Conduction and Anatomy
Known as the body's natural pacemaker
What is SA Node
This limb electrode is used as the reference point/ground in an ECG
What is the right leg
Normal paper speed for ECG
What is 25mm per second
Term used to describe a heart beat less that 60 beats per minue
Sinus Bradycardia
Represented by the P-wave, it shows electrical impulse starting in the SA node causing the atria to contract
What is atrial depolarization
This chamber contracts to send oxygenated blood through the aortic valve and out to the body or systemic system
What is the left ventricle
After the first precordial electrode is placed, what is the correct order for the remaining electrodes
What is V2, V4, V3, V5, and V6 or V2, V4, V3, V6, and V5
ECG is the abbreviation for this instrument that measures heart function
Electrocardiogram
How long on average is one cardiac cycle in seconds?
0.8 seconds
This arrhythmia will result in death without immediate treatment
What is ventricular fibrillation
The chamber that receives oxygenated blood from the lungs
What is the left atrium
This type of artifact is caused by patient muscle movement
What is somatic tremor
This moves against the tracing paper to record the waves of an ECG cycle
What is the stylus
The period when neither the ventricles or atria are contracting. Point of relaxation
What is diastole
The arrhythmia viewed as a common disruption in rhythm
What is Premature ventricular contraction or PVC
ECG artifact is seen on leads I and II this is the likely source of interference
What is the RA electrode
Important part of the Holter monitor that provides a link to patient activity at the time of any abnormal findings.
What is the patient diary
Formula used for calculating heart rate using the QRS Complex
What is count the number of QRS complexes in 6 seconds and multiply by 10
ECG artifact is seen on leads II and III, this is the likely source of interference
What is the the left leg electrode
A stress test measures this in a patient
What is how the heart reacts to the need for increase O2 during exercise
A reduction of blood flow to the heart
What is myocardial ischemia
What is atrial repolarization