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Related Experiment Videos

Problems associated with mechanical heart valve sounds.

D Limb1, P H Kay, A J Murday

  • 1Department of Cardiothoracic Surgery, Leeds General Infirmary, UK.

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|January 1, 1992
PubMed
Summary
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Most patients with Bjork-Shiley mechanical heart valves experience problems from valve noise, including annoyance and sleep disturbance. Younger patients and females reported more issues, highlighting the need for pre-operative counseling and improved prosthesis design.

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Surgery
  • Patient Experience Research

Background:

  • Mechanical heart valves, such as the Bjork-Shiley tilting disc valve, are crucial for patients with severe heart conditions.
  • Auditory perception of mechanical heart valve sounds can significantly impact patient quality of life.
  • Understanding patient reactions to valve sounds is essential for improving long-term outcomes.

Purpose of the Study:

  • To investigate factors influencing patient perception and reaction to sounds from Bjork-Shiley mechanical heart valves.
  • To identify the prevalence and nature of problems associated with mechanical heart valve sounds.
  • To inform pre-operative patient counseling and future prosthetic valve design.

Main Methods:

  • A cross-sectional study involving 50 randomly selected patients.

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  • Patients were assessed 12-36 months post-implantation of Bjork-Shiley mechanical heart valves.
  • Data collected on patient-reported issues related to valve sounds, including annoyance, sleep disturbance, concentration interference, and social embarrassment.

    • Main Results:

    • A high percentage of patients reported problems: 68% experienced annoyance, 52% sleep disturbance, 36% interference with concentration, and 28% social embarrassment.
    • Problems were not correlated with sound levels or valve specifics (number/position), but younger age and female sex were associated with increased issues.
    • No significant impact of patient personality was found, though psychological morbidity was noted in the cohort.

    Conclusions:

    • The majority of patients experience significant issues directly related to the audible noise of their mechanical heart valves.
    • Pre-operative patient education regarding potential valve noise and its impact is crucial.
    • Consideration of patient-reported sound-related problems should guide the design and evaluation of new mechanical heart valve prostheses.