ECGs Flashcards
1
Q
What does the PR interval represent?
A
the time for electrical activity to move between the atria and ventricles
2
Q
What does the ST segment represent?
A
the time between depolarisation and repolarisation of the ventricles
3
Q
What does the QT interval represent?
A
the time taken for the ventricles to depolarise and then repolarise
4
Q
How much time does a large square represent on ECG?
A
0.2 seconds
5
Q
How much time does a small square represent on ECG?
A
0.04 seconds
