1. eMedicine - Anorexia Nervosa : Article by Tracy A Farkas, MD
Cardiovascular effects include mitral valve prolapse, supraventricular and ventricular dysrhythmias, long QT syndrome, bradycardia, orthostatic hypotension, and shock due to congestive heart failure. ECG is helpful in evaluating the severity of...
http://www.emedicine.com/emerg/topic34.htm

2. When Heartbeats Go Haywire: New Treatments Can Save Lives
The most common type of ventricular arrhythmia in both healthy and diseased individuals is the ventricular premature beat. Ventricular premature beats are not by themselves harmful, but they can be a precursor to two more serious types of...
http://www.fda.gov/fdac/features/1997/397_hart.html

3. Cardiac Dysrhythmias and Thyroid Dysfunction - The Hidden Menace? -- Osman et al. 87 (3): 963 -- ...
In contrast to supraventricular arrhythmias, ventricular arrhythmias. ) Ventricular tachycardia and ventricular fibrillation are exceptional. 1985 Beta-adrenoceptor density and relative number of beta-adrenoceptor subtypes in biopsies from human...
http://jcem.endojournals.org/cgi/content/full/87/3/963