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EKG National Exam – Questions & Accurate Answers
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EKG National Exam – Questions & Accurate AnswersWhen the heart goes down to 40-60 beats per minute where is the impulse
generated ? ✔️Ans - usually in the AV Node
Which blood vessel leaves the heart and carries to all parts of the body?
✔️Ans - Aorta
When measuring the height of peaks in an EKG what number does each
large square represent? ✔️Ans - 5 millimeters by 5 millimeters
Each small square in an EKG is? ✔️Ans - 0.04 seconds
How can you calculate each heart rate of an EKG rate? ✔️Ans - count the
number of complete complexes in a 3 or 6 interval and multiply by 20 or 10
If the ventricles are in the systole phase what is happening? ✔️Ans -
they are pumping the blood out of the chamber by contraction
What is the membrane inclosing the heart? ✔️Ans - it is the pericardial
sac
What are the pericardial leads? ✔️Ans - they are chest leads
Normal standard is? ✔️Ans - 10 millimeters
What are leads? ✔️Ans - they are the colored wires that are put on a
patients limbs
What is AVL ? ✔️Ans - AVL is the difference in the hearts voltage
What is AVF? ✔️Ans - AVF is the difference in the hearts voltage
between the left leg and midpoint between left leg and right arm
what does V1 through V6 record? ✔️Ans - V1 through V6 records hearts
voltage from the front to the back of the heart, recorded from the central
point of the heart
, What is a sinus arrhythmia? ✔️Ans - it is changes in breathing
what does the term systole mean? ✔️Ans - flatline (death)
what is a heart murmur? ✔️Ans - a heart murmur is the sound of a
faulty action when the valves close
what is ischemia ✔️Ans - it is death to an area of the heart
when someone feels pain in the heart its because? ✔️Ans - when
someone feels pain in the heart it is because inadequate blood flow to the
heart muscle
what does MI stand for? ✔️Ans - MI stands for a myocardial infarction
what is one of the major causes of heart failure? ✔️Ans - one of the
major causes of heart failure is untreated blood pressure
What is a myocardial infarction? ✔️Ans - a myocardial infarction is when
the myocardial tissue suffers death to an area because of insufficient heart
blood flow
what is a major atherosclerosis ✔️Ans - it is the buildup of fat deposits
on the walls of the arteries leading to coronary arteries
who invented the electrocardiograph? ✔️Ans - Willem Einthoven and he
is a Dutch Physiologist
what is the inner layer of the heart called? ✔️Ans - endocardium
in what year was the first electrocardiogram introduced in the united
states ? ✔️Ans - 1909
the heart is composed of four chambers that are ? ✔️Ans - hollow
what is the internal pacemaker of the heart ? ✔️Ans - SA Node
the lower pumping chambers of the heart are called? ✔️Ans - ventricles
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