Name the condition in which the heartbeat is too rapid, and give the heart rate that defines this condition.
What is tachycardia, 100 beats/minute
100
Ventricular arrhythmias
What is are more dangerous than atrial arrhythmias,
usually cause incomplete ventricular contractions,
result in insufficient systemic oxygenation
100
Which wave represents repolarization?
What is T wave
100
An electrocardiogram is a recording of the
What is electrical activity of the heart
100
Where is the chest electrode V2 located?
What is at the fourth intercostal space at the left margin of the sternum
200
A device on the skin that picks up electrical impulses given off by the heart is known as a(n)
What is electrode
200
assess the effectiveness of cardiac medications,
detect intermittent cardiac arrhythmias,
evaluate unexplained syncope in patients,
assess the functioning of an artificial pacemaker
What is Holter Monitor
200
The precordial leads include
What is leads I, II, and III
200
The augmented leads are
What is unipolar
200
If a patient has had a limb amputated, where would the electrode be placed?
What is tape the electrode to the site of amputation
300
Interference picked up by the ECG machine
What is artifacts
300
When no abnormalities show during a resting ECG, the physician may order an exercise ECG.Another name for this test is
What is Stress Test
300
Leads I, II, and III are called
What is standard leads
300
Discharge of electrical energy occurs during
What is depolarization
300
The portion of the electrocardiogram (ECG) that relates to ventricular depolarization is the
What is QRS complex
400
The aVR, aVL, and aVF leads are called
What is augmented leads
400
Electrocardiograms are usually recorded with the ECG paper moving at the speed of
What is 25 mm/second
400
The QRS complex represents
What is contraction of the ventricles
400
Electrical stimulation of the ventricular tissue takes place in the
What is Purkinje fibers
400
If the SA node does not stimulate electrical impulses in the heart, this function is usually taken over by the
What is AV node
500
A “rhythm strip” is usually lead
What is II
500
The aVR, aVL, and aVF leads are called
What is augmented leads
500
What is the name given to the modified myocardial cells that set the pace of the heart?
What is sinoatrial (SA) node
500
The ____ wave is the first wave of the cardiac cycle.