Radionuclide angiocardiographic analysis of myocardial function in myotonic muscular dystrophy.
Using radionuclide angiocardiography, we studied cardiac function in 10 men with myotonic muscular dystrophy who had no cardiac symptoms and were less than 50 years of age, comparing resting and exercise performance of the heart. Nine of 10 patients had an abnormality of myocardial function. The interaction of exercise-induced cardiomyopathy with conduction system abnormalities may be important in sudden cardiac dysfunction in patients with myotonic dystrophy.
D000328:Adult; D000792:Angiography / Q000379:methods*; D004562:Electrocardiography; D006321:Heart / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D009223:Myotonic Dystrophy / Q000000981:diagnostic imaging* / Q000503:physiopathology; D011877:Radionuclide Imaging; D013318:Stroke Volume