What does a biphasic P wave mean?
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Julian Davis
Works at the International Fund for Agricultural Development, Lives in Rome, Italy.
A biphasic P wave refers to a P wave that has two distinct parts: an initial positive deflection followed by a negative deflection, or vice versa. This pattern can be seen in a normal electrocardiogram (ECG) and is particularly notable in lead V1. However, the presence of a biphasic P wave can also indicate certain cardiac conditions, such as right or left atrial hypertrophy, or atrial arrhythmias.
In a normal ECG, the P wave should have a maximal height of 2.5 mm in leads II and/or III. It is positive in lead II and AVF, and biphasic in lead V1. The characteristics of a normal P wave can help differentiate between a normal variant and a pathological condition.
Works at the International Civil Aviation Organization, Lives in Montreal, Canada.
The P wave morphology can reveal right or left atrial hypertrophy or atrial arrhythmias and is best determined in leads II and V1 during sinus rhythm. Characteristics of a normal p wave:[1] 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 biphasic in V1.
2011-1-12
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Ethan Martinez
QuesHub.com delivers expert answers and knowledge to you.
The P wave morphology can reveal right or left atrial hypertrophy or atrial arrhythmias and is best determined in leads II and V1 during sinus rhythm. Characteristics of a normal p wave:[1] 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 biphasic in V1.
