Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
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

SPC Adv Modalities

SPC Adv Modalities Unit 1

Scalars or variables used in vent graphics? Pressure, flow, & volume graphed over time
Pressure is measured in? cmH2O
Time is measured in? seconds or minutes
Flow is measured in? L/m
Volume is measured in? mL or Liters
Where will you find the Ordinate & the Abscissa? Y axis & X axis
When is the rate of change the greatest? Beginning of the event
When is the rate of change the smallest? End of the event
Time constants are influenced by: Changes in vent settings (flow, pressure, Vt), total rate, compliance, & resistance
Short time constant implies: A fast rate of change
Long time constant implies: A slow rate of change
Benefits of short I-time: Allows for longer E-time, reduces risk or occurrence of auto-PEEP, promotes venous return
Disadvantages of short I-time: Promotes greater flow turbulence, reduces alveolar ventilation, promotes higher peak airway pressures
Benefits of short E-time: None
Disadvantages of short E-time: May reduce venous return & cardiac output, drop BP, promotes Auto-PEEP
Benefits of long I-time: Can improve PaO2, diffusion time is extended
Disadvantages of long I-time: Shortens E-time = can reduce venous return, may compromise cardiac output, patient can't exhale sooner
Benefits of long E-time: Promotes venous return, reduces Auto-PEEP
Disadvantages of long E-time: Odd breathing pattern - pt may want to take a breath sooner but can't
Factors that influence waveforms: Compliance, resistance, flowrate, rate (bpm)
Problems associated w/ reduced compliance: Atelectasis - collapsed alveoli, Lung collapse - pneumothorax
Causes for loss of lung compliance: ARDS, atelectasis, pneumo, fibrosis, pneumonia, P.E., mainstem intubation, pleural effusion, gastric distension, ascites
Iatrogenic causes of compliance loss: High PEEP/CPAP settings, high Vt, high pressure, high FiO2 resulting in nitrogen washout
Acute causes of resistance: airway secretions, bronchospasm, biting E/T tube, kinked E/T tube, aspiration of foreign body (usually during trauma)
Chronic causes of resistance: Airway edema, mucus migration into E/T tube, plugged filters, overly wet HME's
Benefits of low flow rates: Lower airway pressures, improved gas distribution, long I-time = improved oxygenation
Possible problems with low flow rates: Extended I-time = smaller E-time = possible auto-peep and reduced venous return
Created by: vgflgirl
Popular Respiratory Therapy sets




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:
restart all cards