Right atrial enlargement: Difference between revisions
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Shown below is the chest x-ray of a patient with Ebstein's anomaly in whom the right atrium is markedly enlarged. | {{Infobox_Disease | | ||
Name = {{PAGENAME}} | | |||
Image = RAE.png| | |||
Caption = | | |||
Width = 200px | | |||
DiseasesDB = | | |||
ICD10 = | | |||
ICD9 = | | |||
ICDO = | | |||
OMIM = | | |||
MedlinePlus = | | |||
eMedicineSubj = | | |||
eMedicineTopic = | | |||
MeshName = Right+Atrial+Enlargement | | |||
MeshNumber = | | |||
}} | |||
{{SI}} | |||
{{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}} | |||
{{SK}} Himalayan P waves, Himalayan P-wave, giant P waves, P pulmonale, right atrial abnormality, RAE | |||
==Overview== | |||
[[Right atrial enlargement]] can result from increased pressure in the [[pulmonary artery]]. A [[P wave]] >2.5 mm in leads II, III and aVF | |||
or a [[P wave]] >1.5 mm in lead V1 indicates right atrial enlargement. Despite the increase in the height of the [[P wave]], the width of the [[P wave]] does not change. Sometimes these large [[P waves]] can be referred to as Himalayan P waves. | |||
== Causes of Right Atrial Enlargement== | |||
In alphabetical order: | |||
* [[Atrial aneurysm]] | |||
* [[Atrial septal defect]] | |||
* [[Cor pulmonale]] or [[right heart failure]] | |||
* [[Ebstein's anomaly]] | |||
* [[Pulmonic stenosis]] | |||
* [[Tricuspid prolapse]] | |||
* [[Tricuspid regurgitation]] | |||
* [[Tricuspid stenosis]] | |||
* [[Primary Cardiac Tumors|Tumor]] | |||
==The EKG in Right Atrial Enlargement== | |||
Right atrial enlargement is defined as either: | |||
* A [[P wave]] >2.5 mm in leads II, III and aVF | |||
* A [[P wave]] >1.5 mm in lead V1 | |||
Shown below is an illustration of right atrial enlargement: | |||
[[Image:right_atrial_enlargement.jpg|center|500px]] | |||
---- | |||
Shown below is an EKG demonstrating large P waves in leads to 2,3, and aVF which have a [[P-wave]] height greater than 2.5 mm consistent with right each one enlargement: | |||
[[Image:RAE.png|Right atrial enlargement|center|500px]] | |||
---- | |||
==Chest X-Ray== | |||
Shown below is the chest x-ray of a patient with [[Ebstein's anomaly]] in whom the right atrium is markedly enlarged as demonstrated by the convex curvature to the right border the heart. | |||
[[File:Ebstein's anomaly 2.JPG|center|500px]] | [[File:Ebstein's anomaly 2.JPG|center|500px]] | ||
[[Category:Electrophysiology]] | |||
[[Category:Cardiology]] | |||
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Latest revision as of 15:27, 29 August 2014
| Right atrial enlargement | ||
 | ||
|---|---|---|
| MeSH | [1] | |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [3]
Synonyms and keywords: Himalayan P waves, Himalayan P-wave, giant P waves, P pulmonale, right atrial abnormality, RAE
Overview
Right atrial enlargement can result from increased pressure in the pulmonary artery. A P wave >2.5 mm in leads II, III and aVF or a P wave >1.5 mm in lead V1 indicates right atrial enlargement. Despite the increase in the height of the P wave, the width of the P wave does not change. Sometimes these large P waves can be referred to as Himalayan P waves.
Causes of Right Atrial Enlargement
In alphabetical order:
- Atrial aneurysm
- Atrial septal defect
- Cor pulmonale or right heart failure
- Ebstein's anomaly
- Pulmonic stenosis
- Tricuspid prolapse
- Tricuspid regurgitation
- Tricuspid stenosis
- Tumor
The EKG in Right Atrial Enlargement
Right atrial enlargement is defined as either:
Shown below is an illustration of right atrial enlargement:
Shown below is an EKG demonstrating large P waves in leads to 2,3, and aVF which have a P-wave height greater than 2.5 mm consistent with right each one enlargement:
Chest X-Ray
Shown below is the chest x-ray of a patient with Ebstein's anomaly in whom the right atrium is markedly enlarged as demonstrated by the convex curvature to the right border the heart.
