube, aspiration of fluid, visual inspection of the aspirates, testing of aspirates for pH or concentrations of bilirubin, pepsin or trypsin, observing for bubbling when the tip of the tube is held under water, testing the ability to speak, the use of magnetic detection, spring gauge pressure manometer, capnography, colorimetric capnometry or radiography.
3M's Littmann Electronic Stethoscope Model 3200 is next-generation auscultation device featuring Bluetooth technology that wirelessly transfers heart, lung and other body sounds to software for further analysis.