ECG Flashcards
How long is a standard ECG strip?
10 seconds
How long is one small square in seconds?
0.04
How long is a one big square in seconds?
0.2seconds
How long should a p wave be?
<120ms or <3 small squares
How long should the PR interval be?
Between 120ms and 200ms
Between 3 and 5 small squares
How long should QRS complex be?
<120ms or <3 small squares
How long should the QT segment be?
In males <400ms or <2 big squares
In females <440ms or <2 big squares and one small
What is this?
Atrial Fibrillation
What is this?
Wolff Parkinson white
Delta waves are present which shows pre excitation syndrome
What is this?
Ventricular tachycardia
Broad QRS complexes
What is this?
1st degree heart block
Continuous prolonged PR intervals >120ms
What is this?
2nd degree heartblock type 1
Progressive prolongation of PR interval until a ventricular contraction is completely missed
What is this?
Second degree heart block Mobitz type 2
Intermittent conduction of P waves with no elongated PR interval
What is this?
3rd degree heart block
Complete dissociation between atrial and ventricular depolarisation
What is this?
Ventricular fibrillation