Flashcards in 12 Lead EKG Deck (23):
Who invented the Electrocardiogram?
What polarity is the right arm for leads?
What polarity is the left leg for limb leads?
Which limb lead can be either positive or negative polarity?
What are he three different types of ECG leads?
Bipolar, unipolar, precordial
Which limb leads are bipolar?
I, II, and III
What is the normal polarity of cardiac cells?
What occurs when cardiac cell depolarization occurs?
Sodium enters into the cell and Potassium exits from the cell
What pathways connect the SA node to the AV node?
In a 12 lead how should a QRS complex appear on aVR?
What are the first four things you look at for a 12 lead?
What are things to consider with wide QRS?
Right or left block
How do you determine right or left branch blocks?
negative deflection (Left branch)
positive deflection (Right branch)
How to determine axis in 12 lead?
Look at lead 1 and aVF and determine whether most of the rhythm occurs above or below the isoelectric line
How should ST segments appear?
at the isoelectric line
When does ST segment elevation occur
When there is transmural myocardial injury
ST segment depression indicates what?
What is Transmural MI
Full covering block
1 mm ST segment elevation in 2 or more contiguous leads
Which leads are for interior MI
II, III, aVF
Which leads are for Septal MI
Which leads are for anterior MI