ECG Flashcards
1
Q
what does a wave of depolarisation cause?
A
positive deflection on ECG
2
Q
at rest what is the polarity of cells and ECF?
A
cells= negative charge ECF= positive charge
3
Q
if a wave of depolarisation was travelling to a positive electrode what happens on the ECG?
A
positive deflection
4
Q
if a wave of repolarisation was travelling to a negative electrode what happens on the ECG?
A
negative deflection
5
Q
what is the relationship between deflection and dipole size?
A
Bigger deflections on the ECG are caused by bigger dipoles (vectors?)
6
Q
which leads covers the inferior border of the heart?
A
Lead II, Lead III, AVF
7
Q
Which leads coversthe lateral border of the heart?
A
Lead I, AVL, V5, V6
8
Q
Which leads covers the inter-ventricular septum?
A
V1, V2
9
Q
Which lead covers the anterior border of the heart?
A
V3, V4
