ECG Flashcards
(10 cards)
1
Q
what is Chronotropy?
A
the heart rate
2
Q
what is dromotropy?
A
the conduction speed
3
Q
what is ionotropy
A
the contractile strength
4
Q
how many seconds does a small 1mm box represent?
A
0.04 seconds
5
Q
how much seconds does a large box represent?
A
0.2 seconds
6
Q
normal time for a PR interval?
A
0.12 - 0.2
7
Q
why is there a delay of conduction at the AV node?
A
to allow for an atrial kick so 30% more blood can be passed through to the ventricles
8
Q
what is the duration of a physiological q wave?
A
0.03 seconds
9
Q
what is the normal duration of the QRS complex?
A
0.075 - 0.12 seconds
10
Q
A
