An EKG lead provides a particular view of the hearts negative and positive directions
What is the hearts electrical activity between two points?
100
This interval represents the time required for electrical impulse to leave the SA node and travel through the Atria, AV nodes, the bundle Branches and parking network
What is the PR Interval?
100
The ability of the cell to spontaneously generate and discharge an electrical impulse
What is Automaticity?
100
The electrical impulses are formed in the sinoatrial (SA) node and discharged regularly at a rate of 60-100 times per minute
What is normal sinus rhythm?
100
This is a general term used to describe disturbances in the atrioventricular (AV) conduction
What is Heart Block?
200
This segment of the EKG shows Atrial depolarization
What is the P-Wave?
200
This segment represents the end of ventricular depolarization
What is ST Segment?
200
The ability of the cell to respond to an electrical impulse
What is Excitability?
200
This originates in the SA node and discharges impulses regularly at a rate between 100-160 times per minute
What is Sinus Tachycardia?
200
The Sinus impulse is conducted normally to the AV node, where it is delayed longer than usual before conducted to the ventricles.
What is First Degree AV Block?
300
This segment represents the latter part of the ventricular depolarization
What is the U wave?
300
This interval represents the time between the onset of ventricular depolarization and the end of ventricular repolarization
What is the QT Interval?
300
The ability of the cell to transmit an electrical impulse from one cell to another
What is conductivity?
300
This originates in the SA node and discharges impulses regularly between 40-60 times per minute
What is Sinus Bradycardia?
300
This is characterized by a failure of some of the sinus impulses to be conducted to the ventricles
What is Second-Degree AV Block/ Type I (Moritz I or Wenchebach)?
400
This segment of the EKG represents Ventricular Depolarization
What is the QRS complex?
400
The electrical cells generate and conduct electrical impulses that result in contraction and relaxation of these cells
What is the myocardial cells?
400
The ability of the cell to shorten and lengthen its muscle fibers
What is contractility?
400
This originates in the sinus node and discharges impulses irregularly. The heart rate may remain normal 60-100 beats per minute
What is Sinus Arrhythmia?
400
This is characterized by a failure of some of the sinus impulses to be conducted to the ventricles. The differences include anatomical location and severity of conduction disturbances.
What is Second Degree AV Block Type II (Moritz II)?
500
This segment of the EKG represents the Ventricular depolarization
What is the T-Wave?
500
This consists of one heart beat or one P-QRS-T sequence.
What is the cardiac cycle?
500
The ability of the cell to stretch
What is Extensibility?
500
This originates in the sinus node and is characterized by a pause in the sinus rhythm in which one or more beats are missing
What is Sinus Arrest?
500
There is no conduction of stimuli from the atria to the ventricles. They beat independently of each other.
What is Third Degree Heart Block (Complete Heart Block)?