Haemodynamic factors influencing opening snap interval in mitral stenosis.
Various haemodynamic measurements were correlated with the A2-OS interval in 35 patients with pure or predominant mitral stenosis. There was good correlation of left atrial V wave pressure, left ventricular systolic pressure, and mitral mean diastolic gradient with A2-OS. There was no significant correlation of mitral valve area with A2-OS. When the left ventricular pressure was arbitrarily assigned to one particular pressure (100 mm. Hg) correlations with all other variables improved. There was still no correlation of A2-OS interval with mitral valve area. These and other haemodynamic factors influencing the A2-OS interval are briefly discussed.
D001794:Blood Pressure; D006325:Heart Atria; D006352:Heart Ventricles; D006439:Hemodynamics; D006801:Humans; D008943:Mitral Valve / Q000473:pathology; D008946:Mitral Valve Stenosis / Q000175:diagnosis / Q000503:physiopathology*; D010701:Phonocardiography