EKG NATIONAL EXAM 2026 STUDY GUIDE |
PRACTICE QUESTIONS, ANSWERS &
CARDIAC RHYTHM INTERPRETATION
| GRADED A+ | GUARANTEED SUCCESS
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales Included
, when measuring the height of peaks in an EKG what 5 millimeters by 5 millimeters
number does each large square represent?
each small square in an EKG is? 0.04 seconds
how can you calculate each heart rate of an EKG rate? 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 they are pumping the blood out of the chamber by contraction
happening?
what is the membrane inclosing the heart? it is the pericardial sac
what are the pericardial leads? they are chest leads
normal standard is? 10 millimeters
what are leads? they are the colored wires that are put on a patients limbs
what is AVL ? AVL is the difference in the hearts voltage
what is AVF? 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? 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? it is changes in breathing
what does the term systole mean? flatline (death)
what is a heart murmur? a heart murmur is the sound of a faulty action when the valves close
what is ischemia it is death to an area of the heart
when someone feels pain in the heart its because? when someone feels pain in the heart it is because inadequate blood flow to the
heart muscle
what does MI stand for? MI stands for a myocardial infarction
what is one of the major causes of heart failure? one of the major causes of heart failure is untreated blood pressure
What is a myocardial infarction? a myocardial infarction is when the myocardial tissue suffers death to an area
because of insufficient heart blood flow
what is a major atherosclerosis it is the buildup of fat deposits on the walls of the arteries leading to coronary
arteries
who invented the electrocardiograph? Willem Einthoven and he is a Dutch Physiologist
PRACTICE QUESTIONS, ANSWERS &
CARDIAC RHYTHM INTERPRETATION
| GRADED A+ | GUARANTEED SUCCESS
Updated 2026 Questions and Answers
100% Verified Exam Prep and Comprehensive
Rationales Included
, when measuring the height of peaks in an EKG what 5 millimeters by 5 millimeters
number does each large square represent?
each small square in an EKG is? 0.04 seconds
how can you calculate each heart rate of an EKG rate? 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 they are pumping the blood out of the chamber by contraction
happening?
what is the membrane inclosing the heart? it is the pericardial sac
what are the pericardial leads? they are chest leads
normal standard is? 10 millimeters
what are leads? they are the colored wires that are put on a patients limbs
what is AVL ? AVL is the difference in the hearts voltage
what is AVF? 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? 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? it is changes in breathing
what does the term systole mean? flatline (death)
what is a heart murmur? a heart murmur is the sound of a faulty action when the valves close
what is ischemia it is death to an area of the heart
when someone feels pain in the heart its because? when someone feels pain in the heart it is because inadequate blood flow to the
heart muscle
what does MI stand for? MI stands for a myocardial infarction
what is one of the major causes of heart failure? one of the major causes of heart failure is untreated blood pressure
What is a myocardial infarction? a myocardial infarction is when the myocardial tissue suffers death to an area
because of insufficient heart blood flow
what is a major atherosclerosis it is the buildup of fat deposits on the walls of the arteries leading to coronary
arteries
who invented the electrocardiograph? Willem Einthoven and he is a Dutch Physiologist
