Direct evaluation of mitral valve function during surgery following conservative procedures

Area of Science:

• Cardiovascular Surgery
• Cardiac Physiology
• Medical Device Technology

Background:

• Assessing mitral valve function during cardiopulmonary bypass is crucial for surgical outcomes.
• Existing methods may carry risks such as systemic air embolism or be limited by conditions like aortic regurgitation.

Purpose of the Study:

• To describe a novel and safe method for evaluating mitral valve function during cardiopulmonary bypass.
• To demonstrate the method's applicability under physiological conditions and in the presence of aortic regurgitation.

Main Methods:

• The described technique involves simultaneous monitoring of left ventricular pressure and aortic root pressure.
• This approach allows for functional assessment of the mitral valve during cardiopulmonary bypass.
• The method is designed to prevent overdistention of the left ventricle.

Main Results:

• The method effectively tests mitral valve function under physiological conditions during cardiopulmonary bypass.
• It successfully avoids the risk of systemic air embolism.
• The technique is applicable even in cases of aortic regurgitation.
• Simultaneous pressure monitoring prevents left ventricular overdistention.

Conclusions:

• The described method provides a safe and reliable means of assessing mitral valve function during cardiopulmonary bypass.
• Its ability to mitigate risks and accommodate specific patient conditions makes it a valuable clinical tool.
• The method has demonstrated a history of satisfactory and safe use since 1970.