What does the five lead ECG primarily diagnose??
Ventricular dysrhythmias
What is the purpose of an electrocardiogram??
?To measure heart muscle activity
Which of the following is a function of an ECG??
To detect previous myocardial events
Which of the following are usually specifically identified by color and two or three letters which identify the location to place the electrodes??
?Leads
According to the North American limb lead color code, what color is used for the left leg (LL)??
Red
The augmented limb leads give views of the heart from what view??
?Coronal
When would informed consent occur??
?In a non-emergency clinical situation
Where is precordial Lead V4 positioned??
?In the 5th intercostal space along a point of reference called the mid-clavicular line
A lead that records the current in only one direction is called a _________ lead.?
?unipolar
What type of leads provide three views from a central point of the heart but only two of the views are of a heart wall??
?Augmented leads
What is the only lead where it is acceptable to place the electrode over a bone??
Lead V3
What lead is orientated toward the left ventricle's inferior wall??
aVF Lead
___________ the ECG procedure is very important for health care reimbursement.?
?Documenting
Which of the following means that the health care practitioner has discussed the procedure, the risks, and the benefits of the ECG and allowed the patient to clarify any questions??
?Informed consent
Which of the following can be made of foam, cloth, or wet gel and come in various sizes from neonate, infant, pediatric, and adult??
?Electrodes
What is the purpose of the grounding electrode??
?To reduce electrical interference from outside of the body
The precordial leads are also called __________ leads.?
Chest
Which of the following is the first step in patient preparation??
?Obtaining proper patient consent
Which precordial lead provides a transverse plane view of the interventricular septum of the heart??
Lead V1
Electrodes have a shelf life of approximately how many years??
Two
Using the three lead ECG for monitoring can detect _________________.?
?artifacts
What are leads called that carry no current??
Ground
What type of ECG is obtained with a 24-48 hour monitoring ECG machine??
Holter
On a normal ECG, the electrical current in Leads I, II, and III are all moving in what direction??
Upward
All six limb leads view the heart's electrical activity from the anterior to the posterior axis of the ______________.?
Coronal plane
What limb lead shows the potential difference between the left leg and left arm??
Lead III
All six precordial leads are considered _____________leads.?
Positive unipolar
In placing precordial leads, be sure to affix all the electrodes on the left side of the sternum with the exception of which lead??
Lead V1
The three lead ECG uses only which of the following lead combinations??
Right and left arm leads and left leg lead
The electrode for what lead is placed on the right side of the sternum at the 4th intercostal space??
Lead V1
How many leads does the Holter monitor contain??
5
What bone(s) goes straight down the middle of the chest??
Sternum
On an ECG, what measures the direction and intensity of voltage being discharged by the heart at a specific time??
Leads
Why are ECG electrodes attached to the skin??
?To help with the conduction of the sound
?What type of ECG test is completed while the patient is exercising using the ECG machine and a treadmill or stationary exercise bike?
Stress
According to the North American limb lead color code, what color is used for the right arm (RA)??
White
A __________ view means that the view of a particular wall can be viewed from more than one angle or that additional lead views will provide alternative views when a heart injury is suspected.?
?reciprocal
A ___________ is a graphical record which is made up of lines showing the direction and strength of electrical forces.
Vector
The first three limb leads are identified as Lead I, Lead II, and Lead III and are all what type of leads??
Bipolar
Which precordial lead provides a view of the anterior wall of the left ventricle from the transverse plane??
Lead V3