P Wave Flashcards
(4 cards)
1
Q
What is the criteria for right atrial hypertrophy?
A
A P wave amplitude of >2.5 mm in lead II, III, or aVF
2
Q
What is the criteria for left atrial hypertrophy
A
A negative component of P in V 1, > .04 sec
A Negative phase of P in V1, > 1 mm
Notched P with an inter-peak interval of > .04 sec
3
Q
Where is the SA node?
A
IN the right atrial - top center near where the supervena cava enters
4
Q
Why is the P wave have the greatest amplitude in lead II
A
lead II aligns with the direction the right atrial running from top to bottom
