ECG 1 Flashcards
(12 cards)
Which leads offer an inferior view of the heart?
II, III, aVF
Which leads offer a lateral view of the heart?
I, aVL, V5, V6
Which leads offer an anterior view of the heart?
V3, V4
Which leads offer a septal view of the heart?
V1, V2
Healthy individuals’ axis on ECG?
Between -30 and +90
Which leads is the overall direction of electrical activity directed towards?
Leads I, II, III
Which lead are you expecting to see the most negative deflection?
aVR
- looks at the heart from the opposite direction
Right axis deviation common cause + signs?
Right ventricular hypertrophy (secondary to pulmonary hypertension)
Lead I deflection becomes negative
Leads III/aVF deflection becomes more positive
Left axis deviation signs?
Lead III + II become negative (has to be both)
- usually caused by conduction abnormalities
Sawtooth baseline represents?
Flutter waves
Chaotic baseline represents?
Fibrillation waves
How long is prolonged PR interval?
> 0.2 seconds
