ECG Flashcards
1
Q
What do the electrodes on the skin surface detect?
A
muscle fibre depolarisation caused by myocardial contraction
2
Q
What is the standard electrical activity of the heart represented by the ECG trace?
A
- sinoatrial node depolarisation
- atrial depolarisation
- atrio-ventricular node delay
- septal depolarisation
- ventricular depolarisation (via the bundle of His)
3
Q
What does the P wave represent?
A
- electrical activity starting at the sino-atrial node
- atrial depolarisation
heart is thus in a sinus rhythm
4
Q
What causes the much larger
A
