ADN 520 Perfusion Exam Questions and Answers Graded A+
Medication to increase heart rate - Answers atropine
What is normal heart rate - Answers 60-100 bpm
Unstable angina - Answers chest pain that is not predicted, can happen at rest and doesn't go
away with rest
Stable angina - Answers Can be predicted with exertion, goes away with rest
What causes variant angina - Answers Spasm of blood vessels
What does nitroglycerin do? - Answers dilates blood vessels, opens up blood flow
What is it called when negative charge goes to positive charge? - Answers Depolarization
What is it called when positive charge goes to negative charge? - Answers Repolorization
What is the heart doing during depolarization? - Answers Contracting the heart has received a
signal
What is the heart doing during repolarization? - Answers relaxing/preparing for another
contraction
Where does the electrical signal start? - Answers SA node
How much time is one box on an EKG? - Answers 0.4 seconds
How much time is between tick marks on an EKG? - Answers 3 seconds
What does the P wave represent? - Answers atrial depolarization
the atria receives the signa; and atria contracts
What does the p wave look like? - Answers Small positive bump, before the QRS complex
What is the PR interval? - Answers This is the interval from the beginning of the P wave to
beginning of the QRS complex.
What does the PR interval represent? - Answers time between atrial depolarization and
ventricular depolarization.
What does the PR interval allow? - Answers This allows the heart to full contract aka "atrial kick"
How long should the PR interval be? - Answers 0.12-0.20 seconds or 3-5 boxes
What is the QRS complex? - Answers ventricular depolarization OR contraction of ventricles
, What does the QRS look like? - Answers Largest point in EKG
Where does the blood go from the QRS complex? - Answers Out to the body, is the largest point
because it's the biggest kick.
How long is the QRS complex? - Answers less than 0.12 seconds or 3 boxes
What is the ST segment? - Answers end of ventricular depolarization to start of ventricular
repolarization
What is the purpose of ST segment? - Answers Prepare the heart to repolorize again.
What does the ST segment look like? - Answers ISO - metric line meaning no electrical activity
What is the T wave? - Answers ventricular repolarization, relaxation of vessels
What is the purpose of T wave? - Answers Prepares the heart to contract and pump again.
What does the T wave look like? - Answers Positive wave at the end of QRS complex
Duration of T wave? - Answers 0.1-0.25 or greater seconds
What is the QT interval? - Answers beginning of QRS complex to end of T wave
time it takes for ventricles to fully pump
Duration of QT interval? - Answers 0.36-0.44 seconds
How do you measure rate on EKG? - Answers Count the number of QRS complex then multiple
by 10
How do you determine if rhythm is regular or irregular on EKG? - Answers The R wave has the
same distance between each other throughout the whole minute.
(Think protractor example)
What to look for when looking for a p wave on EKG - Answers Is there a p wave present before
all QRS and do they all look the same?
What is aystole? - Answers no electrical signals from heart
What does aystole look like? - Answers Flat line
What is sinus bradycardia? - Answers heart rate less than 60 bpm, everything else is normal
What is sinus tachycardia? - Answers Heart rate is greater than 100bpm, everything else is
normal
Heart isn't fully filling in between beats
Medication to increase heart rate - Answers atropine
What is normal heart rate - Answers 60-100 bpm
Unstable angina - Answers chest pain that is not predicted, can happen at rest and doesn't go
away with rest
Stable angina - Answers Can be predicted with exertion, goes away with rest
What causes variant angina - Answers Spasm of blood vessels
What does nitroglycerin do? - Answers dilates blood vessels, opens up blood flow
What is it called when negative charge goes to positive charge? - Answers Depolarization
What is it called when positive charge goes to negative charge? - Answers Repolorization
What is the heart doing during depolarization? - Answers Contracting the heart has received a
signal
What is the heart doing during repolarization? - Answers relaxing/preparing for another
contraction
Where does the electrical signal start? - Answers SA node
How much time is one box on an EKG? - Answers 0.4 seconds
How much time is between tick marks on an EKG? - Answers 3 seconds
What does the P wave represent? - Answers atrial depolarization
the atria receives the signa; and atria contracts
What does the p wave look like? - Answers Small positive bump, before the QRS complex
What is the PR interval? - Answers This is the interval from the beginning of the P wave to
beginning of the QRS complex.
What does the PR interval represent? - Answers time between atrial depolarization and
ventricular depolarization.
What does the PR interval allow? - Answers This allows the heart to full contract aka "atrial kick"
How long should the PR interval be? - Answers 0.12-0.20 seconds or 3-5 boxes
What is the QRS complex? - Answers ventricular depolarization OR contraction of ventricles
, What does the QRS look like? - Answers Largest point in EKG
Where does the blood go from the QRS complex? - Answers Out to the body, is the largest point
because it's the biggest kick.
How long is the QRS complex? - Answers less than 0.12 seconds or 3 boxes
What is the ST segment? - Answers end of ventricular depolarization to start of ventricular
repolarization
What is the purpose of ST segment? - Answers Prepare the heart to repolorize again.
What does the ST segment look like? - Answers ISO - metric line meaning no electrical activity
What is the T wave? - Answers ventricular repolarization, relaxation of vessels
What is the purpose of T wave? - Answers Prepares the heart to contract and pump again.
What does the T wave look like? - Answers Positive wave at the end of QRS complex
Duration of T wave? - Answers 0.1-0.25 or greater seconds
What is the QT interval? - Answers beginning of QRS complex to end of T wave
time it takes for ventricles to fully pump
Duration of QT interval? - Answers 0.36-0.44 seconds
How do you measure rate on EKG? - Answers Count the number of QRS complex then multiple
by 10
How do you determine if rhythm is regular or irregular on EKG? - Answers The R wave has the
same distance between each other throughout the whole minute.
(Think protractor example)
What to look for when looking for a p wave on EKG - Answers Is there a p wave present before
all QRS and do they all look the same?
What is aystole? - Answers no electrical signals from heart
What does aystole look like? - Answers Flat line
What is sinus bradycardia? - Answers heart rate less than 60 bpm, everything else is normal
What is sinus tachycardia? - Answers Heart rate is greater than 100bpm, everything else is
normal
Heart isn't fully filling in between beats
