ECGs Flashcards
What is a normal heart rate
60 - 100 bpm
Where on the ECG should you look at to best assess rhythm?
Leads II and V1
What is a normal QRS duration? What does the QRS represent?
Under 120ms
Ventricular depolarisation
(should be less than 3 small squares)
Wide QRS indicates a problem with what part of the heart?
Ventricles
What is a normal P wave duration? What does the P wave represent?
0.08 - 0.10 seconds
Atrial depolarisation
What is the PR interval duration? What does it represent?
0.12 - 0.20 seconds
AVN delay
(3 - 5 small squares)
If there is a short PR interval, it means something is bypassing the ____
If there is a short PR interval, it means something is bypassing the AVN
How do calculate a regular HR on an ECG?
300 / big squares between QRS
How to calculate an irregular HR on an ECG?
Number QRS complexes in 30 big squares X 10
What is the ECG speed?
25 millimeters per second
What part of the ECG represents SAN activity?
Can’t see SAN activity on an ECG
What ECG territories represent inferior heart? And what vessel?
II, III, aVF
Right coronary artery
What ECG territories represent anterior heart? And what vessel?
V1 - 4
LAD
What ECG territories represent lateral heart? And what vessel?
I, aVL, V5 - V6
Left circumflex
II, III, aVF, v4, v5, v6 = where is affected?
Inferolateral MI
