Q1424
The p wave of a normal Electrocardiogram indicates
A.
Atrial depolarization
AnswerB.
Ventricular repolarization
C.
Atrial repolarization
D.
Ventricular depolarization
Answer: Option A
Solution
Answer: Option A
Solution:
The P wave indicates atrial depolarization. The P wave occurs when the sinus node, also known as the sinoatrial node, creates an action potential that depolarizes the atria. The P wave should be upright in lead II if the action potential is originating from the SA node.