Basics
The EKG records the electrical activity of the heart using skin sensors called
What is electrodes
Do we record EKGs on normal or semi-log graph paper
What is normal graph
Normal sinus rhythm has what range of beats per minute
What is 60-100
Name 1 of the 3 main types of irregular rhythms
What is wandering pacemaker, multifocal atrial tachycardia, atrial fibrillation
First component of wave form.
What is p- wave.
The ability of the SA node to generate pacemaking stimuli is known as
What is automaticity
How many lines are their between 2 bold black lines
What is 5
What foci is pacing the heart at 60-80 beats/min
What is atrial foci
In a-fib, do you see any R waves?
What is yes, but no P waves
Follows the P wave and represents depolarization of the ventricles.
What is the QRS
Name the order of the hearts electrical conduction system
What is SA node, AV node, Bundle of HIs, Rt and Lt bundle branches, purkinje fibers
How much time is between 2 bold black lines, referring to time in seconds
What is .2 seconds
What is pacing it at 40-60 beats/min? What about 20-40?
What is 40-60-junctional foci 20-40-ventricular foci
In a ventricular escape rhythm (PVC), there is a widened _ _ _ complex
What is QRS
Represents ventricular recovery or repolarization.
What is t-wave
What part of the conduction system starts the ventricular conductino
What is Bundle of HIs
How much time is their between 2 thin lines
What is .04 seconds
What is a premature beat?
What is a beat earlier then expected
Represents the end of ventricular conduction and the beginning of recovery; a change may indicate MI
What is ST segment
What part of the heart cycle do we get a P wave
What is atrial depolarization
A standard EKG has 12 leads, 6 limb and 6 chest. Name 3 limb leads and 3 chest leads?
What is limbs-I,II,III, AVR, AVL, AVF chest-V1,V2,V3,V4,V5,V6
Explain a ventricular bigeminy
What is normal, pvc, normal, pvc, normal, pvc
Tracks the atrial impulse from the SA node through the AV node, bundle of His, and bundle Branches.
What is PR intraval