Pre-excitation syndrome

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Pre-excitation syndrome Classification and external resources
ICD-10	I45.6
ICD-9	426.7, 426.81
DiseasesDB	32903
MeSH	D011226

WikiDoc Resources for Pre-excitation syndrome
Articles
Most recent articles on Pre-excitation syndrome Most cited articles on Pre-excitation syndrome Review articles on Pre-excitation syndrome Articles on Pre-excitation syndrome in N Eng J Med, Lancet, BMJ
Media
Powerpoint slides on Pre-excitation syndrome Images of Pre-excitation syndrome Photos of Pre-excitation syndrome Podcasts & MP3s on Pre-excitation syndrome Videos on Pre-excitation syndrome
Evidence Based Medicine
Cochrane Collaboration on Pre-excitation syndrome Bandolier on Pre-excitation syndrome TRIP on Pre-excitation syndrome
Clinical Trials
Ongoing Trials on Pre-excitation syndrome at Clinical Trials.gov Trial results on Pre-excitation syndrome Clinical Trials on Pre-excitation syndrome at Google
Guidelines / Policies / Govt
US National Guidelines Clearinghouse on Pre-excitation syndrome NICE Guidance on Pre-excitation syndrome NHS PRODIGY Guidance FDA on Pre-excitation syndrome CDC on Pre-excitation syndrome
Books
Books on Pre-excitation syndrome
News
Pre-excitation syndrome in the news Be alerted to news on Pre-excitation syndrome News trends on Pre-excitation syndrome
Commentary
Blogs on Pre-excitation syndrome
Definitions
Definitions of Pre-excitation syndrome
Patient Resources / Community
Patient resources on Pre-excitation syndrome Discussion groups on Pre-excitation syndrome Patient Handouts on Pre-excitation syndrome Directions to Hospitals Treating Pre-excitation syndrome Risk calculators and risk factors for Pre-excitation syndrome
Healthcare Provider Resources
Symptoms of Pre-excitation syndrome Causes & Risk Factors for Pre-excitation syndrome Diagnostic studies for Pre-excitation syndrome Treatment of Pre-excitation syndrome
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CME Programs on Pre-excitation syndrome
International
Pre-excitation syndrome en Espanol Pre-excitation syndrome en Francais
Businness
Pre-excitation syndrome in the Marketplace Patents on Pre-excitation syndrome
Experimental / Informatics
List of terms related to Pre-excitation syndrome

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Pre-excitation syndrome is a condition where the the ventricles of the heart become depolarized too early, which leads to their partially premature contraction. Normally, the atria (chambers taking venous blood) and the ventriculi (chambers propulsing blood towards organs) are electrically isolated, and only electrical passage exists at "atrioventricular node". In all pre-excitation syndromes, there is at least one more conductive pathway is present. Physiologically, the electrical depolarization wave 'waits' in atrioventricular node to allow atria contract before ventriculi. However, there is no such property exists in abnormal pathway, so electrical stimulus passes to ventricule by this tracts far before normal atrioventricular-his system, and ventricules are depolarized (excitated) before (pre-) normal conduction system. The term pre-excitation derives from this condition.

It is usually caused by a secondary conduction pathway (other than the bundle of His):

Type	Conduction pathway	PR interval	QRS interval	Delta wave?
Wolff-Parkinson-White syndrome	Bundle of Kent (atria to ventricles)	short	long	yes
Lown-Ganong-Levine syndrome	"James bundle" (atria to bundle of His)	short	normal	no
Mahaim-type	Mahaim fibers	normal	long	yes

