Isorhythmic A-V dissociation: Difference between revisions
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{|style="width:80%; height:100px" border="1" | {|style="width:80%; height:100px" border="1" | ||
|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 coronary syndrome]], [[acute rheumatic fever]], [[amyloidosis]], [[Andersen cardiodysrhythmic periodic paralysis]], [[Brugada syndrome]], [[cardiac lymphoma]], [[cardiac transplantation]], [[cardioinhibitory syncope]], [[complete heart block]], [[congenital heart disease]], [[congestive heart failure]], [[coronary reperfusion therapy]], [[dilated cardiomyopathy]], [[hypertensive heart disease]], [[hypertrophic cardiomyopathy]], [[ischemic heart disease]], [[Jervell and Lange-Nielsen syndrome]], [[Lev's disease]], [[long QT syndrome]], [[myocardial bridging]], [[myocardial contusion]], [[myocardial infarction]], [[myocardial rupture]], [[myocarditis]], [[NSTEMI]], [[pericarditis]], [[Romano-Ward syndrome]], [[sick sinus syndrome]], [[sinoatrial block]], [[sinus arrest]], [[sinus bradycardia]], [[sinus node fibrosis]], [[STEMI]], [[tachycardia-bradycardia syndrome]], [[Timothy syndrome]], [[valvular heart disease]] | |style="height:100px"; style="width:75%" border="1" bgcolor="Beige" | [[Acute coronary syndrome]], [[acute rheumatic fever]], [[amyloidosis]], [[Andersen cardiodysrhythmic periodic paralysis]], [[Brugada syndrome]], [[cardiac tumor#heart in lymphomas|cardiac lymphoma]], [[cardiac transplantation]], [[Carotid sinus hypersensitivity|cardioinhibitory syncope]], [[complete heart block]], [[congenital heart disease]], [[congestive heart failure]], [[reperfusion injury|coronary reperfusion therapy]], [[dilated cardiomyopathy]], [[hypertensive heart disease]], [[hypertrophic cardiomyopathy]], [[ischemic heart disease]], [[Jervell and Lange-Nielsen syndrome]], [[Lev's disease]], [[long QT syndrome]], [[myocardial bridging]], [[myocardial contusion]], [[myocardial infarction]], [[myocardial rupture]], [[myocarditis]], [[NSTEMI]], [[pericarditis]], [[Romano-Ward syndrome]], [[sick sinus syndrome]], [[sinoatrial block]], [[sinus arrest]], [[sinus bradycardia]], [[sinus node fibrosis]], [[STEMI]], [[tachycardia-bradycardia syndrome]], [[Timothy syndrome]], [[valvular heart disease]] | ||
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| '''Chemical/Poisoning''' | | '''Chemical/Poisoning''' | ||
|bgcolor="Beige"| [[Berberine]], [[carbamate poisoning]], [[grayanotoxin]], [[ | |bgcolor="Beige"| [[Berberine]], [[carbamate poisoning]], [[grayanotoxin]], [[organophosphate|organophosphate poisoning]], [[parathion poisoning]], [[poisonous spider bites]], [[pyrethroid poisoning]], [[scorpion toxin]] | ||
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| '''Oncologic''' | | '''Oncologic''' | ||
|bgcolor="Beige"| [[ | |bgcolor="Beige"| [[cardiac tumor#heart in lymphomas|cardiac lymphoma]] | ||
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*[[Carbamazepine]] | *[[Carbamazepine]] | ||
*[[Cardiac catheterization]] | *[[Cardiac catheterization]] | ||
*[[Cardiac lymphoma]] | *[[cardiac tumor#heart in lymphomas|Cardiac lymphoma]] | ||
*[[Cardiac resynchronization therapy]] | *[[Cardiac resynchronization therapy]] | ||
*[[Cardiac transplantation]] | *[[Cardiac transplantation]] | ||
*[[Cardioinhibitory syncope]] | *[[Carotid sinus hypersensitivity|Cardioinhibitory syncope]] | ||
*[[Chagas disease]] | *[[Chagas disease]] | ||
*[[Cholinesterase inhibitors]] | *[[Cholinesterase inhibitors]] | ||
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*[[Congestive heart failure]] | *[[Congestive heart failure]] | ||
*[[Coronary artery bypass grafting]] | *[[Coronary artery bypass grafting]] | ||
*[[Coronary reperfusion therapy]] | *[[reperfusion injury|Coronary reperfusion therapy]] | ||
*[[Daunorubicin]] | *[[Daunorubicin]] | ||
*[[Diabetic ketoacidosis]] | *[[Diabetic ketoacidosis]] | ||
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{{col-break|width=33%}} | {{col-break|width=33%}} | ||
*[[NSTEMI]] | *[[NSTEMI]] | ||
*[[ | *[[organophosphate|organophosphate poisoning]] | ||
*[[Parathion poisoning]] | *[[Parathion poisoning]] | ||
*[[Pericarditis]] | *[[Pericarditis]] | ||
Revision as of 21:19, 3 September 2013
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vendhan Ramanujam M.B.B.S [2]
Synonyms and keywords: Isorhythmic AV dissociation
Overview
Isorhythmic AV dissociation is a AV dissociation initiated by slowing of SA node due to sinus arrhythmia, sinus bradycardia, sinus arrest, or sinoatrial block. This allows an independent ventricular pacemaker response like either junctional rhythm (giving a normal or near normal QRS appearance and duration) or idioventricular rhythm (with a more bizarre, wide QRS) to take over the ventricles. In the presence of some degree of antegrade and retrograde atrioventricular block, there is a synchronization of independently beating sinus or atrial pacemaker with the junctional or ventricular pacemaker such that each discharges in the absolute refractory period of the other.
Causes
Life Threatening Causes
Life-threatening causes include conditions which may result in death or permanent disability within 24 hours if left untreated.
- Acute coronary syndrome
- Diabetic ketoacidosis
- Myocardial rupture
- NSTEMI
- Organophosphate poisoning
- STEMI
Common Causes
- Acetylcholine
- Acute coronary syndrome
- Acute rheumatic fever
- Amiodarone
- Antiarrhythmic agents
- Beta-blockers
- Calcium channel blockers
- Cardiac catheterization
- Cardiomyopathy
- Congestive heart failure
- Digitalis toxicity
- Diltiazem
- Hypertensive heart disease
- Ischemic heart disease
- Myocarditis
- Sick sinus syndrome
- Sinus arrest
- Sinus bradycardia
- STEMI