EKG Exam Test Questions Complete Solutions New Update (Verified A+ Pass)
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Course
EKG
Institution
EKG
EKG Exam Test Questions Complete Solutions New Update (Verified A+ Pass)
What is the heart? - Answers - The muscle responsible for the process by which blood is pumped throughout the body.
Pericardium - Answers - The layer or sac that surrounds the heart.
Myocardium - Answers - The middle ...
EKG Exam Test Questions
Complete Solutions New Update
(Verified A+ Pass)
What is the heart? - Answers -✔✔ The muscle responsible for the process by which
blood is pumped throughout the body.
Pericardium - Answers -✔✔ The layer or sac that surrounds the heart.
Myocardium - Answers -✔✔ The middle layer of heart muscle.
Endocardium - Answers -✔✔ The innermost layer of heart muscle.
Epicardium - Answers -✔✔ The top layer of heart muscle.
Conduction System of the Heart - Answers -✔✔ The system responsible for the
regulation of the pumping action of the heart, as well as the conduction of the electrical
impulses that causes the myocardium to contract.
Conduction system pathway - Answers -✔✔ Sinoatrial (SA) node, atrioventricular (AV)
node, Bundle of His, right and left bundle branches, purkinje fibers
Myocardial infarction - Answers -✔✔ Commonly known as a heart attack, is a term that
refers to an obstruction to the myocardial tissue. This obstruction causes an interruption
of the blood supply to part of the heart which causes the heart cells to die.
Myocardial ischemia - Answers -✔✔ Also known as angina, is a condition caused by a
lack of oxygen-rich blood in the heart.
Arrhythmia - Answers -✔✔ A term used to refer to any disorder of your heart rate or
rhythm.
Limb Leads - Answers -✔✔ 1. Lead I: Records electrical activity from right arm to left
arm
2. Lead II: Records electrical activity from right arm to left leg
3. Lead III: Records electrical activity from left arm to left leg
Augmented Leads - Answers -✔✔ 1. aVR: Records electrical activity away from
midpoint between left arm and left leg to right arm (across heart to right shoulder)
2. aVL: Records electrical activity from midpoint between right arm and left leg to left
arm (across heart to left shoulder)
, 3. aVF: Records electrical activity from midpoint between right arm and left arm to left
leg (across heart toward feet)
Chest or Precordial Leads - Answers -✔✔ 1. V1: Records electrical activity between
center of heart and the chest wall where V1 electrode is placed
2. V2: Records electrical activity between center of heart and the chest wall where V2
electrode is placed
3. V3: Records electrical activity between center of heart and the chest wall where V3
electrode is placed
4. V4: Records electrical activity between center of heart and the chest wall where V4
electrode is placed
5. V5: Records electrical activity between center of heart and the chest wall where V5
electrode is placed
6. V6: Records electrical activity between center of heart and the chest wall where V6
electrode is placed
Isoelectric line - Answers -✔✔ A term used to describe a straight line on the ECG strip
with illustrates the resting state of the myocardial cells.
The Five Steps for Analyzing an ECG - Answers -✔✔ Heart rate, regularity, P-waves,
QRS complex, and P-R interval.
The 6 Second Interval x 10 Method - Answers -✔✔ This involves counting the number
of QRS complexes on a 6 second rhythm and multiplying that number by 10, this is the
only method that can be used on an irregular rhythm.
The 300, 150, 100, 75, 60, 50 Method. - Answers -✔✔ This involves locating an R-
wave on a bold line on the ECG paper then finding the next consecutive R wave and
counting down from 300 on the subsequent bold lines to determine the rate.
1500 Method - Answers -✔✔ Count number of small squares between two consecutive
R-waves and divide that number by 1500, it is the most accurate method of obtaining
the heart rate but can only be used on regular rhythms.
Rate Calculators - Answers -✔✔ Rate calculators are devices that you use to measure
between R-waves and it gives you the rate. You count the QRS complexes to get the
Ventricular rate and count the P-waves to determine the atrial rate.
Regularity - Answers -✔✔ The second step in analyzing an ECG. To find this you
measure the distance between all the R-R waves on the strip and if they are all the
same the rhythm is called regular, if not the rhythm is called irregular and irregular
rhythms are considered abnormal. You can also measure the P-waves and this is called
the P-P interval to see if they are regular
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