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P Wave Morphology: Difference between revisions
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'''Characteristics of a normal p wave:'''<cite>Spodick</cite> | '''Characteristics of a normal p wave:'''<cite>Spodick</cite> | ||
*The maximal height of the P wave is 2.5 mm in leads II and / or III | *The maximal height of the P wave is 2.5 mm in leads II and / or III | ||
*The p wave is positive in II and AVF, and | *The p wave is positive in II and AVF, and biphasic in V1 | ||
*The p wave duration is shorter than 0.12 seconds | *The p wave duration is shorter than 0.12 seconds | ||
}} | }} | ||
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</div> | </div> | ||
==The | ==The Abnormal P wave== | ||
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]]. | ||