Save
Upgrade to remove ads
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

EKG Quiz

TermDefinition
Electrocardiogram An ECG is a record of heart activity, or. composite of all action potentials generates and contractile cells at a given time.
Distinguishable waves P, QRS, and T wave
P wave Lasts for about 0.08 seconds and movement of depolarization wave from SA node through the atria.
QRS complex After 0.1 seconds, the atria contracts, and results from ventricular depolarization and precedes ventricular contraction. It has a complicated shape bc. the path of dp waves thru ventricular walls change and time depends on size, avg = 0.08
T-wave Ventricular re-polarization and lasts about 0.16 seconds, re-polarization is slower than depolarization so it is more spread out and has a lower amplitude than the QRS complex, occurs via slow cell-to-cell conduction rather than the fast Purkinje system
P-R interval About 0.16 seconds from the beginning of atrial excitation to the beginning of ventricular excitation, if Q wave is visible, often not, but it is sometimes called P-Q.
S-T interval When action potentials of ventricular myocytes are in their plateau phases and the ventricular myocardium is depolarized . Indicates the pause between depolarization and repolarization.
Q-T interval Around 38 seconds, ventricular depolarization -> re-polarization.
Tachycardia Heart rate over 100, due to exercise, stress, damage, or fever
Bradycardia Below 60, due to low body temp., heart is efficient (seen in athletes)
Arrhythmia Not in rhythm, abnormal, misshaped, and/or missing QRS.
Fibrillation Shaking, ventricle fibrillation is BAD
Flutter Above 200
Cardiac output Volume of blood pumped by each ventricle in on minute, CO = heart rate x stroke volume, but convert ml to liters using dimensional analysis
Medulla oblongata brain stem
Vagus nerve brain into heart to lungs to intestine
Sympathetic Increase heart rate
Parasympathetic decreases heart rate
hormones Thyroid hormones, epinephrine/adrenaline
Age Baby = faster heart, tiny heart, Older individuals can either have a higher risk of damage or heart rate can decrease if metabolism speeds up and heart rate decrease
Exercise Raises heart rate, but slows down long term
Body temp In cooler temperatures, heart rate slows down.
Created by: nuhaSalim
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards