HOSA EKG EXAM 4 EXAM PREP QUESTIONS
AND ANSWERS 2026 PRACTICE SOLUTION
VERIFIED RESULTS
◉ which blood vessel leaves the heart and carries to all parts of the
body?
Answer: Aorta
◉ when measuring the height of peaks in an EKG what number does
each large square represent?
Answer: 5 millimeters by 5 millimeters
◉ each small square in an EKG is?
Answer: 0.04 seconds
◉ how can you calculate each heart rate of an EKG rate?
Answer: 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?
Answer: they are pumping the blood out of the chamber by
contraction
,◉ what is the membrane inclosing the heart?
Answer: it is the pericardial sac
◉ what are the pericardial leads?
Answer: they are chest leads
◉ normal standard is?
Answer: 10 millimeters
◉ what are leads?
Answer: they are the colored wires that are put on a patients limbs
◉ what is AVL ?
Answer: AVL is the difference in the hearts voltage
◉ what is AVF?
Answer: 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?
, Answer: 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?
Answer: it is changes in breathing
◉ what does the term systole mean?
Answer: flatline (death)
◉ what is a heart murmur?
Answer: a heart murmur is the sound of a faulty action when the
valves close
◉ what is ischemia
Answer: it is death to an area of the heart
◉ when someone feels pain in the heart its because?
Answer: when someone feels pain in the heart it is because
inadequate blood flow to the heart muscle
◉ what does MI stand for?
Answer: MI stands for a myocardial infarction
AND ANSWERS 2026 PRACTICE SOLUTION
VERIFIED RESULTS
◉ which blood vessel leaves the heart and carries to all parts of the
body?
Answer: Aorta
◉ when measuring the height of peaks in an EKG what number does
each large square represent?
Answer: 5 millimeters by 5 millimeters
◉ each small square in an EKG is?
Answer: 0.04 seconds
◉ how can you calculate each heart rate of an EKG rate?
Answer: 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?
Answer: they are pumping the blood out of the chamber by
contraction
,◉ what is the membrane inclosing the heart?
Answer: it is the pericardial sac
◉ what are the pericardial leads?
Answer: they are chest leads
◉ normal standard is?
Answer: 10 millimeters
◉ what are leads?
Answer: they are the colored wires that are put on a patients limbs
◉ what is AVL ?
Answer: AVL is the difference in the hearts voltage
◉ what is AVF?
Answer: 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?
, Answer: 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?
Answer: it is changes in breathing
◉ what does the term systole mean?
Answer: flatline (death)
◉ what is a heart murmur?
Answer: a heart murmur is the sound of a faulty action when the
valves close
◉ what is ischemia
Answer: it is death to an area of the heart
◉ when someone feels pain in the heart its because?
Answer: when someone feels pain in the heart it is because
inadequate blood flow to the heart muscle
◉ what does MI stand for?
Answer: MI stands for a myocardial infarction
