Parts of the trace Flashcards
understand what each lead, piece of the complex and interval represents physiologically
1
Q
AT 25mm/sec what time frames do squares represent
A
5 Large squares = 1sec
1 large square = 0.2 sec / 200ms
1 small square = 0.04 sec / 40 ms
2
Q
P wave
A
Atrial depolarisation
3
Q
QRS
A
Ventricular depolarisation (obscures re polarisation of atria)
4
Q
ST segment
A
Contraction
5
Q
T wave
A
Re polarisation of ventricles
6
Q
R-R interval
A
one cardiac cycle
7
Q
P-R interval
A
transmission of electrical signal to ventricles
8
Q
Anterior septal leads
A
V1-4
9
Q
Lateral (left ventricle) Leads
A
1, aVL, V5-6
10
Q
Inferior leads
A
2, 3, aVF
11
Q
lead looks at R. Atrium
A
aVR
12
Q
leads V1-4
A
give anterior-septal view
13
Q
Leads 1, aVL, V5+6
A
give lateral view of left ventricle
14
Q
Leads 2,3 and aVF
A
give inferior view
15
Q
aVR
A
looks at right atrium
