ECG Flashcards
1
Q
What does the P wave represent
A
- atrial depolarisation
2
Q
How do you calculate heart rate on a regular heart rate?
A
- how many large squares in R-R interval
- 300/how many squares
3
Q
How do you calculate heart rate on an irregular rhythm?
A
- number of cardiac cycles in 6s(30 large squares) x10
4
Q
Normal QRS width?
A
- 0.12seconds
1. 5-3 small boxes
5
Q
Narrow QRS suggests?
A
- atrial origin or SA node
6
Q
Broad QRS suggests?
A
- ventricular in origin
7
Q
Prolonged PR may indicate
A
- AV block
8
Q
Shortened PR interval may indicate
A
- accessory pathway
9
Q
Treatment of bradycardia
A
- atropine
