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