Save
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

WVSOM -- Physio

Determinants of Cardiac Output

QuestionAnswer
Cardiac Output volume of blood pumped by each ventricle per minute
Stroke Volume Volume of blood ejected per beat
Heart Rate Number of heart beats/minute
Cardiac Output Equation CO = HR x SV
Stroke Volume Equation SV = EDV - ESV
Schematic for the SV component of the Equation Preload (Starling Effect) Contractility Afterload Compliance
Ejection Fraction EF = (SV)/(EDV)
Inotropy contractility
Starlings Law As volume increases, length increases and the greater the contraction
Compliance Equation (delta)V/(delta)P
Increasing Preload causes Increasing EDP Increasing EDV Increases SV and CO
Decreased HR causes less time for filling and results in a lesser force
Afterload force it has to overcome (arterial pressure)
Increasing Afterload Increases pre-ejection pressure Increases ESV Decreases SV and CO
Increasing contractility Decreases ESV Increases SV
Lowering Compliance decreased EDV Decreases SV and CO
length affects tension and velocity
Ejection Fraction in normal health 55%
What is the only way to change the slope of the left ventricular pressure change contractility
What affects contractility? (3) Positive inotropic effects
Postive inotropes caused by open Ca channels inhibition of the Na/Ca exchanger Inhibit plasma membrane pump Activations of B1 receptors
what cardiac drug induces positive inotropic effects? Cardiac glycosides (digitalis)
Negative inotropes Ca channel blockers Low Ca High extracellular Na
Determinants of O2 demand on the heart afterload extent of muscle shortening heart rate inotropic state heart size
60-90% of cardiac ATP derived from ________ free fatty acids
Calculating CO using the Fick Principle: "oxygen is the indicator"
Cardiac Output equation using Fick Principle CO = O2 consumption / (O2 pulmonary vein - )2 pulmonary artery)
Created by: tjamrose
Popular Physiology sets

 

 



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