Abnormal Rhythms & ECG Flashcards
1
Q
What is the conduction of the heart?
A
1) Sinoatrial (SA) node
2) Internodal pathways (atria)
3) Atrioventricular (AV) node
4) Bundle of Hi
5) Bundle branches
6) Purkinje firbres
2
Q
What does the P wave represent?
A
Atrial depolarisation
3
Q
What does the QRS complex represent?
A
Ventricular depolarisation & atrial repolarisation
4
Q
What does the T wave represent?
A
Ventricular repolarisation
5
Q
What does the PR interval represent?
A
Tracks atrial impulse through AV node, down Bundle of His and left & right bundle branches
6
Q
How to determine heart rate on an ECG?
A
300 / number of small squares between P waves
7
Q
What indicates an MI on an ECG?
A
Elevated or depression P wave or ST segment
