| phonocardiograph | <apparatus> An instrument, utilizing microphones, amplifiers, and filters, for graphically recording the heart sounds, which are displayed on an oscilloscope or analog tracing. Linear phonocardiograph, a phonocardiograph that records all chest wall vibrations resulting from cardiac activity, with emphasis on low frequency vibrations due to its filter characteristics. Logarithmic phonocardiograph, a phonocardiograph that records only theoretically audible vibrations with emphasis on the higher frequencies due to filter characteristics designed to imitate the logarithmic frequency-intensity response of the human auditory apparatus. Spectral phonocardiograph, an instrument for recording the heart sounds in which the electrical changes created by the latter pass from a microphone through a series of filters, each of which is tuned to a particular frequency band; output from each filter activates a separate light source of brightness proportional to the intensity of the sound transmitted through that filter; the lights are arranged vertically in descending order of frequencies. A record is obtained by photographing the vertical row of lights. Stethoscopic phonocardiograph, a phonocardiograph that records all sound vibrations, audible and inaudible, conveyed by the stethoscope; however, very low frequency vibrations (in the range of body movements) are filtered out. (05 Mar 2000) |
|---|---|
| phonocardiography | Graphic registration of the heart sounds picked up as vibrations and transformed by a piezoelectric crystal microphone into a varying electrical output according to the stresses imposed by the sound waves. The electrical output is amplified by a stethograph amplifier and recorded by a device incorporated into the electrocardiograph or by a multichannel recording machine. (12 Dec 1998) |
Synonyms : Phonocardiographies
| phonocardiograph |
the instrument used in phonocardiography, generally comprising a microphone, amplifier, filters, and a recording device.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
|
|---|---|
| phonocardiographic |
pertaining to phonocardiography or to a phonocardiogram.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
|
| phonocardiography |
the graphic representation of heart sounds, murmurs, or any acoustic phenomena emanating from the heart; in clinical use, the term usually includes recording of the pulse tracings (carotid, apex, and jugular venous) for completeness, and is often combined with other noninvasive methods such as echocardiography.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
|
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|