Different P Wave morphology.


In a rhythm strip A, presents Pulmonary P wave that suggests right atrial enlargement. P wave with duration less than 120ms and amplitude more than 2.5mm. 
In a rhythm strip B, presents Mitrale P wave that suggests left atrial enlargement. P wave with duration more than 120 ms and amplitude less than 2.5mm. 
In a rhythm strip C, presents Biphasic P wave with terminal negative portion more than 40 ms and more than 1mm deep which suggests left atrial enlargement. 
In a rhythm strip D, presents Inverted P wave preceding each QRS complex with normal PR interval that suggest low atrial rhythm. 
In a rhythm strip E, presents Normal P wave that suggests normal sinus rhythm.

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