Bradycardia causes: Difference between revisions
Ochuko Ajari (talk | contribs) No edit summary |
Ochuko Ajari (talk | contribs) No edit summary |
||
| Line 5: | Line 5: | ||
==Overview== | ==Overview== | ||
==Causes== | ==Causes== | ||
===Common Causes of Bradycardia=== | |||
Pathologic bradycardias are caused by disorders of impulse generation (impaired automaticity at [[SA node]]), impulse conduction ([[heart block]]) or [[escape pacemaker]]s and rhythms. Bradycardia can be underlain by several causes, which are best divided into cardiac and non-cardiac causes. Non-cardiac causes are usually secondary, and can involve recreational drug use, [[endocrine]] disorders ([[hypothyroid]]); [[electrolyte]] imbalance ([[hyperkalemia]]); autonomic reflexes; situational factors (prolonged [[bed rest]]); infections [[lyme disease]], medications, and [[autoimmune|autoimmunity]] disorders. Cardiac causes include acute or chronic [[ischemic heart disease]], vascular [[heart disease]], [[valvular heart disease]], or degenerative primary electrical disease (fibrosis and calcification of the [[sinus node]] and [[conduction system]]). | Pathologic bradycardias are caused by disorders of impulse generation (impaired automaticity at [[SA node]]), impulse conduction ([[heart block]]) or [[escape pacemaker]]s and rhythms. Bradycardia can be underlain by several causes, which are best divided into cardiac and non-cardiac causes. Non-cardiac causes are usually secondary, and can involve recreational drug use, [[endocrine]] disorders ([[hypothyroid]]); [[electrolyte]] imbalance ([[hyperkalemia]]); autonomic reflexes; situational factors (prolonged [[bed rest]]); infections [[lyme disease]], medications, and [[autoimmune|autoimmunity]] disorders. Cardiac causes include acute or chronic [[ischemic heart disease]], vascular [[heart disease]], [[valvular heart disease]], or degenerative primary electrical disease (fibrosis and calcification of the [[sinus node]] and [[conduction system]]). | ||
==Causes According to the Location of the Abnormality== | |||
===Atria=== | |||
====Respiratory Sinus arrhythmia==== | |||
====Sinus bradycardia==== | |||
====Low atrial focus bradycardia==== | |||
====First degreee AV block==== | |||
====Second degree AV block==== | |||
====Complete or third-degree AV block==== | |||
====Sick sinus syndrome==== | |||
===AV junction=== | |||
====Junctional escape rhythm==== | |||
===Ventricles=== | |||
====Isorhythmic A-V dissociation==== | |||
====Slow VT (idioventricular rhythm)==== | |||
====Ventricular escape rhythm==== | |||
===Causes of Bradycardia By Organ System=== | ===Causes of Bradycardia By Organ System=== | ||
Revision as of 15:09, 23 August 2013
|
Bradycardia Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Bradycardia causes On the Web |
|
American Roentgen Ray Society Images of Bradycardia causes |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: M.Umer Tariq [2]
Overview
Causes
Common Causes of Bradycardia
Pathologic bradycardias are caused by disorders of impulse generation (impaired automaticity at SA node), impulse conduction (heart block) or escape pacemakers and rhythms. Bradycardia can be underlain by several causes, which are best divided into cardiac and non-cardiac causes. Non-cardiac causes are usually secondary, and can involve recreational drug use, endocrine disorders (hypothyroid); electrolyte imbalance (hyperkalemia); autonomic reflexes; situational factors (prolonged bed rest); infections lyme disease, medications, and autoimmunity disorders. Cardiac causes include acute or chronic ischemic heart disease, vascular heart disease, valvular heart disease, or degenerative primary electrical disease (fibrosis and calcification of the sinus node and conduction system).
Causes According to the Location of the Abnormality
Atria
Respiratory Sinus arrhythmia
Sinus bradycardia
Low atrial focus bradycardia
First degreee AV block
Second degree AV block
Complete or third-degree AV block
Sick sinus syndrome
AV junction
Junctional escape rhythm
Ventricles
Isorhythmic A-V dissociation
Slow VT (idioventricular rhythm)
Ventricular escape rhythm
Causes of Bradycardia By Organ System
Causes in Alphabetical Order
References
- ↑ Pagon RA, Bird TD, Dolan CR; et al. PMID 20301600. Missing or empty
|title=(help) - ↑ Goldstein S, Qazi QH, Fitzgerald J, Goldstein J, Friedman AP, Sawyer P (1985). "Distichiasis, congenital heart defects and mixed peripheral vascular anomalies". Am. J. Med. Genet. 20 (2): 283–94. doi:10.1002/ajmg.1320200212. PMID 3976722. Unknown parameter
|month=ignored (help)