title: Echocardiographic evaluation of propranolol therapy for mitral valve prolapse.
abstract: This study evaluates the effect of propranolol on the echocardiogram of 8 patients with late systolic mitral value prolapse. Echocardiograms were performed with the patients on no medication and again while on oral propranolol therapy. Propranolol caused a statistically significant increase in left ventricular volume; however, neither the echocardiographic pattern nor the timing of mitral valve prolapse was altered by propranolol. These findings suggest that factors in addition to left ventricular volume play a role in regulating valvular dysfunction in this condition.
mesh_terms: D002306:Cardiac Volume; D003864:Depression, Chemical; D004452:Echocardiography; D005260:Female; D006339:Heart Rate / Q000187:drug effects; D006352:Heart Ventricles / Q000187:drug effects / Q000503:physiopathology; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000188:drug therapy* / Q000503:physiopathology; D011433:Propranolol / Q000494:pharmacology / Q000627:therapeutic use*
chemical_list: D011433:Propranolol