Ex 3: ECG Flashcards
1
Q
What is an electrocardiogram?
A
average electrical potential of the cardiac muscle over time
2
Q
What is an ECG Machine?
A
precision galvanometer- and it determines the electrical activity (voltage differential)
3
Q
What electrodes are dipole?
A
Limb leads: Lead I, Lead II, and Lead III
4
Q
What electrodes are Unipole electrodes?
A
augmented leads, aVR, aVL, aVF
Precordial/Chest leads: V1-v6
5
Q
What does the P wave represent?
A
atrial depolarization
6
Q
What does the QRS complex represent?
A
ventricular muscle depolarization
7
Q
What does the T wave represent?
A
ventricular repolarization
