Left atrial pressure pulses can appear similar across different mitral valve lesions depending on the volume-pressure characteristics of the left atrium, complicating preoperative evaluation.
Similar LA pressure pulses may confound mitral lesion differentiation preoperatively; leaves open the influence of atrial compliance on hemodynamic interpretation.
The difficulties of preoperative evaluation of patients with combinations of mitral stenosis and incompetence prompted analysis of the left atrial pressure pulse in a series of patients studied by left atrial puncture. Theoretic considerations indicate that similar pressure pulses may be produced by a variety of mitral valve lesions if the volume-pressure characteristics of the left atrium are appropriate. An explanation is offered for the differences found in the presence of mitral regurgitation.
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Hamer et al. (1959) studied this question.
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