twenty-four patients with myotonic dystrophy ( myd ) , age 19-66 years , underwent non-invasive cardiac evaluation which included physical examination , resting and 24 h ecg recording , echocardiography , and multigated radionuclide ( tc99 ) scanning ( muga ) to assess left ventricular ejection fraction ( lvef ) .
C0220825
evaluation
C0031809
physical examination