During cardiac cell electrical activity, what state represents the resting potential before an electrical impulse?
Polarized state
Which ECG lead represents the electrical current traveling from right arm to left arm
Lead 1
Which type of ECG monitoring is surgically implanted under the skin and can continuously record for 2-3 years?
Implantable Loop Recorder
What characterizes a sinus bradycardia rhythm?
Adult heart rate is below 60 beats per minute
Which ECG wave represents ventricular recovery?
T wave
What is an ‘artifact’ in ECG terminology?
Unwanted, erratic movement of the stylus on paper
What is the primary purpose of a nuclear stress test?
Shows blood flow into the heart muscle during rest and activity
Which ECG interval represents the time from the beginning of atrial contraction to the beginning of ventricular contraction?
PR Interval
How many total leads are created during a 12-lead ECG? ASKKK
12
What is the primary method to calculate heart rate using the 1500 method?
Count number of small boxes between two R waves or the two P waves; divide the number into 1500
What is a critical patient instruction during ECG procedure?
Painless
Ten electrodes and wires are placed on body
Machine will take 12 pictures of electrical activity of heart
not talk, stay still
No cell phone
Provider will need to look at ECG pictures and then patients will be notified of results
Which arrhythmia involves electrical impulses not reaching the ventricles?
Third degree heart block
What special coating is used on thermal ECG paper?
Special heat sensative coating
What is the maximum duration of a cardiac event recorder?
Worn up to 30 days
During ECG analysis, what is examined from left to right?
ECG rhythm strip (lead ll view)
What electrical state occurs when an impulse hits a cardiac cell?
Depolarized state
Which chest leads provide information about the horizontal plane of the heart?
CHEST or precordial leads
What is a premature atrial contraction (PAC) characterized by?
Premature atrial contraction (PAC) can appear on ECG as an abnormally shaped P wave or an extra P wave
How many electrodes are typically placed during a standard 12-lead ECG?
10
What is the ethical obligation when performing an ECG?
accurately and carefully as possible
