Lecture 7: Heart Rhythmicity and Normal ECG Flashcards
1
Q
In a typical ECG, which of the following waves occurs at the beginning of the contraction of the atria?
A. T B. R C. S D. P E. Q
A
D. P
2
Q
Which of the following events is generally not seen on a typical ECG?
A. Atrial depolarization
B. Atrial repolarization
C. Ventricular depolarization
D. Ventricular repolarization
A
B. Atrial repolarization
3
Q
What is the mean electrical axis of the normal ventricles?
A
59 degrees
4
Q
Which of the following is the direction of the bipolar lead III?
A. 0 degrees
B. 60 degrees
C. 90 degrees
D. 120 degrees
A
D. 120 degrees
5
Q
Of the three bipolar leads, which one is connected to both the left and right arms?
A. Lead I
B. Lead II
C. Lead III
D. All leads only connected to one arm each
A
A. Lead I
