Paroxysmal Atrial Tachycardia (PAT) with Block: Difference between revisions
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==Diagnosis== | |||
===Electrocardiographic Findings=== | |||
# The [[P wave]] morphology is different than that of a [[normal sinus rhythm]] (NSR). | |||
# The atrial rate is between 150 and 250 beats per minute (BPM). | |||
#* It is less than 200 in most cases. | |||
#* In [[atrial flutter]] the rate is > 250 BPM in most cases. | |||
# There is an isoelectric baseline between P waves in all leads. | |||
#* In [[atrial flutter]] there is a sawtooth appearance to the [[P wave]]s. | |||
# [[AV block]] | |||
#* Usually 2:1, but can be 3:1, and can even be variable and resemble [[atrial fibrillation]]. | |||
# [[Digoxin toxicity]] caused 73% of cases in the Lown series. Other reports put the number at 40 to 82%. | |||
==Related Chapters== | |||
* [[Atrial flutter]] | |||
* [[Atrial tachycardia]] | |||
* [[Atrial fibrillation]] | |||
* [[Multifocal atrial tachycardia]] | |||
== | ==References== | ||
{{reflist|2}} | |||
{{Electrocardiography}} | {{Electrocardiography}} | ||
[[Category:Electrophysiology]] | [[Category:Electrophysiology]] | ||
[[Category:Emergency medicine]] | [[Category:Emergency medicine]] | ||
[[Category:Needs content]] | |||
[[Category:Cardiology]] | |||
[[Category:Arrhythmia]] | |||
{{WikiDoc Help Menu}} | {{WikiDoc Help Menu}} | ||
{{WikiDoc Sources}} | {{WikiDoc Sources}} |
Latest revision as of 21:22, 20 August 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Diagnosis
Electrocardiographic Findings
- The P wave morphology is different than that of a normal sinus rhythm (NSR).
- The atrial rate is between 150 and 250 beats per minute (BPM).
- It is less than 200 in most cases.
- In atrial flutter the rate is > 250 BPM in most cases.
- There is an isoelectric baseline between P waves in all leads.
- In atrial flutter there is a sawtooth appearance to the P waves.
- AV block
- Usually 2:1, but can be 3:1, and can even be variable and resemble atrial fibrillation.
- Digoxin toxicity caused 73% of cases in the Lown series. Other reports put the number at 40 to 82%.