EKG test
True or False? A heart attack is an "electrical" problem and sudden cardiac arrest is a "circulation" problem.
False
With a ventricular pacemaker, a spike is seen after the QRS complex.
False
A provider requests a rhythm strip in addition to a regular EKG tracing for a patient. The medical assistant should identify that which of the following leads provides the clearest recording of the heart rhythm?
II
A medical assistant is preparing a patient for an EKG. Which of the following instructions should the medical assistant provide?
"remove all clothing from the waist up."
Which of the following is the correct placement for V1 electrodes?
4th intercostal space, right of the sternum
All of the following are guidelines for electrode use and maintenance, except:
store electrodes in a refrigerator
If there are artifacts seen on the EKG tracing on Leads I and III, check the left leg electrode.
False
Which chamber of the heart receives oxygenated blood from the lungs?
Left atrium
Which chamber of the heart contracts to send oxygenated blood through the aortic valve and out to the body's cells?
Left ventricle
Which of the following color is associated with the V5 chest or precordial lead?
Orange
Which of the following statements is true?
Place limb leads on soft tissue surfaces rather than the bone
Which component of the ECG cycle shows ventricular depolarization?
QRS
If ECG artifacts are seen on Leads I and II, what is the likely source of interference?
Right arm electrode
Which limb electrode is used as a reference point and is not part of the ECG recording?
Right leg (RL)
Which of these tissues is known as the body's "natural pacemaker?"
SA node
A medical assistant is preparing a patient who has shortness of breath for an EKG. In which of the following positions should the assistant place the patient?
Semi-fowler's
The lines between which leads form Einthoven's triangle?
Standard
A medical assistant notes a wandering baseline throughout an EKG tracing. Which of the following electrocardiograph issues could have resulted in this occurrence?
The electrode pads were defective or poorly attached.
An atrial pacemaker will generate a spike followed by a P wave and a normal QRS complex.
True
Which of the following are precordial leads?
V1, V2, V3, V4, V5, V6
Which of the following options is a correct chest electrode placement?
V3 electrode is placed midway between V2 and V4 on the 5th rib.
Which of these arrhythmias will result in death without immediate treatment?
Ventricular Fibrillation
electrocardiogram
a cardiac test that records electrical activity of the heart, provides information about heart rate and rhythm, and can show evidence of a previous heart attack
holter monitor
a portable device for cardiac monitoring that is worn for at least 24 hours
premature atrial contraction
a premature contraction that results when the atria are triggered to contract earlier than they should
ventricular tachycardia
a regular, fast rhythm characterized by large, irregular, wide QRS complexes on the EKG.
atrial flutter
a single area within the atrial tissue firing at a faster rate than the rate the ventricles are responding to
ventricular fibrillation
a type of abnormal heart rhythm in which ventricles twitch or quiver, not pumping blood to the rest of the body
sinus rhythm
rhythm that originates from the sinus (SA) node and describes the characteristic rhythm of the human heart.
Which of the following locations is the white wire connected?
right arm
artifact
alteration or interference on the EKG that is not related to cardiac electrical activity; appears as distorted lines or waves
The stiffening of blood vessels due to fatty plaque build up is called ____________.
atherosclerosis
Atrial tachycardia is a regular, fast rhythm characterized by large, irregular, wide QRS complexes on the EKG.
false
Which of the following symptoms does not warrant an order for EKG?
headache
A medical assistant notices rhythmic sharp spikes throughout an EKG tracing. Which of the following artifacts is occurring?
interference
Which of the following locations is the red wire connected?
left leg
stress testing
monitoring the heart during exercise on a treadmill or stationary bike to evaluate how the heart responds to stress
A reduction in blood flow to the heart is called _________________.
myocardial ischemia
premature ventricular contraction
premature contraction in the ventricles
When performing an EKG, a medical assistant notices a widened QRS complex on the patient's EKG strip. Which of the following is a possible cause of this type of artifact?
premature ventricular contraction