See also

• Electrical conduction system of the heart

v • d • e Circulatory system pathology (I, 390-459)
Hypertension	Hypertensive heart disease - Hypertensive nephropathy - Secondary hypertension (Renovascular hypertension)
Ischaemic heart disease	Angina pectoris (Prinzmetal's angina) - Myocardial infarction (heart attack) - Dressler's syndrome
Pulmonary circulation	Pulmonary embolism - Cor pulmonale
Pericardium	Pericarditis - Pericardial effusion - Cardiac tamponade
Endocardium/heart valves	Endocarditis - mitral valve (regurgitation, prolapse, stenosis) - aortic valve (stenosis, insufficiency) - pulmonary valve (stenosis, insufficiency) - tricuspid valve (stenosis, insufficiency)
Myocardium	Myocarditis - Cardiomyopathy (Dilated cardiomyopathy, Hypertrophic cardiomyopathy, Loeffler endocarditis, Restrictive cardiomyopathy) - Arrhythmogenic right ventricular dysplasia
Electrical conduction system of the heart	Heart block: AV block (First degree, Second degree, Third degree) - Bundle branch block (Left, Right) - Bifascicular block - Trifascicular block Pre-excitation syndrome (Wolff-Parkinson-White, Lown-Ganong-Levine) - Long QT syndrome - Adams-Stokes syndrome - Cardiac arrest - Sudden cardiac death Arrhythmia: Paroxysmal tachycardia (Supraventricular, AV nodal reentrant, Ventricular) - Atrial flutter - Atrial fibrillation (Familial) - Ventricular fibrillation - Premature contraction (Atrial, Ventricular) - Ectopic pacemaker - Sick sinus syndrome
Other heart conditions	Heart failure - Cardiovascular disease - Cardiomegaly - Ventricular hypertrophy (Left, Right)
Cerebrovascular diseases	Stroke - Transient ischemic attack - Intracranial hemorrhage/cerebral hemorrhage: Extra-axial hemorrhage (Epidural hemorrhage, Subdural hemorrhage, Subarachnoid hemorrhage) Intra-axial hematoma (Intraventricular hemorrhages, Intraparenchymal hemorrhage) - Anterior spinal artery syndrome - Binswanger's disease - Moyamoya disease
Arteries, arterioles and capillaries	Atherosclerosis (Renal artery stenosis) - Aortic dissection/Aortic aneurysm (Abdominal aortic aneurysm) - Aneurysm - Raynaud's phenomenon/Raynaud's disease - Buerger's disease - Vasculitis/Arteritis (Aortitis) - Intermittent claudication - Arteriovenous fistula - Hereditary hemorrhagic telangiectasia - Spider angioma - Dissection (Carotid artery, Vertebral artery)
Veins, lymphatic vessels and lymph nodes	Thrombosis/Phlebitis/Thrombophlebitis (Deep vein thrombosis, May-Thurner syndrome, Portal vein thrombosis, Venous thrombosis, Budd-Chiari syndrome, Renal vein thrombosis, Paget-Schroetter disease) - Varicose veins / Portacaval anastomosis (Hemorrhoid, Esophageal varices, Varicocele, Gastric varices, Caput medusae) - Superior vena cava syndrome - Lymph (Lymphadenitis, Lymphedema, Lymphangitis)
Other	Hypotension (Orthostatic hypotension) - Rheumatic fever
See also congenital (Q20-Q28, 745-747)

v • d • e Electrocardiography
Overview	History of the EKG • EKG interpretation basics • Normal sinus rhythm
EKG Complexes	P wave • QRS complex • ST Segment • T wave • U wave Osborn wave • H wave • K wave • Delta wave NSSTW changes
EKG Intervals	PR Interval • QRS Interval • ST Interval • QT Interval
Conduction System & Bradycardia	Cardiac pacemaker • SA node • AV node• Bundle of His • Purkinje fibers • Sinus bradycardia • First Degree AV Block • Second Degree AV Block • Complete or Third-Degree AV Block • Concealed conduction • AV Junctional Rhythms • LBBB • LAHB • LPHB • RBBB • Trifascicular block
Atrial Arrhythmias	Sinus tachycardia • Premature Atrial Contractions (PACs) • Ectopic Atrial Rhythm • Paroxysmal Atrial Tachycardia (PAT) • Paroxysmal Atrial Tachycardia (PAT) with Block • Multifocal Atrial Tachycardia (MAT) • Atrial Flutter • Atrial Fibrillation • Wandering atrial pacemaker
Ventricular Arrhythmias	Differential Diagnosis of Tachycardia with a Wide QRS Complex • Accelerated Idioventricular Rhythm • Ventricular Parasystole • Premature Ventricular Contractions (PVCs) • Ventricular tachycardia • Ventricular Fibrillation • Sudden cardiac death
EKG Abnormalities in Disease States	Hypertrophy & Dilatation • Right atrial enlargement • Left atrial enlargement • Biatrial enlargement • Left Ventricular Hypertrophy • Right Ventricular Hypertrophy • Biventricular Hypertrophy • Acute myocardial infarction • NSTEMI • STEMI • Right ventricular myocardial infarction • Atrial infarction Pre-excitation Syndromes • Wolff-Parkinson-White Syndrome • Lown Ganong Levine Syndrome • Mahaim Type Preexcitation Cardiomyopathies • Arrhythmogenic Right Ventricular Dysplasia • Dilated Cardiomyopathy • Hypertrophic Cardiomyopathy Drug Effects on the EKG • Adenosine • β-blockers • Digitalis • Quinidine • Procainamide • Disopyramide • Lidocaine • Tocainide and Mexiletine • Phenytoin • Encainide, Flecainide and Propafenone • Amiodarone • Bretylium • Ca Channel Blockers • Phenothiazines • Tricyclic Antidepressants • Lithium Congenital Heart Disease • Dextrocardia • Atrial Septal Defect • Ventricular Septal Defect • Tetralogy of Fallot • Conjoined Twins or Siamese Twins Electrolyte Disturbances • Hyperkalemia • Hypokalemia • Hypercalcemia • Hypocalcemia • Nonspecific Changes Other Heart Diseases • Pericarditis • Myocarditis • Tamponade • Heart Transplantation • Sick Sinus Syndrome • Long QT Syndrome Inherited Disease • Brugada Syndrome Systemic Diseases • CNS Disease • Cardiac Tumors Heart Transplantation • EKG Changes in patient with Heart Transplantation Exogenous Effects • Hypothermia • Chest Trauma • Insect Bites • Electric Injuries
Technical Issues and Potential Errors in Interpretation	Artifacts • Lead Placement Errors • The EKG in a Patient with a Pacemaker

