First degree AV block causes: Difference between revisions
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===Life Threatening Causes=== | ===Life Threatening Causes=== | ||
Life-threatening conditions can result in death or permanent disability within 24 hours if left untreated. | Life-threatening conditions can result in death or permanent disability within 24 hours if left untreated. | ||
* [[ | * [[Myocarditis]] | ||
* acute [[myocardial infarction]] | * acute [[myocardial infarction]] | ||
* [[bacterial endocarditis]] | * [[bacterial endocarditis]] |
Revision as of 17:12, 21 August 2013
First degree AV block Microchapters |
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Case Studies |
First degree AV block causes On the Web |
American Roentgen Ray Society Images of First degree AV block causes |
Risk calculators and risk factors for First degree AV block causes |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]; Raviteja Guddeti, M.B.B.S. [3] Synonyms and keywords:
Overview
Causes
Life Threatening Causes
Life-threatening conditions can result in death or permanent disability within 24 hours if left untreated.
Common Causes
Enhanced vagal tone in athletes
electrolyte disturbances drugs; calcium channel blockers, beta-blockers, digitalis,cardiac glycosides, cholinesterase inhibitors, ** Quinidine and Procainamide may produce slight prolongation of the PR,
- Normal variants of PR prolongation
- Vagal maneuvers
- Acute MI - esp [[inferior MI)
- Degenerative diseases
- Idiopathic bilateral bundle branch fibrosis and the heart block is called primary heart block
- Hypertension
- Chronic AV block in patients with HTN is thought to be due to CAD or sclerosis of the left side of the cardiac skeleton exacerbated by
- hypertension
- Acute rheumatic fever
- Dilated cardiomyopathy
- HCM: 3% of patients with HCM will develop heart block
- Myocarditis
- SLE
- Tumors, primary and secondary
- Valvular Heart Disease
- Calcific aortic stenosis
- Rheumatic mitral valve disease
- May also be seen in bacterial endocarditis, especially of the aortic valve
- Ebstein's anomaly
transposition of the great vessels, ASDs and Ebstein's anomaly VSD,
tetralogy of Fallot endocardial cushion defect.
Causes by Organ System
Cardiovascular | AV nodal disease, Myocarditis, Acute myocardial infarction (especially acute inferior MI), Hypertension, Acute rheumatic fever, Dilated cardiomyopathy, HCM, Myocarditis, Valvular heart disease, Transposition of the great vessels, ASDs, Ebstein's anomaly, VSD, Tetralogy of Fallot, Endocardial cushion defect, Lev's disease |
Chemical / poisoning | No underlying causes |
Dermatologic | No underlying causes |
Drug Side Effect | Calcium channel blockers, Beta-blockers, Digitalis, Cardiac glycosides, Cholinesterase inhibitors, Quinidine, Procainamide, Disopyramide, Flecainide, Encainide, Propafenone, Amiodarone, Sotalol, Dofetilide, Ibutilide, Magnesium |
Ear Nose Throat | No underlying causes |
Endocrine | No underlying causes |
Environmental | No underlying causes |
Gastroenterologic | Hemochromatosis |
Genetic | No underlying causes |
Hematologic | No underlying causes |
Iatrogenic | No underlying causes |
Infectious Disease | Acute rheumatic fever, Chagas disease, Diphtheria, Lyme disease, Myocarditis, Tuberculosis |
Musculoskeletal / Ortho | Ankylosing spondylitis, Muscular dystrophy |
Neurologic | No underlying causes |
Nutritional / Metabolic | No underlying causes |
Obstetric/Gynecologic | No underlying causes |
Oncologic | No underlying causes |
Opthalmologic | No underlying causes |
Overdose / Toxicity | No underlying causes |
Psychiatric | No underlying causes |
Pulmonary | Sarcoidosis |
Renal / Electrolyte | No underlying causes |
Rheum / Immune / Allergy | Ankylosing spondylitis, Dermatomyositis, Scleroderma, SLE, Rheumatoid arthritis |
Sexual | No underlying causes |
Trauma | No underlying causes |
Urologic | No underlying causes |
Dental | No underlying causes |
Miscellaneous | Amyloidosis, Enhanced vagal tone (for example in athletes), Normal variants |
Causes in Alphabetical Order
- Acute myocardial infarction (especially acute inferior MI)
- Acute rheumatic fever
- Amiodarone
- Amyloidosis
- Ankylosing spondylitis
- ASD
- AV nodal disease
- Beta-blockers
- Calcium channel blockers
- Cardiac glycosides
- Chagas disease
- Cholinesterase inhibitors
- Dermatomyositis
- Digitalis
- Dilated cardiomyopathy
- Diphtheria
- Disopyramide
- Dofetilide
- Ebstein's anomaly
- Encainide
- Endocardial cushion defect
- Enhanced vagal tone (for example in athletes)
- Flecainide
- HCM
- Hemochromatosis
- Hypertension
- Ibutilide
- Lev's disease
- Lenègre-Lev disease
- Lyme disease
- Magnesium
- Muscular dystrophy
- Myocarditis
- Normal variants
- Procainamide
- Propafenone
- Quinidine
- Rheumatoid arthritis
- Sarcoidosis
- Scleroderma
- SLE
- Sotalol
- Tetralogy of Fallot
- Transposition of the great vessels
- Tuberculosis
- Valvular heart disease
- VSD