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  • Title: [Left ventricular hemodynamics at rest and during exercise in patients with idiopathic mitral valve prolapse syndrome (author's transl)].
    Author: Markworth P, Hanrath P, Mathey D, Höhne A, Bleifeld W.
    Journal: Z Kardiol; 1980 Jan; 69(1):62-6. PubMed ID: 7415381.
    Abstract:
    Idiopathic Mitral Valve Prolapse has been regarded by some authors as a primary cardiomyopathy. To determine, if left ventricular hemodynamics at rest and during exercise are impaired, 20 young symptomatic patients with idiopathic mitral valve prolapse, proven by echo- and phonocardiography, without coronary artery disease or severe mitral regurgitation, underwent supine bicycle exercise stress testing. Pulmonary artery pressure, central venous oxygen saturation and cardiac index as well as heart rate were measured with a Swan-Ganz thermodilution catheter and the results compared with those of 10 voluntary normal subjects. Variance analysis showed no significant differences in global left ventricular hemodynamics between patients with idiopathic mitral valve prolapse and normal subjects at rest as well as during exercise. In addition no significant differences were found between patients with echocardiographical holosystolic or mesosystolic mitral valve prolapse. In patients with idiopathic mitral valve prolapse, global left ventricular hemodynamics are not impaired neither at rest nor during exercise.
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