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The electrocardiogram (ECG, EKG) is used extensively in the diagnosis of heart disease, from congenital heart disease in infants to myocardial infarction and myocarditis in adults. Several different types of electrocardiogram exist.

Review Date: 6/3/2012
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.

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Anorexia nervosa
Aortic dissection
Aortic insufficiency
Aortic stenosis
Atrial fibrillation or flutter
Atrial septal defect (ASD)
Cardiac tamponade
Chest pain
Coarctation of the aorta
Coronary artery spasm
Delirium tremens
Digitalis toxicity
Dilated cardiomyopathy
Drug-induced lupus erythematosus
Ectopic heartbeat
Exercise stress test
Guillain-Barré Syndrome
Heart attack
Heart Failure Overview
Heart palpitations
High potassium level
Holter monitor (24h)
Hyperaldosteronism - primary and secondary
Hypertensive heart disease
Hypertrophic cardiomyopathy
Hypokalemic periodic paralysis
Mitral stenosis
Mitral valve prolapse
Mitral valve regurgitation
Multifocal atrial tachycardia
Obstructive sleep apnea
Paroxysmal supraventricular tachycardia (PSVT)
Patent ductus arteriosus
Pericarditis - after heart attack
Pericarditis - constrictive
Peripartum cardiomyopathy
Primary amyloidosis
Pulmonary embolus
Pulmonary hypertension
Pulmonary valve stenosis
Pulse - bounding
Restrictive cardiomyopathy
Sick sinus syndrome
Stable angina
Systemic lupus erythematosus
Tetralogy of Fallot
Thyrotoxic periodic paralysis
Transient ischemic attack
Transposition of the great vessels
Tricuspid regurgitation
Type 2 Diabetes
Unstable angina
Ventricular septal defect
Ventricular tachycardia
Wolff-Parkinson-White syndrome


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