EKG
Which of the following converts cardiac arrhythmia into normal sinus rhythm ?
Cardioversion
Ventricular fibrillation
None of the above
Noninvasive Holter monitor
Cardioversion
Which of the following represents an error in technique when running an electrocardiogram?
Positioning the limb electrodes on the fleshy part of the upper arms and lower legs
Beginning application of electrodes on the patient’s left side
Positioning the machine so that the power cord runs under the patient table
Instructing the patient to lie still and not to talk during the procedure
Positioning the machine so that the power cord runs under the patient table
Which of the following is a device placed on the skin that picks up electrical impulses given off by the heart?
Lead wire
Electrolyte
Electrode
Amplifier
Electrode
Which of the following procedures involves taking a portion of a vein (typically the saphenous) and transplanting it into one or more of the hearts’ coronary arteries?
Laser angioplasty
Atherectomy
Coronary artery bypass
Coronary angioplasty
Coronary artery bypass
What is the next step in the ECG procedure after the electropad sensors are removed?
Unplug the machine.
Give the tracing to the physician.
Assist the patient as needed.
Turn the machine off.
Assist the patient as needed.
Which of the following is an example of an artifact caused by electrical interference?
Patient cough
DC interference
Patient sneeze
AC interference
AC interference
Why should an electrolyte be used when running an ECG?
An electrolyte amplifies the electrical impulses coming from the heart.
An electrolyte protects the patient from shocks generated by the electrocardiograph.
An electrolyte reduces the amount of dryness in the skin.
The skin is a poor conductor of electricity.
The skin is a poor conductor of electricity.
Which of the following would NOT need to be recorded in the Holter monitor patient activity diary?
Eating meals
Name of nearest relative
Bowel movements
Medications taken
Times of sleep
Name of nearest relative
Which of the following indicates ventricular depolarization?
QRS complex
PR segment
ST segment
QT interval
P wave
QRS complex
Which of the following is true about a treadmill stress test?
It is taken under uncontrolled conditions.
It is an invasive ECG tracing.
The stress test is monitored closely by the provider.
Electrodes are applied to the arms, chest, and legs.
The stress test is monitored closely by the provider.
The standard electrocardiogram shows the heart’s electrical activity from different angles through “leads.” How many leads are recorded?
12
10
7
5
12
What is the term used to refer to an ECG reading that is within normal limits?
Atrial fibrillation
Normal sinus rhythm
Baseline recording
Sinus arrhythmia
Normal sinus rhythm
Which of the following tests requires injecting the patient with a radioactive substance?
Echocardiogram
Coronary artery bypass
Thallium stress test
Electrocardiogram
Thallium stress test
Which of the following best describes the electrical conduction system of the heart?
A-V node to Purkinje fibers
A-V node to bundle of His
S-A node to Purkinje fibers
S-A node to left bundle branches
S-A node to Purkinje fibers
Which of the following best describes the contraction of the cardiac cells from the electrical discharge?
Negative deflection
Polarization
Depolarization
Repolarization
Depolarization
Which of the following artifacts can be caused by poor quality electrolyte gel?
Alternating current
Voluntary muscle movement
Somatic tremor
Wandering baseline
Wandering baseline
Which of the following is an important part of the patient education when preparing a patient to wear a Holter monitor?
Wear it even in the shower for an accurate reading.
Depress the event marker every hour on the half hour.
Keep a diary of the times of all symptomatic activities and emotions.
Remove the recorder from its case.
Keep a diary of the times of all symptomatic activities and emotions.
Which of the following electrodes is NOT used as part of the recording?
RL
LA
RA
LL
RL
Why would the medical assistant place the power cord pointing away from the patient and not allow the cable to go underneath the table?
Causes interrupted baseline
Causes somatic tremor artifacts
Helps reduce wandering baseline
Helps reduce AC interference
Helps reduce AC interference
Where does deoxygenated blood enter the heart?
Right ventricle
Pulmonary vein
Pulmonary artery
Right atrium
Right atrium
Which of the following best describes Leads I, II, and III?
Bipolar leads
Precordial leads
Augmented leads
Chest leads
Bipolar leads
Which of the following types of atrial arrhythmia is characterized by extremely rapid incomplete contractions?
Sinus bradycardia
Paroxysmal atrial tachycardia
Premature atrial contraction
Atrial fibrillation
Atrial fibrillation
Which of the following would NOT result in somatic tremor artifact?
Apprehensive patient
Patient discomfort
Patient coughing or talking
Improper grounding of the ECG machine
Improper grounding of the ECG machine
Which of the following best describes an electrocardiogram?
Graphic representation of the heart’s electrical activity
Visualization of the heart’s activity
Only indicated when patients have symptoms
Performed on every adult patient over 40
Graphic representation of the heart’s electrical activity
Which of the following occurs if the metal tip of a lead wire becomes detached from an electrode?
Alternating current artifacts
Wandering baseline
Muscle artifacts
Interrupted baseline
Interrupted baseline