Basics
The number of leads used in a typical EKG tracing
What is 12
EKG measures this?
What is the electrical activity in the heart
This technique will give you the most accurate heart rate when analyzing a regular heart rhythm
What is the 1500 technique
If elevated, this wave &/or segment may indicate injury or infarction.
What is the T-wave/ST segment
When the ventricles depolarize, this complex is generated
What is the QRS complex
Electrocardiographic alterations, not related to cardiac electrical activity resulting in distortion of the baseline and waves.
What is artifacts
Represents the time of atrial depolarization and up to, but not including the start of ventricular depolarization...correlates with conduction time through the AV node.
What is the PR Interval
Heart rate times stroke volume
What is cardiac output
A logical and systematic process for analyzing ECG tracing
What is a Five Step Process
Looks like any rhythm that should have a pulse but does not
What is pulseless electrical activity (PEA)
An EKG reveals an absence of P waves and an irregular rhythm. This is the most likely diagnosis.
What is atrial fibrillation
Three ions associated with cardiac physiology
What are Potassium, Calcium and Magnesium
This is measured on the vertical axis of the EKG
What is voltage
If there are 3 large squares in an R-R interval what would the heart rate be?
What is 100 beats per minute
Prolonged PR
What is a reflection of slowed conduction through the AV node
Ventricular repolarization is noted on the EKG as this
What is the T wave