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Related Experiment Videos

ACOUSTIC CHANGES IN NORMALLY FUNCTIONING MITRAL VALVE PROSTHESES: ECHO-PHONOCARDIOGRAPHIC OBSERVATIONS.

Ulrich Busch1, Leonard W. Pechacek, Efrain Garcia

  • 1St. Luke's Episcopal Hospital-Clayton Foundation for Research Laboratory and the Texas Heart Institute, Houston, Texas.

Cardiovascular Diseases
|June 1, 1978
PubMed
Summary

Variability in the intensity of the closing click (CC) from premature valve closure is a normal finding in prosthetic valves. Combined echo-phonocardiography aids in assessing prosthetic valve function with unusual sounds.

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Medical Acoustics

Background:

  • Prosthetic heart valves can exhibit variable closing click (CC) intensity.
  • These sound alterations are often considered normal phenomena in various prosthetic valve designs.

Purpose of the Study:

  • To confirm previous findings regarding the variability of the closing click (CC) intensity.
  • To highlight the utility of combined echocardiography and phonocardiography in evaluating prosthetic valve function.

Main Methods:

  • Utilized combined echo-phonocardiography.
  • Analyzed auditory and visual data from prosthetic valve function.

Main Results:

  • Confirmed that variability in CC intensity is a consequence of premature valve closure.

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  • Demonstrated that these alterations are a normal phenomenon in multiple prosthetic valve models.

    • Conclusions:

    • The study validates previous observations on CC intensity variability in prosthetic valves.
    • Combined echo-phonocardiography is a valuable tool for diagnosing prosthetic valve dysfunction, especially when auscultatory findings are atypical.