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P Wave Morphology: Difference between revisions
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[[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.]] | |||
[[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.]] | |||
The ''p wave morphology'' can reveal right or left atrial stretch. | The ''p wave morphology'' can reveal right or left atrial stretch. | ||
The P-wave morphology is best determined in leads II and V1 during sinus rhythm. | The P-wave morphology is best determined in leads II and V1 during sinus rhythm. | ||
{| class="wikitable" | {| class="wikitable" | ||
! Characteristics of a normal p wave:<cite>Spodick</cite> | ! Characteristics of a normal p wave:<cite>Spodick</cite> | ||
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If the P wave is inverted, it is most likely an [[ectopic atrial rhythm]] not originating from the sinus node. | If the P wave is inverted, it is most likely an [[ectopic atrial rhythm]] not originating from the sinus node. | ||
{{clr}} | {{clr}} | ||
==Examples== | |||
<gallery> | |||
Image:Normaal ecg.jpg|thumb| An example of normal sinus rhythm. | |||
Image:Nsr.jpg|thumb| Another example of normal sinus rhythm. | |||
</gallery> | |||
==References== | ==References== | ||
<biblio> | <biblio> | ||
#Spodick pmid=1575201 | #Spodick pmid=1575201 | ||
</biblio> | </biblio> | ||