Acoustic analysis of the closing sounds of implanted prosthetic heart valves

Karen J. Reynolds; Richard O. Stephen

doi:10.1121/1.413663

Acoustic analysis of the closing sounds of implanted prosthetic heart valves

Karen J. Reynolds, Richard O. Stephen

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Previous in vitro studies [K. J. Reynolds, Ph.D. thesis (1994); K. J. Reynolds and R. O. Stephen, J. Acoust. Soc. Am. 97, 60-68 (1995)] have shown that it is possible to detect minor mechanical changes to a prosthetic heart valve by acoustic analysis of the valve's closing sounds. This current study investigates the sounds produced by prosthetic valves implanted in patients. To reduce signal distortion at the thoracic surface, recordings were made with the patient submerged in water. Results show that stable reproducible averaged spectra can be obtained from implanted valves provided recording conditions are kept constant. The respiration cycle does not affect the recorded spectrum.

Original language	English
Pages (from-to)	69-77
Number of pages	9
Journal	Journal of the Acoustical Society of America
Volume	98
Issue number	1
DOIs	https://doi.org/10.1121/1.413663
Publication status	Published - 1 Jan 1995
Externally published	Yes

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Acoustic analysis of the closing sounds of implanted prosthetic heart valves

Abstract

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