First degree AV block causes: Difference between revisions
Rim Halaby (talk | contribs) |
Rim Halaby (talk | contribs) |
||
| Line 74: | Line 74: | ||
|-bgcolor="LightSteelBlue" | |-bgcolor="LightSteelBlue" | ||
| '''Musculoskeletal / Ortho''' | | '''Musculoskeletal / Ortho''' | ||
|bgcolor="Beige"| [[Ankylosing spondylitis]], [[Neuromuscular disease|hereditary neuromuscular disease]], [[Kearns-Sayre syndrome]], [[mitochondrial | |bgcolor="Beige"| [[Ankylosing spondylitis]], [[Neuromuscular disease|hereditary neuromuscular disease]], [[Kearns-Sayre syndrome]], [[mitochondrial disease|mitochondrial genome inherited conditions]], [[muscular dystrophy]] | ||
|- | |- | ||
|-bgcolor="LightSteelBlue" | |-bgcolor="LightSteelBlue" | ||
| Line 134: | Line 134: | ||
|-bgcolor="LightSteelBlue" | |-bgcolor="LightSteelBlue" | ||
| '''Miscellaneous''' | | '''Miscellaneous''' | ||
|bgcolor="Beige"| [[Amyloidosis]], [[degenerative diseases]], [[vagus nerve| | |bgcolor="Beige"| [[Amyloidosis]], [[degenerative diseases]], [[vagus nerve|enhanced vagal tone]], [[PR interval|normal variants]], [[pain]], [[sleep]], [[trauma]] | ||
|- | |- | ||
|} | |} | ||
Revision as of 02:47, 4 September 2013
|
First degree AV block Microchapters |
|
Diagnosis |
|---|
|
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 the ventricles of the heart.[1] It usually involves the atrioventricular node, but it can involve other structures too. AV block is categorized according to the degree and the 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 causes include conditions which may 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
|
|
|
|