v • d • e WikiDoc Research Resources for Pre-excitation syndrome
Articles on Pre-excitation syndrome	Most recent articles on Pre-excitation syndrome • Most cited articles on Pre-excitation syndrome • Review articles on Pre-excitation syndrome • Articles on Pre-excitation syndrome in N Eng J Med, Lancet, BMJ
Media (Slides, Video, Images, MP3) on Pre-excitation syndrome	Powerpoint slides on Pre-excitation syndrome • Images of Pre-excitation syndrome • Photos of Pre-excitation syndrome • Podcasts & MP3s on Pre-excitation syndrome • Videos on Pre-excitation syndrome
Evidence Based Medicine Regarding Pre-excitation syndrome	Cochrane Collaboration on Pre-excitation syndrome • Bandolier on Pre-excitation syndrome • TRIP on Pre-excitation syndrome
Cost Effectiveness of Pre-excitation syndrome	Cost Effectiveness of Pre-excitation syndrome
Clinical Trials Involving Pre-excitation syndrome	Ongoing Trials on Pre-excitation syndrome at Clinical Trials.gov • Trial results on Pre-excitation syndrome • Clinical Trials on Pre-excitation syndrome at Google
Guidelines / Policies / Government Resources (FDA/CDC) Regarding Pre-excitation syndrome	US National Guidelines Clearinghouse on Pre-excitation syndrome • NICE Guidance on Pre-excitation syndrome • NHS PRODIGY Guidance • FDA on Pre-excitation syndrome • CDC on Pre-excitation syndrome
Textbook Information on Pre-excitation syndrome	Books and Textbook Information on Pre-excitation syndrome
Pharmacology Resources on Pre-excitation syndrome	Dosing of Pre-excitation syndrome • Drug interactions with Pre-excitation syndrome • Side effects of Pre-excitation syndrome • Allergic reactions to Pre-excitation syndrome • Overdose information on Pre-excitation syndrome • Carcinogenicity information on Pre-excitation syndrome • Pre-excitation syndrome in pregnancy • Pharmacokinetics of Pre-excitation syndrome •
Genetics, Pharmacogenomics, and Proteinomics of Pre-excitation syndrome	Genetics of Pre-excitation syndrome • Pharmacogenomics of Pre-excitation syndrome • Proteomics of Pre-excitation syndrome
Newstories on Pre-excitation syndrome	Pre-excitation syndrome in the news • Be alerted to news on Pre-excitation syndrome • News trends on Pre-excitation syndrome
Commentary on Pre-excitation syndrome	Blogs on Pre-excitation syndrome
Patient Resources on Pre-excitation syndrome	Patient resources on Pre-excitation syndrome • Discussion groups on Pre-excitation syndrome • Patient Handouts on Pre-excitation syndrome • Directions to Hospitals Treating Pre-excitation syndrome • Risk calculators and risk factors for Pre-excitation syndrome
Healthcare Provider Resources on Pre-excitation syndrome	Symptoms of Pre-excitation syndrome • Causes & Risk Factors for Pre-excitation syndrome • Diagnostic studies for Pre-excitation syndrome • Treatment of Pre-excitation syndrome
Continuing Medical Education (CME) Programs on Pre-excitation syndrome	CME Programs on Pre-excitation syndrome
International Resources on Pre-excitation syndrome	Pre-excitation syndrome en Espanol • Pre-excitation syndrome en Francais
Business Resources on Pre-excitation syndrome	Pre-excitation syndrome in the Marketplace • Patents on Pre-excitation syndrome
Informatics Resources on Pre-excitation syndrome	List of terms related to Pre-excitation syndrome

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