First degree AV block causes: Difference between revisions
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|style="height:100px"; style="width:25%" border="1" bgcolor="LightSteelBlue" | '''Cardiovascular''' | |style="height:100px"; style="width:25%" border="1" bgcolor="LightSteelBlue" | '''Cardiovascular''' | ||
|style="height:100px"; style="width:75%" border="1" bgcolor="Beige" |[[Acute myocardial infarction]], [[acute rheumatic fever]], [[ASD]], [[dilated cardiomyopathy]], [[Ebstein's anomaly]], [[Carotid sinus hypersensitivity|hypersensitive carotid sinus syndrome]], [[hypertension]], [[hypertrophic cardiomyopathy]], [[Lev's disease]], [[myocardial bridging]], [[myocarditis]], [[Aortic valve replacement|post aortic valve replacement]], [[catheter ablation|post catheter ablation for arrhythmias]], [[ventricular septal defect surgery|post closure of a ventricular septal defect]], [[mitral valve replacement|post mitral valve replacement]], [[tetralogy of Fallot]], [[endocardial cushion defect]], [[transposition of the great vessels]], [[valvular heart disease]], [[VSD]] | |style="height:100px"; style="width:75%" border="1" bgcolor="Beige" |[[Acute myocardial infarction]], [[acute rheumatic fever]], [[ASD]], [[dilated cardiomyopathy]], [[Ebstein's anomaly]], [[Carotid sinus hypersensitivity|hypersensitive carotid sinus syndrome]], [[hypertension]], [[hypertrophic cardiomyopathy]], idiopathic bilateral bundle branch fibrosis, idiopathic progressive cardiac conduction disease, [[Lev's disease]], [[myocardial bridging]], [[myocarditis]], [[Aortic valve replacement|post aortic valve replacement]], [[catheter ablation|post catheter ablation for arrhythmias]], [[ventricular septal defect surgery|post closure of a ventricular septal defect]], [[mitral valve replacement|post mitral valve replacement]], [[tetralogy of Fallot]], [[endocardial cushion defect]], [[transposition of the great vessels]], [[valvular heart disease]], [[VSD]] | ||
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| '''Genetic''' | | '''Genetic''' | ||
|bgcolor="Beige"| [[Emery-Dreifuss muscular dystrophy]], [[Fabry disease]], [[glycogenosis type 2b]], | |bgcolor="Beige"| [[Emery-Dreifuss muscular dystrophy]], [[Fabry disease]], [[glycogenosis type 2b]], hereditary neuromuscular neurodegenerative disease, [[Kearns-Sayre syndrome]] | ||
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| '''Infectious Disease''' | | '''Infectious Disease''' | ||
|bgcolor="Beige"| [[Acute rheumatic fever]], [[Chagas disease]], [[diphtheria]], [[Lyme disease]], [[myocarditis]], | |bgcolor="Beige"| [[Acute rheumatic fever]], [[Chagas disease]], [[diphtheria]], [[Lyme disease]], [[myocarditis]], neonatal lupus syndrome, [[protozoa|protozoal infection]], [[sarcoidosis]], [[SLE]], [[tuberculosis]] | ||
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|-bgcolor="LightSteelBlue" | |-bgcolor="LightSteelBlue" | ||
| '''Musculoskeletal / Ortho''' | | '''Musculoskeletal / Ortho''' | ||
|bgcolor="Beige"| [[Ankylosing spondylitis]], | |bgcolor="Beige"| [[Ankylosing spondylitis]], hereditary neuromuscular heredodegenerative disease, [[Kearns-Sayre syndrome]], [[mitochondrial DNA|mitochondrial genome inherited conditions]], [[muscular dystrophy]] | ||
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| '''Miscellaneous''' | | '''Miscellaneous''' | ||
|bgcolor="Beige"| [[Amyloidosis]], [[degenerative diseases]], | |bgcolor="Beige"| [[Amyloidosis]], [[degenerative diseases]], enhanced [[vagus nerve|vagal tone]] (for example in athletes), normal variants, [[pain]], [[sleep ]], [[trauma]] | ||
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Revision as of 13:41, 24 August 2013
First degree AV block Microchapters |
Diagnosis |
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Treatment |
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]
Overview
An atrioventricular block (or AV block) is a type of heart block involving an impairment of the conduction between the atria and ventricles of the heart.[1] It usually involves the atrioventricular node, but it can involve other structures too. AV block is categorized by degree and site of conduction block. In first-degree AV block, all atrial impulses are conducted to the ventricles; however, there is a delay in conduction within the AV node resulting in a prolonged PR interval on ECG (>200 msec or >5 small blocks). In other words, first degree block is a slowed conduction without loss of atrioventricular synchrony.
Causes
Life Threatening Causes
Life-threatening conditions can result in death or permanent disability within 24 hours if left untreated.
Common Causes
- Hyperkalemia
- Hyperthyroidism
- Increased vagal tone (e.g. sleep, athletes)
- Ischemic heart disease
- Medications ( e.g. adenosine, amiodarone, beta-blockers, diltiazem, procainamide, verapamil)
Causes by Organ System
Causes in Alphabetical Order
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