P Wave Morphology: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 5: | Line 5: | ||
|nextname=Step 6: QRS morphology | |nextname=Step 6: QRS morphology | ||
}} | }} | ||
{{authors| | {{authors| | ||
|mainauthor= [[user:Drj|J.S.S.G. de Jong, MD]], A. Bouhiouf, Msc | |mainauthor= [[user:Drj|J.S.S.G. de Jong, MD]], A. Bouhiouf, Msc | ||
| Line 14: | Line 13: | ||
|editor= | |editor= | ||
}} | }} | ||
[[Image:normalSR.jpg|thumb|Normal sinus rhythm with a positive p wave in leads I, II en AVF and a biphasic p wave in V1.]] | {{clr}} | ||
[[Image:p_wave_morphology.png|thumb|Altered P wave morfology is seen in left or right atrial enlargement.]] | |||
[[Image:pta_changes.svg|thumb|The PTa segment can be used to diagnose pericarditis or atrial infarction.]] | <div align="center"> | ||
{| class="wikitable" | |||
|- | |||
| | |||
{| | |||
|- | |||
| | [[Image:normalSR.jpg|thumb|center|300px| Normal sinus rhythm with a positive p wave in leads I, II en AVF and a biphasic p wave in V1.]] | |||
| | [[Image:p_wave_morphology.png|center|thumb|300px|Altered P wave morfology is seen in left or right atrial enlargement.]] | |||
| | [[Image:pta_changes.svg|thumb|center|300px|The PTa segment can be used to diagnose pericarditis or atrial infarction.]] | |||
|} | |} | ||
|} | |||
</div> | |||
The '''P wave morphology''' can reveal right or left atrial stretch or atrial arrhythmias and is best determined in leads II and V1 during sinus rhythm. | The '''P wave morphology''' can reveal right or left atrial stretch or atrial arrhythmias and is best determined in leads II and V1 during sinus rhythm. | ||
<div align="center"> | |||
{| class="wikitable" | {| class="wikitable" | ||
! Characteristics of a normal p wave:<cite>Spodick</cite> | ! Characteristics of a normal p wave:<cite>Spodick</cite> | ||
| Line 28: | Line 38: | ||
*The p wave duration is usually shorter than 0.12 seconds | *The p wave duration is usually shorter than 0.12 seconds | ||
|} | |} | ||
</div> | |||
Elevation or depression of the [[PTa segment]] (the part between the p wave and the beginning of the QRS complex) can result from [[Ischemia#Atrial infarction|Atrial infarction]] or [[Clinical Disorders#Pericarditis|pericarditis]]. | Elevation or depression of the [[PTa segment]] (the part between the p wave and the beginning of the QRS complex) can result from [[Ischemia#Atrial infarction|Atrial infarction]] or [[Clinical Disorders#Pericarditis|pericarditis]]. | ||
| Line 36: | Line 46: | ||
==Examples== | ==Examples== | ||
<div align="center"> | |||
<gallery> | <gallery> | ||
Image:Normaal ecg.jpg|An example of normal sinus rhythm. | Image:Normaal ecg.jpg|An example of normal sinus rhythm. | ||
Image:Nsr.jpg|Another example of normal sinus rhythm. | Image:Nsr.jpg|Another example of normal sinus rhythm. | ||
</gallery> | </gallery> | ||
</div> | |||
{{clr}} | {{clr}} | ||
{{box| | {{box| | ||
Revision as of 18:23, 30 May 2009
| «Step 4:Heart axis | Step 6: QRS morphology» |
| Author(s) | J.S.S.G. de Jong, MD, A. Bouhiouf, Msc | |
| Moderator | J.S.S.G. de Jong, MD | |
| Supervisor | ||
| some notes about authorship | ||
|
|
The P wave morphology can reveal right or left atrial stretch or atrial arrhythmias and is best determined in leads II and V1 during sinus rhythm.
| Characteristics of a normal p wave:[1] |
|---|
|
Elevation or depression of the PTa segment (the part between the p wave and the beginning of the QRS complex) can result from Atrial infarction or pericarditis.
If the p-wave is enlarged, the atria are enlarged.
If the P wave is inverted, it is most likely an ectopic atrial rhythm not originating from the sinus node.
Examples
An example of normal sinus rhythm.
Another example of normal sinus rhythm.
